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Schempp-Hirth Ventus–3M Performance Preliminary Flight Manual

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SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Variant:
Edition:
Serial-No.:
Registr. No.:
Date of issue:
„Type Certificate EASA.A.627" vom 00. Monat 0000.
This powered sailplane is to be operated in compliance with information and limitations
contained herein.
Approval of translation has been done by best knowledge and judgement. In any case the
original text in German language is authorative.
P r e l i m i n a r y
F L I G H T M A N U A L
for Powered Sailplane
V e n t u s – 3 M
P e r f o r m a n c e
0 5 3 M P
O H – 1 0 3 1
Pages as indicated by „appr." Are EASA approved by
M a r c h
2 0 1 9

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  • Page 1 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK P r e l i m i n a r y F L I G H T M A N U A L for Powered Sailplane V e n t u s – 3 M Variant:...
  • Page 2 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Record of revisions Any revision of the present manual, except actual weighing data, must be recorded in the following table. The new or amended text in the revised page will be indicated by a black vertical line in the left-hand margin.
  • Page 3 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Erfassung der Berichtigungen/Records of revisions Bezug Reference ÄB / MB: Änderungsblatt – Modification Bulletin TM / TN: Technische Mitteilung – Technical Note Hinweis: Nicht eingefügte Berichtigungen sind zu streichen. Das Verzeichnis der Seiten ist gegebenenfalls handschriftlich zu aktualisieren.
  • Page 4 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 0.1.1 März 2019 0.1.2 0.2.1 0.2.2 0.2.3 0.2.4 0.2.5 0.2.6 0.2.7 0.2.8 0.2.9 0.2.10 0.2.11...
  • Page 5 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference März 2019 1.1.1 März 2019 1.2.1 März 2019 1.3.1 März 2019 1.4.1.1 März 2019 1.4.1.2...
  • Page 6 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference März 2019 2.1.1 März 2019 CS 22 2.2.1 März 2019 CS 22 2.2.2 März 2019 CS 22 2.3.1...
  • Page 7 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference März 2019 3.1.1 März 2019 CS 22 3.2.1 März 2019 CS 22 3.3.1 März 2019 CS 22 3.4.1...
  • Page 8 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference März 2019 4.1.1 März 2019 CS 22 4.2.1.1 März 2019 CS 22 4.2.1.2 März 2019 CS 22 4.2.1.3...
  • Page 9 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference CS 22 4.5.4.1 März 2019 CS 22 4.5.4.2 März 2019 CS 22 4.5.5.1 März 2019 CS 22 4.5.6.1...
  • Page 10 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference März 2019 5.1.1 März 2019 CS 22 5.2.1 März 2019 CS 22 5.2.2 März 2019 CS 22 5.2.3...
  • Page 11 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference März 2019 6.1.1 März 2019 6.2.1 März 2019 6.2.2 März 2019 6.2.3 März 2019 6.2.4...
  • Page 12 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference März 2019 7.1.1 März 2019 7.2.1 März 2019 7.2.2 März 2019 7.2.3 März 2019 7.2.4...
  • Page 13 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 7.3.28 März 2019 7.3.29 März 2019 7.3.30 März 2019 7.3.31 März 2019 7.3.32 März 2019 7.3.33...
  • Page 14 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 7.4.1 März 2019 7.5.1 März 2019 7.6.1 März 2019 7.7.1 März 2019 7.8.1 März 2019 7.9.1...
  • Page 15 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH/FLIGHT MANUAL Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference März 2019 9.1.1 März 2019 9.2.1 März 2019 ÄB / MB: Änderungsblatt – Modification Bulletin TM / TN: Technische Mitteilung –...

  • Page 16: Table Of Contents

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Table of contents Section General Limitations Emergency procedures Normal operating procedures Performance Weight / balance Aircraft and systems description Aircraft handling, care and maintenance Supplements March 2019 Revision – 0.3.1...

  • Page 17: General

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 1 General Introduction Certification basis Warnings, cautions and notes Description and technical data Three side view March 2019 Revision –...
  • Page 18 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL General Introduction This Flight Manual has been prepared to provide pilots and instructors with all necessary information for the safe and efficient operation of the powered sailplane. This manual includes at first all the material that needs to be provided to the pilot according to EASA airworthiness code „CS 22”.
  • Page 19 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Certification basis This self-launching powered sailplane, model designation V e n t u s - 3 M has been approved by the European Aviation Safety Agency (EASA) in compliance with the airowrthiness requirements contained in CS-22 vom 05.
  • Page 20 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Warnings, cautions and notes Particularly important statements in this manual regarding flight safety or important matters for operation are preceded by one of the following terms „WARNING“ means that the non-observation of the indicated procedure leads to an immediate or important degradation of the flight safety.
  • Page 21 Wing The six-piece wing with winglets is four-stage trapezoid in planform with triple- panel “Schempp-Hirth” type airbrakes on the upper surface. The flaps are full-span and act at the same time as ailerons. The water ballast tanks are integral compartments in the forward section of the wing.
  • Page 22 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Vertical Tail Fin and rudder are constructed as a GFRP/foam-sandwich. Optionally a water ballast trim tank with a capacity of 7.8 liter (2.06 US Gal., 1.72 IMP. Gal.) can be integrated in the fin.
  • Page 23 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Power plant The Ventus-3M was developed from the self-sustaining powered sailplane Ventus- 3T by integrating a stronger propulsion system, a larger propeller and the use of a suitably adapted fuselage. The Ventus-3M is powered by a liquid-cooled 45 kW (61 PS) SOLO engine – type 2625-01i –...
  • Page 24 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 1.4.2 Technical Data Wing Span 18.00 m 59,06 ft Area 10.84 m² 116,68 ft Aspect ratio 29.90 0.602 m 1,975 ft Fuselage Length 6.78 m 22,24 ft Width 0.62 m 2,03 ft Height 0.81 m...
  • Page 25 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Three-side View March 2019 Revision – 1.5.1...

