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Schempp-Hirth Flugzeugbau Ventus–3T Sport Flight Manual

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SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Model:
Edition:
Serial-No.:
Registr.-No.:
Date of issue:
This flight manual has been approved by EASA with
"Type certificate EASA.A.627" on July the 20
This powered sailplane is to be operated in compliance with information and limitations
Approval of translation has been done by best knowledge and judgement.
In any case the original text in German language is authoritative.
FLIGHT MANUAL
for Powered Sailplane
V e n t u s – 3 T
S p o r t
A p r i l
contained herein.
2 0 1 8
th
, 2018

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  • Page 1 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLIGHT MANUAL for Powered Sailplane V e n t u s – 3 T Model: S p o r t Edition: Serial-No.: Registr.-No.: A p r i l 2 0 1 8 Date of issue: This flight manual has been approved by EASA with “Type certificate EASA.A.627”...
  • Page 2 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Record of revisions Any revisions 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, this line highlights the last amendment on each page.
  • Page 3 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Erfassung der Berichtigungen/Records of revisions Bezug Reference 0.1.2 Dez. / TM 627-1 0.2.4 Dec. Änderung des Flughandbuchs und des 2019 Wartungshandbuchs 4.5.3.2 TN 627-1 Amendment of the Flight Manual and the Maintenance Manual ÄB / MB: Änderungsblatt –...
  • Page 4 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 0.1.1 April 2018 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 0.3.1 April 2018 ÄB / MB: Änderungsblatt –...
  • Page 5 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 1.0.1 April 2018 1.1.1 April 2018 1.2.1 April 2018 1.3.1 April 2018 1.4.1 April 2018 1.4.2...
  • Page 6 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 2.0.1 April 2018 2.1.1 April 2018 CS 22 2.2.1 April 2018 CS 22 2.2.2...
  • Page 7 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 4.0.1 April 2018 4.0.2 April 2018 4.1.1 April 2018 CS 22 4.2.1.1 April 2018 CS 22 4.2.1.2...
  • Page 8 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference CS 22 4.5.5.1 April 2018 CS 22 4.5.5.2 April 2018 CS 22 4.5.5.3 April 2018 CS 22 4.5.6.1...
  • Page 9 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 5.0.1 April 2018 5.1.1 April 2018 CS 22 5.2.1.1 April 2018 CS 22 5.2.1.2...
  • Page 10 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 7.0.1 April 2018 7.1.1 April 2018 7.2.1 April 2018 7.2.2 April 2018 7.2.3 April 2018 7.2.4...
  • Page 11 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK FLUGHANDBUCH/FLIGHT MANUAL Ventus-3T „Sport“ Verzeichnis der Seiten/List of effective pages Abschnitt Seite Ausgabedatum Bezug Affected section Affected pages Date of issue Reference 7.4.1 April 2018 7.5.1 April 2018 7.6.1 April 2018 7.7.1 April 2018 7.8.1 April 2018 7.9.1...

  • Page 12: Table Of Contents

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Table of contents Section General Limitations Emergency procedures Normal procedures Performance Weight & balance Aircraft and systems description Aircraft care, maintenance and servicing Supplements April 2018 Revision – 0.3.1...

  • Page 13: General

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Section 1 General Introduction Certification basis Warnings, cautions and notes Description and technical data Three-side view April 2018 Revision – 1.0.1...
  • Page 14 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 15 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Certification basis This non-self-launching powered sailplane, model designation V e n t u s - 3 T has been approved by the European Aviation Safety Agency (EASA) in compliance with the airworthiness requirements contained in CS-22, Amendment 2, dated March the 5 , 2009.
  • Page 16 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Warnings, cautions and notes Particularly important statements in this manual regarding flight safety 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 „CAUTION“...
  • Page 17 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Descriptive data 1.4.1 Descriptive The “Ventus-3T” is a flap equipped, single-seat high performance powered sailplane built from fiber reinforced plastic (FRP), featuring flaps and a T-tail (fixed horizontal stabilizer with elevator, fin and rudder).
  • Page 18 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Vertical tail Fin and rudder are constructed as a GFRP/foam-sandwich. On request 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 19 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Propulsion system The propulsion system was first developed to avoid outlanding or to overcome zero lift conditions, but it also can be used to realize soaring safaris or for example to reach a wave after winch launch or aerotow.
  • Page 20 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Technical Data Wing Span 18.00 m 59.06 ft Area 10.84 m² 116.68 ft² Aspect ratio 29.90 0.602 m 1.98 Fuselage Length 6.63 21.75 ft Width 0.59 1.94 Height 0.76 2.49 Mass Empty mass approx.
  • Page 21 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Three-side view April 2018 Revision – 1.5.1...