  • Page 26: Limitations

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 2 Limitations Introduction Airspeed Airspeed indicator markings Power plant, fuel and oil Power plant instrument markings Weights (masses) Center of gravity Approved maneuvers Maneuvering load factors 2.10 Flight crew 2.11 Kinds of operation 2.12...
  • Page 27 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Limitations Introduction This section includes operating limitations, instrument markings and basic placards necessary for safely operating the aircraft, its standard systems and its standard equipment. The limitations included in this section and in section 9 have been approved by the EASA.
  • Page 28 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Airspeed Airspeed limitations and their operational significance are shown below: Abbr. SPEED REMARKS Do not exceed this speed in Never exceed speed in 280 km/h any operation and do not use calm air for flap settings “0”,...
  • Page 29 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Abbr. SPEED REMARKS 180 km/h Maximum speed for Do not exceed this speed 97 kt aerotow during an aerotow 112 mph 150 km/h Maximum speed for winch Do not exceed this speed...
  • Page 30 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Airspeed indicator markings Airspeed indicator markings and their colour code significance are shown below: MARKING SIGNIFICANCE 280 km/h Red line at 151 kt Maximum permitted speed 174 mph 180 – 280 km/h...
  • Page 31 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Power plant, fuel and oil Engine manufacturer: SOLO-Kleinmotoren GmbH. 71050 Sindelfingen Engine model: SOLO 2625-01i Engine power (MSL, ISA): Take-off power: 45 KW (61 PS) at 6200 RPM max. continuous power: 45 KW (61 PS) –1...
  • Page 32 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Fuel capacity: SN 31 and on after manufacture Tanks in inboard wing panels Total capacity Tank in incl. optional Ventus-3M fuselage left right (Option) (Option) tanks SN 31 and on Liter Liter...
  • Page 33 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Power plant instrument markings The following table describes the indications and the range limits of the power plant instrument and the meaning of the used color markings: Power plant Maximum Prompt Normal range...
  • Page 34 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Weights (masses) Wingspan: 18 m 600 kg Maximum permitted take-off mass: 1323 lb 600 kg Maximum permitted landing mass: 1323 lb Maximum permitted take-off and landing mass without water ballast: 545 kg...
  • Page 35 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Center of gravity in flight Aircraft attitude: Tail jacked up such that the upper edge of a 100 : 4.4 wedge is horizontal when placed on top of the tail cone Datum plane:...
  • Page 36 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Approved maneuvers The powered sailplane is certified in category Utility, self-launching Warning: Aerobatic maneuvers are NOT approved! March 2019 CS 22 Revision – 2.8.1...
  • Page 37 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Maneuvering load factors The following maneuvering load factors must not be exceeded: With airbrakes retracted at V = 180 km/h, 97 kt, 112 mph n = + 5.3 g n = - 2.65 g...
  • Page 38 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 2.10 Flight crew The powered sailplane is single-seated. Observe the minimum seat load. In case the minimum seat load can´t be achieved, ballast must be installed to compensate this to a permissible configuration. See also section 6.2.2 “Weight and Balance Record / Permitted Payload Range”.
  • Page 39 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 2.11 Kinds of operation This powered sailplane is approved for VFR-flying in daytime cloud flying up to a maximum mass of 490 kg (1080 lb) with the prescribed minimum equipment installed (see page 2.12).
  • Page 40 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 2.12 Minimum equipment Instruments and other parts of the prescribed minimum equipment must be of an approved type and should be selected from the list in section 7 of the Ventus-3M Maintenance Manual.
  • Page 41 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Cloud flying In addition to the minimum equipment listed under normal operations the following is required: 1x Turn and bank indicator with slip ball 1x Variometer 1x VHF-Transceiver Recommended additional equipment for cloud flying:...
  • Page 42 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 2.13 Aerotow and winch launch Aerotow Maximum towing speed: 180 km/h (97 kt, 112 mph) Weak link in tow rope: max. 660 daN (max. 1484 lb) Minimum length of tow rope: 30 m...
  • Page 43 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 2.14 Other limitations Waterballast system Below +2°C (36°F) outside temperature no water ballast may be used. Life time of the airframe The maximum life time of the powered sailplane is 12000 hours.
  • Page 44 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 2.15 Limitation placards *) possible discrepancies from this, see page 6.2.2 and 6.2.3, must be registered. Note: For further placards refer to the Maintenance Manual Ventus-3M. March 2019 CS 22 Revision –...

  • Page 45: Emergency Procedures

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 3 Emergency procedures Introduction Jettisoning the canopy Bailing out Stall recovery Spin recovery Spiral dive recovery Engine failure (carburettor freezing) Engine fire Other emergencies March 2019 Revision –...
  • Page 46 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Emergency procedures Introduction This section provides check lists and recommended procedures for dealing with emergencies that may occur. Emergency situations can be minimized by proper pre-flight inspections and regular maintenance. March 2019 Revision –...
  • Page 47 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Jettisoning the canopy o Stop and retract power plant, if possible. o Swing back both red levers (on right and left side of canopy frame) to their stops (more than 90°). o Lift the canopy as forward as possible with both red levers (the canopy is held in its place at its rear end by the Röger-Hook).
  • Page 48 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Bailing out o Stop and retract power plant, if possible o After jettisoning the canopy – see page 3.2.1 – bailing out is done as follows: o Actuate release buckle of restraint system.
  • Page 49 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Stall recovery Power plant retracted When stalling during straight flight or in a banked turn, normal flying attitude is regained by firmly easing the control stick forward and, if necessary, applying opposite rudder and aileron.
  • Page 50 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Spin recovery A safe recovery from a spin is performed as follows: Aileron in neutral position. Apply rudder against the direction of the spin rotation Ease control stick forward until rotation ceases and the airflow is restored Centralize rudder and pull gently out of dive.
  • Page 51 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Spiral dive recovery A spin - depending on c/g position, flap setting and use of controls - may turn into a spiral dive, which is indicated by a rapid increase in speed and acceleration.
  • Page 52 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Engine failure Engine failure on take-off Ease the control stick forward immediately to obtain sufficient airspeed. Ignition OFF. Should the engine fail on take-off from a runway with sufficient length, land straight ahead.
  • Page 53 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Engine failure in flight Should the engine fail in flight, check: Sufficient fuel quantity? Fuel shut-off valve OPEN? Circuit breaker “Fuel pump“ CLOSED? Circuit breaker “Power plant system” CLOSED? Should it be impossible to restart the engine, continue the flight with retracted power plant.
  • Page 54 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Extending / Retracting power plant in spite of a defective power plant operating unit Emergency system for lifting spindle drive (see also page 7.3.40) If the power plant control system fails, it is still possible to extend and retract the power plant with a separate emergency system.
  • Page 55 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Stopping and retracting the engine with the emergency system - Ignition OFF - Close red switching cover. - Operation note      on the power plant operating unit has to be confirmed with the MENU- button to switch of the warning.
  • Page 56 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Failure of engine control system If a failure of the engine control system (Trijekt) will occur during operation, the engine will stop and the respective error message with further details will be shown on and stored in the power plant operation unit.
  • Page 57 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 2. Failure of engine battery: If a failure of the engine battery occurs, this failure will be detected by the Power Supply Switch and the electrical power supply of the power plant system will be ensured via the generator.
  • Page 58 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Starting the engine when the on-board battery is empty By using a powerful LiFePo engine battery, very high currents would flow when this battery is started by a third party due to the low internal resistance, which could damage the battery itself or the wiring in the aircraft.
  • Page 59 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Engine Fire In the event of an engine fire, the following steps must be carried out: o CLOSE fuel shut-off valve o Open throttle fully o When the engine is stopped: Master switch OFF...
  • Page 60 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Other Emergencies Flight with uneven water ballast If, while flying or dumping water ballast, the weight distribution should become asymmetrical (for example due to leaks in the water tanks or a single blocked dumping valve), this can be noticed by having to deflect the ailerons for flying straight.
  • Page 61 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Emergency landing with retracted undercarriage An emergency landing with the main wheel retracted is on principle not recommended, because the potential energy absorption of the landing gear is many times higher as compared to the fuselage shell.

  • Page 62: Normal Operating Procedures

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 4 Normal operating procedures Introduction Assembly 4.2.1 Rigging 4.2.2 Derigging 4.2.3 Refueling / Manual input of the amount of fuel filled up 4.2.4 Draining the fuel tanks Inspections 4.3.1 Daily inspection...
  • Page 63 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Normal operating procedures Introduction This section provides checklists and amplified procedures for conducting the daily and pre-flight inspection. Furthermore, this section includes normal operating procedures recommended speeds. Normal procedures associated with optional equipment are found in section 9.
  • Page 64 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Assembly 4.2.1 Rigging The Ventus-3M can be rigged by two people if a wing stand or trestle is used under one wing tip. Prior to rigging, all pins and their corresponding bearings on fuselage, wing panels and tailplane should be cleaned and greased.
  • Page 65 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL o As soon as both stub pins have engaged in their bearings (this can be detected by a short extension of the unlocked airbrakes), force wing panel in its position under vigorous pressure.
  • Page 66 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Horizontal tailplane o Screw the round-headed rigging tool into the front locating pin of the tailplane on the leading edge of the fin. o Slide the horizontal tailplane aft onto the two elevator actuating pins, pull ringing tool und its pin forward, seat stabilizer nose.
  • Page 67 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.2.2 Derigging Derigging can be done by two people if a wing stand or trestle is used under one wing tip. Before derigging remove the total energy probe and, if installed, the pitot extension, from the tail fin.
  • Page 68 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.2.3 Refueling / Manual input of the amount of fuel filled up Internal refueling system The quick disconnect coupling of the refueling system is located in the engine compartment at the top of the front bulkhead on the left-hand side.
  • Page 69 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Refueling the fuselage tank with the internal refueling system The fuselage tank can only be refueled via the internal refueling system. In order to refuel the fuselage tank, attach the external fuel hose to the quick disconnect coupling in the engine compartment, see picture on page 7.11.3.
  • Page 70 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Refueling of (optional) wing tank(s) One or two flexible wing fuel tanks are optionally available. The wing fuel tanks are connected to the fuselage fuel system with one fuel line and one vent line each. Both lines are equipped with quick-disconnect couplings, which must be connected manually when rigging the wings.
  • Page 71 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Refueling of (optional) wing tank(s) Caution: Due to the simple fuel system it is not possible to achieve a symmetrical fuel distribution between both wing fuel tanks during the refuelling process with only partial filling of the wing fuel tanks.
  • Page 72 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Determination of the fuel content Fuselage tank The fuel content in the fuselage tank (max. 13 litres/3.43 gallons) is measured by a capacitive sensor integrated in the fuselage tank and displayed in whole liters in the power plant operating unit.
  • Page 73 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Input of the fuel content in the wing fuel tank(s) into the power plant operating unit A manual input of the fuel quantity is only necessary when using optional wing tank(s). The prerequisite for the entry is a displayed fuel quantity of at least 6 liter in the fuselage fuel tank (reserve quantity).
  • Page 74 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Calibration of the fuel quantity indicator for the fuselage fuel tank If the fuel grade is changed, e.g. from Avgas to Mogas, or if there is any other suspicion of an inaccurate indication of the fuel content in the fuselage tank, the fuel indication must be recalibrated in the operating unit.
  • Page 75 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Draining the fuel tanks Fuselage fuel tank The fuselage fuel tank can be drained via the drain valve. The drain valve is located on the left underside of the fuselage behind the landing gear compartment.
  • Page 76 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Inspections 4.3.1 Daily inspection The importance of inspecting the aircraft after rigging or before commencing the day’s flying cannot be over-emphasized, as accidents often occur when these daily inspections are neglected or carried out carelessly.
  • Page 77 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL o Check for foreign objects. o Check fuel quantity. o Check fuel line(s) and tank vent line(s) for proper connection. o Check main wheel tire pressure (4.0 bar/8.8 PSI). o Check tow release mechanism(s) for proper condition and function.
  • Page 78 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL o Check fuselage for damage, especially on its lower side. o Check the STATIC pressure ports for the airspeed indicator at the rear fuselage tube (0.8 m in front of the fin) for cleanliness.
  • Page 79 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Check cooling water hose for possible damage and firm attachment at the plug-in connections. o Check level of coolant liquid. Ensure tight closure of pressure cap. Check function of the water pump with ignition "ON".
  • Page 80 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL o Check condition of tail wheel: steerable tail wheel: 3,0 bar (43 PSI) Fixed tail wheel: 2,5 bar (36 PSI) o Mount the TEK probe, if present, and check TEK-line. When blowing from the front onto the probe, the connected variometers must indicate climbing.
  • Page 81 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL o Check the correct installation of the battery in the fin according to the loading chart. o Check the horizontal tailplane for correct installation. o Check elevator and rudder for free movement.
  • Page 82 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Pre-flight check March 2019 CS 22 Revision – 4.4.1...
  • Page 83 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Normal operating procedures and recommended speeds 4.5.1 Methods of launching Aerotow Maximum permitted towing speed: = 180 km/h (97 kt, 112 mph) Warning: Only permitted using nose tow hook and with power plant fully retracted! Hemp and nylon ropes of between 30 and 50 m (98-164 ft) length were tested.
  • Page 84 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL For rearward c/g positions and low all-up masses the powered sailplane is lifted off with flaps set at "+2". In the case of forward c/g positions or high all-up masses a setting of “L” may be used to shorten the ground roll distance.
  • Page 85 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Winch launch Maximum towing speed = 150 km/h (81 kt, 93 mph) WARNING: Winch launch is only permissible at the installed c/g tow release and with retracted power plant. Prior to take-off – with flaps to be at setting "+2" – set the elevator trim as...
  • Page 86 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Warning: It is explicitly advised to avoid winch launching with a tail wind! Caution: Winch launching at the maximum permitted all-up mass should only be done if an appropriately powerful winch and a cable in perfect condition are available.
  • Page 87 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.2 Self-launch / Starting the engine, runup, taxiing and engine shut-down on the ground a) Starting the engine on the ground: o Apply wheel brake o Start the engine according to following check list:...
  • Page 88 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.2 Self-launch / Starting the engine, runup, taxiing and engine shut-down on the ground (cont.) c) Taxiing Rolling without wingtip wheels can only be carried out with a helper at the tip of the wing.
  • Page 89 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.2 Self-launch / Starting the engine, runup, taxiing and engine shut-down on the ground (cont.) f) Take-off and Climb Perform take-off check before start, see pages 4.4.1 and 5.2.3 (Start distances). The take-off is carried out with the wing held horizontally by a helper or with the wing down with the wingtip wheel.
  • Page 90 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.2 Self-launch / Starting the engine, runup, taxiing and engine shut-down on the ground (cont.) f) Take-off and climb (cont.) Caution: If, at high ambient temperatures, the coolant temperature rises too high, the cause may also be the anti-freeze proportion being too much for such temperatures.
  • Page 91 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.3 Cruise / Cross Country Flight (power plant retracted) The aircraft has pleasant flight characteristics and can be flown effortlessly at all speeds, loading conditions (with or without water ballast), configurations, and c/g positions.
  • Page 92 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL High Speed Flying (power plant retracted) When flying at high speeds, particular attention must be paid to the maximum speed limits associated with the various flap settings. These speeds are clearly visible marked on the air speed indicator (ASI) in different colors.
  • Page 93 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Warning: Extending the airbrakes high speeds: Check in advance that the safety harnesses are tight and make sure that the control stick is not inadvertently jarred forward when the airbrakes are extended.
  • Page 94 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Use of the wing flaps The camber-changing flaps alter the wing section such that the laminar bucket is always well suited to the actual flying speed. For smooth thermals flap setting "+2" is recommended. In turbulent thermals, which require a quick aileron response, flap setting "+1"...
  • Page 95 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Low speed flight and stall behaviour In order to become familiar with the aircraft it is recommended to explore its stall behaviour at a safe height. This should be done using the various flap settings while flying straight ahead and also in banked turns (30°...
  • Page 96 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Turning flight stalls When stalled during a coordinated 45° banked turn and with the c/g at an aft position, the aircraft rolls slightly into the turn and, when easing the stick forward, slightly drops its nose and a normal flying attitude is regained by applying opposite rudder and aileron.
  • Page 97 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.4 Flight/Cross Country Flight (power plant extended) For flight performance with extended powerplant please refer to page 5.3.2.1. Maximum climb rate is achieved with flaps in „L“ position and between 98 and 100 km/h (53-54 kts, 61-62 mph).
  • Page 98 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Low speed flight and stalling behaviour (power plant extended) There are no significant differences in stalling from straight flight to stalling from turning flight to the stalling behaviour with the power plant retracted. Stall speeds - see page 5.2.2.
  • Page 99 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.5 Extending the power plant, starting the engine in flight With the powerplant extended and engine off, the rate of descent is approx. 2.30 m/s (450 fpm) at a speed of 105 km/h (57 kt, 65 mph), resulting in a glide ratio of only about 13 : 1 –...
  • Page 100 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.6 Stopping Engine and Retracting Powerplant See also the following checklist: a) Procedure for stopping and retracting the power plant in automatic mode (normal operation) o Carry out the cooling run with approx. 20% of power until the indicated cooling water temperature has dropped to below 60°C.
  • Page 101 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL b) Procedure for stopping and retracting the power plant in manual mode or with insufficient effect of the electric propeller brake in automatic mode o Carry out the cooling run with approx. 20% of power until the indicated cooling water temperature has dropped below 60°C.
  • Page 102 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Caution: Observe the propeller when retracting in the rear-view mirror. If the propeller should turn out of the retraction position during automatic retraction of the power plant, the automatic retraction process is interrupted and the power plant control system switches to manual mode.
  • Page 103 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.7 Approach Power plant retracted / power plant removed Normal approach speed with airbrakes fully extended, flap position L and wheel down is 105 km/h (56 kts, 65 mph), or 115 km/h (62 kts, 71 mph) at maximum permitted all-up mass.
  • Page 104 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Caution: 1. In 18 m configuration and rudder displaced more than 80% of its travel, a straight flight path cannot be maintained and the aircraft will turn in the direction of the displaced rudder. Since the airbrakes are very effective and because of this behaviour, side slipping is not recommended.
  • Page 105 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Power plant extended (only permitted with ignition OFF and in case of an emergency) Landings with the powerplant extended (ignition OFF) can be done in the same manner as landings with the retracted power plant.
  • Page 106 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.8 Landing Power plant retracted / power plant removed For off field landing the undercarriage should always be extended as the protection of the pilot is much better, especially from vertical impacts on landing.
  • Page 107 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.9 Flight with Water Ballast Water ballast is necessary to reach the maximum all-up mass. Wing ballast tanks The water tanks are integral compartments in the nose section of the wing panels.
  • Page 108 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.9 Flight with water ballast (cont.) Filling the water tanks The tanks must be filled only in rigged condition and dumped prior to de-rigging. Warning: The water ballast load in the left and right wings must always be the same so that the lateral stability is not adversely affected.
  • Page 109 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.9 Flight with water ballast (cont.) Flying with water ballast Before starting with partly filled tanks, ensure that the wing is held level to allow the water to be equally distributed so that the wing panels are balanced.
  • Page 110 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.9 Flight with water ballast (cont.) Water ballast fin tank (optional) For optimum performance in circling flight, the forward travel of the center of gravity, caused by water ballast in the wing nose, may be compensated by carrying water ballast in the fin tank.
  • Page 111 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.9 Flight with water ballast (cont.) Water ballast is dumped from the fin tank through an opening on the lower side of the fuselage tail boom, in front of the rudder. The fin tank dump valve is...
  • Page 112 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.10 High altitude flight When flying at high altitude it should be noted that true airspeed (TAS) increases in relation to indicated airspeed (IAS). This difference does not affect the structural integrity or load factors, but to avoid...
  • Page 113 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.11 Flying at low temperatures When flying at temperatures below 0° C (32° F), as in wave or during the winter months, it is possible that the usual ease and smoothness of the control circuits is reduced.
  • Page 114 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.12 Flight in Rain When flying the aircraft with a wet surface or in rain, the size of the water drops adhering to the wing causes a deterioration of its flight performance which cannot be expressed in numerical values due to the difficulties involved with such measurements.
  • Page 115 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 4.5.13 Aerobatics Aerobatics are not permitted! March 2019 CS 22 Revision – 4.5.13...