  • Page 22: Limitations

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 Minimum equipment...
  • Page 23 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 24 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Airspeed Airspeed limitations and their operational significance are shown below: SPEED (IAS) REMARKS Do not exceed this speed in Never exceed speed in km/h any operation and do not use calm air for flap settings “0”, more than 1/3 of control “-1”, “-2”, “S”, “S1”...
  • Page 25 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Speed (IAS) Remarks Do not exceed this speed Maximum speed for aerotow 180 km/h during an aerotow Maximum speed for winch Do not exceed this speed 150 km/h launch during a winch launch...
  • Page 26 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 2.3 Airspeed indicator markings Airspeed indicator markings and their colour code significance are shown below: MARKING SIGNIFICANCE km/h Red line at Maximum permitted speed It is not allowed to fly in this speed...
  • Page 27 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Power plant, fuel and oil Engine manufacturer: Solo Kleinmotoren GmbH 71069 Sindelfingen, Germany Engine model: SOLO 2350 with silencer according to Technical Note No. 4603-3 Engine max and continuous power: 15.3 kW...
  • Page 28 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Power plant instrument markings Power plant operating limits shown on the instrument and the corresponding colour code significance are shown below: Engine control Display Normal range Caution range Limit unit > 5700 4000 –...
  • Page 29 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Weights (masses) Wing span: 18 m Maximum permitted take-off mass 600 kg 1323 lb Maximum permitted landing mass 600 kg 1323 lb Maximum permitted take-off and landing mass 512 kg without water-ballast with installed power plant...
  • Page 30 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Center of gravity in flight Aircraft attitude: Tail jacked up such that the upper edge of a 100 : 3.0 wedge is horizontal when placed on top of the tail cone Datum plane:...
  • Page 31 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Approved maneuvers The powered sailplane is certified in category Utility, non-self-launching Warning: Aerobatic maneuvers are NOT approved! April 2018 CS 22 Revision – 2.8.1...
  • Page 32 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Maneuvering load factors The following maneuvering load factors must not be exceeded: o With airbrakes retracted at V = 180 km/h, 97 kt, 112 mph = + 5.3 = - 2.65 at V = 280 km/h, 151 kt, 174 mph = + 4.0...
  • Page 33 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 34 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 2.11 Kinds of operation This powered sailplane is approved for o VFR-flying in daytime o cloud flying up to a maximum mass of 490 kg (1080 lb) with the prescribed minimum equipment installed (see page 2.12).
  • Page 35 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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-3T Maintenance Manual.
  • Page 36 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 2.12.2 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 37 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 38 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 39 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 2.15 Limitation placards *) possible discrepancies from this – see page 6.2.2.1 and 6.2.3.1 – must be registered Note: For further placards refer to the Maintenance Manual Ventus-3T. April 2018 CS 22 Revision –...