  • Page 116: Performance

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 5 Performance Introduction Data (structured according to CS 22) 5.2.1 Airspeed indicator system errors 5.2.2 Stall speeds 5.2.3 Take-off distances 5.2.4 Additional information Data (not structured according to CS 22) 5.3.1 Demonstrated crosswind performance 5.3.2...
  • Page 117 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Performance Introduction This section provides approved data for airspeed calibration, stall speeds and additional information. The data in the charts has been computed from actual flight tests with a powered sailplane in good condition and using average piloting techniques.
  • Page 118 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Data (structured according to CS 22) 5.2.1 Airspeed indicator system errors Errors in the indicated airspeed (IAS) caused by the measurement of Pitot/Static pressure may be read from the following calibration chart. This chart is applicable to free flight.
  • Page 119 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 5.2.2 Stall speeds The following stall speeds (IAS) at various flap settings were determined in straight and level flight: Configuration Powerplant retracted Wingspan 18 m 600 kg 600 kg All-up mass (approx.)
  • Page 120 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 5.2.3 Take-off distances (at calm air) All figures shown below refer to ICAO standard atmosphere and are based on the maximum permitted all-up mass for self-launch of 600 kg (1322 lb). Ground run on paved runway (0 m MSL):...
  • Page 121 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 5.2.4 Additional information None. March 2019 CS 22 Revision – 5.2.4...
  • Page 122 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL DATA (not structured according to CS 22) 5.3.1 Demonstrated crosswind performance The maximum crosswind velocity, at which take-offs and landings have been demonstrated, is 20 km/h (11 kts ). March 2019 Revision –...
  • Page 123 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 5.3.2 Flight polar All values shown below refer to MSL (0 m) and 15° C (59° F). Powerplant retracted: Wingspan 18 m Performance at an all-up mass of 600 kg / 1322 lb ²...
  • Page 124 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Speed polar diagram not yet measured March 2019 Revision – 5.3.2.2...
  • Page 125 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 5.3.3 Range (without influence of wind) Values below refer to level flight at cruising power (continuous RPM): Crusing speed approx.: 160 km/h (86 kts, 99 mph) Fuel consumption approx.: 22.5 ltr/h (5.94 US Gal/h, 4.94 IMP Gal/h)
  • Page 126 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 5.3.3.2...
  • Page 127 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 5.3.4 Noise data The noise level limit according ICAO Appendix 16, Volume I, for the powered sailplane Ventus-3M (equipped with the SOLO engine 2625-01i) is 65.9 dB(A) < Noise level limit 70.8 dB(A) and is thus far below the noise level limit.

  • Page 128: Weight / Balance

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 6 Weight (mass) and balance Introduction Weight (mass) and balance record and permitted payload range 6.2.1 Seat load of less than the required minimum 6.2.2 Weight and balance log sheet (power plant installed) 6.2.3...
  • Page 129 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Weight (mass) and balance Introduction This section contains the payload range within this aircraft may be safely operated. Procedures for weighing the aircraft, the calculation method for establishing the permitted payload range and a comprehensive list of all equipment available are contained in the Ventus-3M Maintenance Manual.
  • Page 130 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Weight and balance record and permitted payload range The following loading chart, see sections 6.2.2 and 6.2.3, show, besides other data, the empty weight, the maximum and minimum Ioad on the seats and the maximum payload in the fuselage.
  • Page 131 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 6.2.2 Weight and balance log sheet) for S/N.: (power plant installed) Date of weighing: Empty mass [kg] (without usable fuel) Equipment list dated Quantity /Masst Quantity /Masst Quantity /Masst Quantity /Masst Installed batteries...
  • Page 132 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 6.2.3 Weight an balance log sheet for S/N.: (power plant removed) Date of weighing: Empty mass [kg] (without usable fuel) Equipment list dated Quantity /masst Quantity /masst Quantity /masst Quantity /masst Installed batteries...
  • Page 133 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 6.2.4 Wing water ballast load Maximum all-up weight incl. water ballast m 600 kg (1322 lb) C/G position of water ballast in wing tanks (aft of datum): Inner tank (inner wing): 194 mm (7.64 inch) Outer tank (outer wing): 214 mm (87.43 inch)
  • Page 134 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 6.2.5 Water ballast loading the fin (option) Warning: The fin ballast may only be used to compensate the top-heavy moment of the wing water tank! The determination of the ballast quantity carried in the fin tank (m ) is done with the aid of the diagram shown on the next page.
  • Page 135 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Table Water Ballast Overview Caution: Fill always full liters in the fin tank. At the discontinuity of the diagram (vertical axis, wing water ballast) the corresponding fin water ballast (Full liters) can be filled.
  • Page 136 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 7 Description of the aicraft and its systems Introduction Cockpit description Instrument panel Undercarriage Seat and restraint systems Static pressure and total pressure system Airbrake system Baggage compartment Water ballast system(s) 7.10...
  • Page 137 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Description of the aircraft and its systems Introduction This section provides a description of the aircraft including the operation of its systems. For details concerning optional and not standard systemy and equipment refer to section 9 “Supplements”.
  • Page 138 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Cockpit Description March 2019 Revision – 7.2.1...
  • Page 139 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL All instruments and controls are within easy reach of the pilot. Pivoting instrument panel The instrument panel is placed clearly visible in front of the pilot. When the canopy is opened, the instrument panel swings upwards. The instrument panel cover is attached to the canopy frame with screws.
  • Page 140 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Rudder pedal adjustment Black round knob, actuating the locking of the rudder pedal adjustment, is located on the right base of the instrument panel console. Adjustment of the rudder pedal on the ground and in the air is possible.
  • Page 141 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Canopy The one-piece plexiglass canopy can be opened to the front and is attached to the instrument panel support. Canopy locking Black levers with white markings on the right and left side of the canopy frame.
  • Page 142 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Water ballast dumping for wing tanks and optional fin tank Black knob in the middle of the cockpit inner skin on the right is guided in a crank. Opening and closing the valves of the wing tanks simultaneously with the optional fin tank.
  • Page 143 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Elevator trim Elevator trim on the left side of the cockpit. The spring-loaded trim is gradually adjustable by swinging the green knob inwards, sliding it to the desired position and let it engage outwards again. A normal position of the trim at flap setting “0”...
  • Page 144 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Harness The lap seatbelts are looped around bolts that are laminated to the seat pan, the shoulder seatbelts are looped around the front transverse tube of the fuselage steel frame. The belt system is closed and reopened via a central locking mechanism.
  • Page 145 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Manual propeller brake Black T-handle on the front of the left cockpit inner skin in front of the airbrake handle. Apply brake Pull handle Release brake Release handle With the powerplant control unit, manual operation of the propeller brake is only required if the automatic operation of the propeller brake via the brake servo is defective.
  • Page 146 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 7.3.1 Instrument Panel A description of the marked components I - VII can be found on the following pages. A description of the instruments is not included. March 2019 Revision – 7.3.1...
  • Page 147 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Ι Power plant operating Unit Description see page 7.3.5 ff Pneumatic valve Optional toggle switch in the instrument panel for changing the variometer display. tube to TE probe STATIC Static pressure tube to TE probe...
  • Page 148 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL IV Starter button on control stick The starter motor is operated in two different modes: 1) Starting the engine The following prerequisites must be met in order the starter motor can be used to start the engine: ...
  • Page 149 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Blinking fire warning light (red) The temperature gauge for the fire waring LED is mounted in the upper part of the front engine compartment wall. In the event of strong heat development in the engine compartment, e.g.
  • Page 150 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG Meaning TFT Display All messages Ignition switch with yellow cap Memory Card / SD Card Slot Data exchange / Updates Manual operation switch Rotary selector switch with push button March 2019 Revision –...
  • Page 151 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) The MCU3 power plant control system reduces the pilot's effort when operating the power plant. - For the pilot, the extension and retraction of the power plant is normally reduced to the operation of the ignition switch (automatic mode).
  • Page 152 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating Unit MCU3 BG (cont.) A) Device description: The switches for starting the power plant control are located in the fuse console in the lower fixed portion of the instrument panel (see section VII of this chapter, p. 7.3.50 ff).
  • Page 153 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) A) Device description (cont.) 1. TFT Display The individual displays of the three operating modes (gliding operation, power plant operation and travel operation) are described below. The exact treatment of the individual displays follows in the next chapter B) Functional description.
  • Page 154 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) A) Device description (cont.) Display during travel operation: Sensors for propeller- Power plant extended position (optional) (blinking during extension) Direction of power Warning plant movement...
  • Page 155 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) A) Device description (cont.) 2. Ignition switch Position UP: - Ignition ON The power plant extends completely (automatic mode) Electric fuel pump is switched on...
  • Page 156 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) A) Device description (cont.) 4. Manual operation switch (switch for spindle drive) If the pilot starts the extension or retraction process during flight with the ignition switch, there is no need to use the manual operation switch as long as there is no failure in the power plant control system.