  • Page 40: Emergency Procedures

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Section 3 Emergency procedures Introduction Canopy jettisoning Bailing out Stall recovery Spin recovery Spiral dive recovery Engine failure Engine fire Other emergencies April 2018 Revision – 3.0.1...
  • Page 41 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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. April 2018 Revision –...
  • Page 42 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Jettisoning the canopy o Stop and retract the power plant if possible o Swing red locking lever (situated on the canopy frame on the left) backward (about 90°) up to its stop...
  • Page 43 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Bailing out o If possible the power plant should be turned off and retracted. o After jettisoning the canopy - see page 3.2.1 - the bailing out is done as follows:  Actuate release buckle of restraint system ...
  • Page 44 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Stall recovery Power plant retracted On stalling whilst flying straight ahead 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 45 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Spin recovery A safe recovery from a spin is performed as follows: o Aileron in neutral position. o Apply rudder against the direction of the spin rotation o Ease control stick forward until rotation ceases and the airflow is restored o Centralize rudder and pull gently out of dive.
  • Page 46 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Spiral dive recovery A spin - depending of 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 Recovery from a spiral dive is achieved by easing the control stick forward and applying opposite rudder and aileron.
  • Page 47 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Engine failure From experience gained to date with the installed engine, no carburetor icing has occurred yet. Should the engine fail in flight due to the lack of fuel or a defect, retract it as quickly as possible to avoid any unnecessary deterioration of the flight performance - for more precise data refer to section 5.
  • Page 48 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Engine fire In case of engine fire the following actions should be taken: o CLOSE fuel shut-off valve o Leave power plant in extended position o Master switch “OFF” o Ignition “OFF”...
  • Page 49 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Other emergencies Flying with water ballast on one side If, while flying or dumping water ballast (for example due to leaks in the water tanks or a single blocked dumping valve), the weight distribution should become asymmetrical this can be noticed by having to deflect the ailerons for flying straight.
  • Page 50 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Loss of directional control Should a rudder control cable break in flight, the aircraft may quickly start yawing and rolling, thus resulting in a spiral dive. To possibly avoid this situation on time set the flaps immediately at “0”.
  • Page 51 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Emergency landing on water According to the experiences made until today, proceeding as follows is recommended Approach: o Land parallel to the shore. o Undercarriage extended. o Ventilation system closed. o Water ballast valves closed.
  • Page 52 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Section 4 Normal operating procedures Introduction Assembly 4.2.1 Rigging 4.2.2 De-rigging 4.2.3 Fueling 4.2.4 Fuel draining 4.2.5 Power plant, removal and re-installation Inspections 4.3.1 Daily inspection 4.3.2 Inspection after installing the power plant...
  • Page 53 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.7 Flight with water ballast 4.5.8 High altitude flight 4.5.9 Flight at low temperatures 4.5.10 Flight in rain 4.5.11 Aerobatics April 2018 Revision – 4.0.2...