  • Page 157 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) A) Device description (cont.) Transition from automatic mode to manual mode (interruption of the automatic extension and retraction process with the manual control switch): Is the manual operation switch pushed up or down while the power plant is extended or retracted with the ignition switch (i.e.
  • Page 158 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) A) Device description (cont.) 5. Rotary selector switch with push button The rotary selector switch with push button is used to: make Selections in the screen menu...
  • Page 159 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description Displays of the operating unit The displays of the control unit differ in the three operating modes gliding operation, Power plant operation and traversing operation.
  • Page 160 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description 1.5 Warning The orange warning symbol (5) appears as soon as an error has occurred or a limit value has been exceeded. The error is also indicated by an error message. This error message can be confirmed by pressing the rotary selector switch if the error does not prevent operation.
  • Page 161 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 2. Display during powerplant operation: (numeric & scale Power plant extended Warning Warning charge control (insufficient generator output) Warning generator operation...
  • Page 162 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 2.10 Warning charge control The warning regarding the charge control appears if the power supply from the generator is insufficient or missing. The remaining running time of the power plant thus depends on the remaining energy of the engine battery.
  • Page 163 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 2.11 Warning generator operation The Ventus-3M has an intelligent supply switch for the redundant supply of electrical energy to the engine system. In the event of a battery failure (main switch power plant tripped), the supply switch shifts to direct power supply via the charge controller / generator while the engine is running.
  • Page 164 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 3. Display during travel operation: Sensors for propeller- Power plant extended position (optional) (blinking during extension) Direction of power Warning...
  • Page 165 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 4. Screen Menu: Ignition circuit test Fuel content / Fuel menu Default position Engine battery voltage Main menu (only for information) Warning list 4.7 Engine battery voltage...
  • Page 166 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 5. Selectable functions in the main menu The cursor is used to select a function from the screen menu. The selected function is confirmed by pressing the rotary selector switch.
  • Page 167 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 1.2 Engine menu: In the Engine menu the total engine running time of the aircraft can be read (Tot. time).
  • Page 168 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 1.3 Fuel content / Fuel menu: Important note: Prerequisites for making settings in the tank menu: Completely filled fuselage tank...
  • Page 169 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 1.3 Fuel content / Fuel menu (cont.): Wing tank (L): Up to 2 wing fuel tanks can be installed in the Ventus-3M optionally. No fuel level sensors are installed in the wing fuel tanks.
  • Page 170 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 1.4 Ignition circuit test: The MCU3 operating unit doesn’t have a separate switch to switch off the individual ignition circuits in order to check the function of the individual ignition coils and spark plugs.
  • Page 171 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 1.4 Ignition circuit test (cont): The manual test is similar: Warm up motor (CHT approx. 40°C) Set engine’s speed to approx. 3000 rpm Select MANUAL and switch off the left ignition circuit by turning the rotary selector switch one position to the left and select LEFT.
  • Page 172 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 1.4 Ignition circuit test (cont): A turn to the right by one position then switches on both ignition circuits again, a further position to the right switches off the right ignition circuit.
  • Page 173 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 1.5 Settings: The Settings menu offers the possibility to adjust some settings of the MCU3 operating unit. Changing values always follows the same pattern:...
  • Page 174 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 1.6 Service menu: The Service menu is mainly available for diagnosis and maintenance of the system. With Com diagnose, the status of the various inputs and outputs and switch queries is displayed.
  • Page 175 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) . Operating notifications Operating notification should inform the pilot: if individual steps in the process flow of an operation were not executed or...
  • Page 176 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) . Operating notifications (cont.) Number INFO_FEHLERTANKKALIBRIERUNG (15) Display Tank calib. failed Description After triggering a tank calibration: More than 30% deviation from reference value. The calibration is discarded and the previous calibration is retained.
  • Page 177 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) . Operating notifications (cont.) Number INFO_HANDBETRIEB (19) Display Manual engine move Description Automatic spindle travel is not possible for various reasons. Spindle travel is only possible via manual operation.
  • Page 178 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) . Operating notifications (cont.) Number HINWEIS_ZUENDUNG_AUSSCHALTEN (32) Display Switch off ignition Description Manual retraction attempt with ignition switched on. Retraction is prevented. To retract, the ignition must first be switched off.
  • Page 179 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) . Operating notifications (cont.) Number HINWEIS_BENZINHAHN_OEFFNEN (36) Display Open fuel valve Description The Power plant is being extended or is extended, but the fuel shut-off valve is still closed.
  • Page 180 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) . Operating notifications (cont.) Number HINWEIS_GENERATORBETRIEB (41) Display Battery malfunction Description The supply switch has switched to generator operation, i.e. the battery supply of at least one of the monitored lines has failed.
  • Page 181 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7. Error messages Error messages should inform the pilot: if electrically operated components and sensors required for safe operation of the power plant have failed.
  • Page 182 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.1 Error Messages – Tripped fuse of an electrical circuit (FUSE): Number FEHLER_SCHALTER_AUSGEFAHREN (50) Display Extend sw. malfunc. Description Case 1: When extending the power plant, the extension limit switch is not detected even after the longest extension period to be assumed.
  • Page 183 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.2 Error Messages – Limit switch malfunction (SWITCH): Number FEHLER_WATERPUMP_FUSE (54) Display Waterpump fuse trig. Description The internal fuse for the water pump has tripped (self-resetting). The fuse is automatically reset if possible.
  • Page 184 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.3 Error Messages – Device failure or error (ERROR) Number FEHLER_WASSERPUMPE (60) Display Cool pump malfunc. Description Power supply or wiring to the cooling water pump is interrupted. Detected when switched off due to lack of voltage at the low-side switch.
  • Page 185 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.3 Error Messages – Device failure or error (ERROR) (cont.) Number FEHLER_NOTBETRIEB (64) Display Emerg. mode activated Description Emergency system has been activated (protective cover of the external emergency switch opened).
  • Page 186 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.3 Error Messages – Device failure or error (ERROR) (cont.) Number FEHLER_LADESTROM (68) Display Battery discharge Description The battery is discharged unusually quickly (measured by decrease of battery voltage).
  • Page 187 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.3 Error Messages – Device failure or error (ERROR) (cont.) Number FEHLER_CAN (73) Display Engine malfunc. Description No reception at the CAN bus of the Trijekt engine control unit for >0.5 sec. This indicates a defect in the Trijekt engine control unit, a triggered Trijekt fuse or a wiring defect in the CAN bus.
  • Page 188 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.3 Error Messages – Device failure or error (ERROR) (cont.) Number FEHLER_GASPOTENTIOMETER (78) Display Throttle malfunc. Description Error signal from the Triject-engine control unit: Wiring to gas potentiometer or potentiometer defective.