  • Page 54: Normal Procedures

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Normal operating procedures Introduction This section provides check lists for conducting the daily and pre-flight inspection. Furthermore this section describes normal operating procedures and recommended speeds. Normal procedures associated with optional equipment are described in section 9.
  • Page 55 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Assembly 4.2.1 Rigging Rigging can be done by two people if a trestle or stand is available to be placed under the tip of one inboard wing panel. Prior to rigging, all connecting points on fuselage, wing and tailplane should be cleaned and greased.
  • Page 56 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 57 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 rigging tool and its pin forwards, seat stabilizer nose.
  • Page 58 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.2.2 De-rigging De-rigging can be done by two people if a wing stand or trestle is available to support one wing. Prior the de-rigging the TEK-probe at the vertical fin should be removed. Remove all sealing tapes applied during rigging.
  • Page 59 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.2.3 Refuelling For refuelling the power plant must be extended by means of the manual operation switch, since the quick-disconnect coupling is found inside the engine compartment on the right upper side. The coupling is a quick-disconnect coupling design and thanks to this refuelling is done without spilling.
  • Page 60 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Calibrating the fuel quantity indicator When changing the type of fuel, for example AVGAS to car gasoline, recalibrating of the fuel indication must be done. Recalibration of the fuel indication is done with fully retracted power plant and...
  • Page 61 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.2.4 Draining the fuel tanks Fuselage fuel tank Only a fuselage fuel tank is provided which can be drained. The drain valve is found on the bottom of the engine compartment on the starboard side.
  • Page 62 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.2.5 Removal and re-installation of the power plant In order to allow operating of the powered sailplane in “pure sailplane configuration”, its power plant might be quickly removed. The following components may be removed: o Engine with propeller The mass reduction is approx.
  • Page 63 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Re-installing the power plant o Slide down engine with mounted prop. onto the pylon fork – together with the rubber engine shock mounts (vibration isolators, two per each lug). Tighten engine mounting bolts such that the spacing between the rubber shock mounts is as follows - see also sketch on page 4.2.5.3.
  • Page 64 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Illustrations to removing and re-installing the power plant April 2018 CS 22 Revision – 4.2.5.3...
  • Page 65 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 66 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL o Check for the presence of foreign objects o Check fuel quantity o Check fuel line(s) and tank vent line for proper connection Check main wheel tire pressure: 4.0 bar / 58 psi o Check tow release mechanism(s) for proper condition and function o Check upper and lower wing surfaces for damage.
  • Page 67 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL o Check fuselage for damage, especially on its lower side. o Check that the STATIC pressure ports for the ASI on the tail boom (0.8 m /2.62 ft forward of the base of the fin) are clear.
  • Page 68 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL o Check condition of tail wheel (2.5 bar / 36 psi standard wheel, 5.0 bar / 72.5 psi TOST Mini 150) o Should a total energy compensation probe be used, mount it and check the line (when blowing gently from the front to the probe the variometer(s) connected should indicate “climb”).
  • Page 69 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL o Check battery in the vertical fin for correct installation according to loading plan. o Check horizontal tailplane for proper attachment and locking o Check elevator and rudder for free movement o Check trailing edge of elevator and rudder for damage...
  • Page 70 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.3.2 Inspection after re-installing the power plant After installing the power plant, the following checks are to be carried out: o Check for correct spacing of the upper rubber engine shock mounts (vibration isolators) –...
  • Page 71 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Pre-flight inspection April 2018 CS 22 Revision – 4.4.1...
  • Page 72 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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) For aerotow only the nose tow release must be used.
  • Page 73 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 74 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Winch launch Winch launch is only permissible at the installed c/g tow release and with retracted power plant Maximum permitted launching speeds = 150 km/h (81 kt, 93 mph) Prior to take-off – with flaps to be at setting "+2" – set the elevator trim as...
  • Page 75 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Warning: It is explicitly advised to avoid winch launching with a tail wind! Important Note: 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 76 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.2 Take off and climb The Ventus-3T is a non-self-launching powered sailplane, which must be launched either by winch or by aerotow with its power plant retracted exactly like a pure glider – see section 4.5.1 Warning: Self-launch is not permitted.
  • Page 77 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.3 Flight (Power plant retracted) The powered sailplane has pleasant flight characteristics and can be flown effortlessly at all speeds, loading conditions (with or without water ballast), configurations and c/g positions. As the elevator trim is linked to the flaps, it should be set such that there is no load on the control stick at a speed of about 115 to 125 km/h (62 to 66 kt, 71 to 78 mph) with flaps set at "0"...
  • Page 78 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL High speed flying 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 airspeed indicator (ASI) in different colours.
  • Page 79 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Warning: Extending the airbrakes at high speeds: Check in advance that the safety harnesses are tight and make sure that the control stick is not inadvertently jarred forwards when the airbrakes are extended.
  • Page 80 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 81 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Low speed flight and stall behaviour In order to become familiar with the aircraft it is recommended to explore stall behavior at a safe height. This should be done using the various flap settings whilst flying straight ahead and also whilst in a 30°...
  • Page 82 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Turning flight stalls When stalled during a coordinated 45° banked turn 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 83 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.4 Flight (power plant extended) Starting the power plant in flight The power plant should only be extended and started where there is a suitable landing terrain within gliding range. Keep in mind that with power plant extended, L/D is only about 18 to 22 : 1 depending on speed.
  • Page 84 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL The loss of height, from the moment of extending the power plant until it runs is approx. 50 to 60 m (164-197 ft). Should the prop stop spinning after the “DEKO”-handle was released, pull it back again and repeat the starting procedure.
  • Page 85 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL For performance data with power plant extended refer to section 5.3.2. The best rate of climb is achieved with flaps set at “+2” at a speed of about 95 km/h (51 kt, 59 mph) to 100 km/h (54 kt, 62 mph).
  • Page 86 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Automatic ignition cut-off device As engine speed increases constantly with flying speed, a safety device cuts off the ignition of both cylinders just prior to reaching the maximum permitted propeller speed and re-contacts automatically after the propeller speed has fallen below 4200 RPM.
  • Page 87 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL As clearly shown by the data of page 5.3.3.1 "Flight Performances", the maximum range results from the "sawtooth" method. It consists of the following flight sections repeated as required: o a climb at a speed of about 95 km/h (51 kt, 59 mph) o a glide in "clean"...
  • Page 88 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Low speed flight and stall behaviour (power plant extended) Compared with the stall behaviour in “clean” configuration (power plant retracted), no major differences are to expect when stalling from straight and level or from turning flight - see page 5.2.2.
  • Page 89 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.5 Approach Power plant retracted Normal approach speed with airbrakes fully extended, flaps set at "L" and wheel down is 105 km/h (57 kt, 65 mph) without water ballast, or 115 km/h (62 kt, 71 mph) at maximum permitted all up mass.
  • Page 90 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Slips are a very effective landing aid. Side slips in 18 m configuration may be conducted in a straight line with up to about 80% of the rudder travel, resulting in a yaw angle of about 40° and a bank angle of about 15 to 25°.
  • Page 91 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Power plant extended (only with ignition OFF and in emergency case permitted) Landings with extended power plant (ignition OFF), can be done in the same manner as in "clean" configuration (power plant retracted).
  • Page 92 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.6 Landing For off field landings the undercarriage should always be extended as the pro- tection of the pilot is much better, especially from vertical impacts on landing. Main wheel and tail wheel should touch down simultaneously.
  • Page 93 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.7 Flight with water ballast To reach maximum permitted all up mass, it is necessary to carry water ballast. Wing ballast tanks The water tanks are integral compartments in the nose section of the wing panels.
  • Page 94 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Filling the water tanks Tanks must be filled only in rigged condition and dumped completely prior de- rigging. Warning: The tank on either side must always be filled with the same amount of water to prevent negative influence on the stability in the roll axis.
  • Page 95 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Flight with water ballast Before taking off 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 96 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 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 97 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 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 mechanically linked to the drive for the valves of the middle wing tank, so that the middle and outboard wing tanks are always opened simultaneously with the fin tank.
  • Page 98 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Important note: o Before the wing water tanks are filled, it must be checked (with dump valves opened) that both drain plugs open up equally. Leaking (dripping) valves are avoided by cleaning and greasing the plugs and their seats (with valves opened).
  • Page 99 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.8 High altitude flight When flying at high altitude it should be noted that the airspeed TAS (TRUE AIRSPEED) increases versus airspeed IAS (INDICATED AIRSPEED). This difference does not affect the structural integrity or load factors, but to avoid...
  • Page 100 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.9 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 101 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.10 Flight in rain When flying the powered sailplane 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 102 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 4.5.11 Aerobatics Aerobatics are not approved! April 2018 CS 22 Revision – 4.5.11.1...