  • Page 189 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.3 Error Messages – Device failure or error (ERROR) (cont.) Number FEHLER_PROPSTOPPER_BLOCKIERT_STARTER (83) Display Propstop in place Description The engine is to be started, but the propeller stopper is still extended. The engine start is therefore blocked to prevent damage to the propeller stopper.
  • Page 190 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 7.3 Error Messages – Device failure or error (ERROR) (cont.) Number FEHLER_COMSUPPLYSWITCH (86) Display Supply sw. com malfunc. Description The data transmission from the supply-switch to the power plant control unit is interrupted.
  • Page 191 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL I. Power plant operating unit MCU3 BG (cont.) B) Functional description (cont.) 8. Information on the hardware and firmware of the devices The hardware and software versions as well as the serial number can be retrieved in the menu item System information: Menu->Service menu->System information...
  • Page 192 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Emergency system for the spindle drive If the power plant control unit fails or the operating unit in the instrument panel no longer responds to the pilot's inputs, the power plant can be extended and retracted using a separate emergency system.
  • Page 193 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Emergency system for the spindle drive (cont.) a) Extending and starting the power plant with the emergency system: o Open red switch flap o Acknowledge the operating instructions on the operating unit by pressing the rotary selector switch to confirm the warning message.
  • Page 194 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Emergency system for the spindle drive (cont.) Warning: Operation with the emergency system should be limited to emergency situations. If the red switch flap is folded upwards, all security checks of the power plant control system are switched off, in contrast to operation with the manual control switch.
  • Page 195 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Fuse panel (In the fixed lower part of the instrument panel) All master switches and fuses of the most important circuits of the motor glider are located in the upper row and are designed as automatic circuit breakers which can be opened and closed manually.
  • Page 196 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Fuse panel (cont.) Generator fuse Generator (Circuit breaker 40 A) During engine operation, the generator only charges the engine battery (Batt E). Battery charging is interrupted when the fuse is tripped. Warning:...
  • Page 197 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Fuse panel (cont.) Trijekt fuse Trijekt (fuse 7.5 A) Protection of the engine control system ("Trijekt") including the sensors for the speed, the position of the throttle valves, the cooling water temperature, the air pressure and the air temperature.
  • Page 198 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Undercarriage The Ventus-3M has a retractable main wheel with hydraulic disc brake and a steerable or rigid (optional) tail wheel. The extension/retraction process is described on page 7.2.3. For technical descriptions of the retractable landing gear system with wheel brake - see section 1 in the Ventus-3M Maintenance Manual.
  • Page 199 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Seat and restraint systems The seat pan is bolted to the mounting flanges provided on both sides of the cockpit. The seat features a backrest with integrated headrest that is adjustable during flight. The lap straps are anchored to the seat pan. The shoulder straps are attached to the front main bulkhead of the fuselage steel frame.
  • Page 200 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Static pressure and Pitot pressure system 7.6.1 Static pressure sources o Static pressure ports are on either sid of the fuselage tail boom, approx. 0.8 m / 30 ½ in front of the base of the fin These pressure ports are determined for altimeter and airspeed indicator and are optionally also suitable for other devices.
  • Page 201 Ventus-3M „Performance“ FLIGHT MANUAL Airbrake system Triple panel Schempp-Hirth type airbrakes are employed on the upper surface of the wings. They open smoothly and are very effective, the change in trim is just noticeable. When unlocked, the airbrakes might get slightly sucked out by their spring loaded cover strips, which, in this position, may then oscillate within their travel, causing some rattling and/or banging.
  • Page 202 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Baggage compartment Although an enclosed baggage compartment is not provided, soft objects (like jackets etc.) may be placed on the removable panel (covering the control linkage) behind the main spar stubs. Such baggage must be taken into account when determining the permissible load on the seat.
  • Page 203 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLUGHANDBUCH Water ballast system(s) The operating knob in the cockpit actuates the wing tanks and the fin tank (option). The fin tank dump valve is driven by a steel cable connected to the torsion drive for the wing tanks, see page 7.9.3 and page 7.9.4.
  • Page 204 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL März 2019 Revision – 7.9.2...
  • Page 205 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 7.9.3...
  • Page 206 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 7.9.4...
  • Page 207 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 7.10 Power plant system The engine and the propeller (see engine and propeller manual for construction and data) are attached to the propeller mount and connected by individual V-belts. This unit is rotatably mounted at two points to the fuselage steel frame with rubber elements for vibration damping and is rotated around a pivot point in the fuselage.
  • Page 208 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 7.11 Fuel system Description A view of the fuel system is given on page 7.11.3, for Specifications of the fuel to be used refer to page 2.4. Flexible fuel tanks in the right and left wings are available as an option. The description of refueling can be found in section 4.2.3.
  • Page 209 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 7.11 Fuel system (cont.) Fuel content indication The fuel content in the fuselage and wing fuel tanks is displayed on the operating unit of the power plant control system. The contents of the fuselage fuel tank are detected automatically.
  • Page 210 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 7.11.3...
  • Page 211 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 7.11.4...
  • Page 212 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 7.12 Electrical system Gliding avionics When operated in the plain sailplane configuration, the minimum instrumentation prescribed does not require an electrical power source. Additional equipment is connected to the power supply "Electrical System Avionics", see page 7.12.3 and 7.12.4, and according to the manufacturer's...
  • Page 213 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 7.12 Electrical system (cont.) Power plant The engine is operated with a contactless, map-controlled magnetic field ignition, which is designed as a double ignition system. The engine is managed by an electronic engine control unit (Trijekt).
  • Page 214 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 7.12.3...
  • Page 215 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 7.12.4...
  • Page 216 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 7.12.5...
  • Page 217 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL March 2019 Revision – 7.12.6...
  • Page 218 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL 7.13 Miscellaneous equipment Removable ballast (option) A mounting provision for removeable ballast (trim ballast weights) is provided in the fuselage noes forward of the rudder pedal assembly. The trim ballast weights (lead plates) are attached to the FRP-frame by means of a wing nut For information on influence on the minimum seat load refer to section 6.2.1.
  • Page 219 ELT installation The emergency transmitter can be installed at the following points in the fuselage according to the instructions of Schempp-Hirth Flugzeugbau GmbH: o on the baggage compartment floor A list of currently approved ELT’s can be found in the maintenance manual.
  • Page 220 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 8 Handling, care and maintenance and Introduction Inspection periods Alterations or repairs Ground handling / road transport Cleaning and care March 2019 Revision –...

  • Page 221: Handling, Care And Maintenance And

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Handling, care and maintenance Introduction This section contains manufacturer’s recommended procedures for proper handling and servicing. It also identifies certain inspection and maintenance requirements which must be followed if the powered sailplane is to retain that “new plane”...

  • Page 222: Inspection Periods

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Inspection periods For detailed maintenance information, please see Ventus-3M Maintenance Manual. Airframe maintenance Under normal operating conditions no airframe maintenance work is required between the annual inspections. The greasing – except of spigots and ball bearings of the wing and tailplane attachment fittings –...
  • Page 223 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Power plant maintenance Propeller Maintenance work on the propeller is required after every 25 hours of engine operation time or at least once a year in accordance with the instructions given in the propeller manual.

  • Page 224: Alterations Or Repairs

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Alterations or repairs Alterations Any change to the approved type which may affect its airworthiness has to be notified to the airworthiness authority prior to its implementation. The airworthiness authority will determine whether and to what extent a supplementary type examination has to be carried out.

  • Page 225: Ground Handling / Road Transport

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Ground handling / road transport Towing/pushing When towing the powered sailplane behind a car, a tail dolly should always be used to avoid unnecessary tailplane loads due to vibrations on the fittings especially in tight turns.

  • Page 226: Cleaning And Care

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Cleaning and care Although the surface coating of a composite aircraft is robust and resistant, always take care to maintain a perfect surface. For cleaning and caring the following is recommended: o Clean the surface (especially the leading edge of the wing panels, horizontal stabilizer and fin) with clear water, a sponge and a chamois leather.
  • Page 227 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL o It is advisable to clean the canopy with PLEXIKLAR or a similar cleaning agent for Plexiglas or with warm water if necessary. The canopy should be wiped down with a soft clean chamois leather or a very soft material such as cotton.
  • Page 228 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Section 9 Supplements Introduction List of inserted supplements March 2019 Revision –...

  • Page 229: Supplements

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL Supplements Introduction This section contains appropriate supplements necessary to safely and efficiently operate the aircraft when equipped with various optional systems and equipment. March 2019 Revision – 9.1.1...
  • Page 230 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3M „Performance“ FLIGHT MANUAL List of inserted supplements Date Section Title of the inserted supplements March 2019 Revision – 9.2.1...

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