  • Page 103: Performance

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Section 5 Performance Introduction Approved data 5.2.1 Airspeed indicator system errors 5.2.2 Stall speeds 5.2.3 Take off distances 5.2.4 Additional information Additional information 5.3.1 Demonstrated crosswind performance 5.3.2 Flight polar 5.3.3 Climb speed and range 5.3.4 Noise data...
  • Page 104 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 105 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Data (structured according to CS 22) 5.2.1 Airspeed indicator system errors Errors in indicated airspeed (IAS) caused by the measurement points of Pitot/Static pressure may be read off from the following calibration charts. These charts are applicable to free flight in the indicated conditions.
  • Page 106 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Power plant: Retracted or extended PITOT pressure source: Fuselage nose cone STATIC pressure ports: Fuselage tail boom, 80 cm (31.5 in) forward of base of fin April 2018 CS 22 Revision –...
  • Page 107 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 5.2.2 Stall speeds The following stall speeds (IAS) at various flap settings were determined in straight and level flight: Configuration POWER PLANT RETRACTED Wing span 18 m All-up mass 600 kg 600 kg (approx.)
  • Page 108 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 5.2.3 Take off distances Taking off on own power is not permissible, since the Ventus-3T is not capable of self-launching. April 2018 CS 22 Revision – 5.2.3.1...
  • Page 109 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 5.2.4 Additional information None. April 2018 CS 22 Revision – 5.2.4.1...
  • Page 110 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Additional information 5.3.1 Demonstrated crosswind performance The maximum crosswind velocity, at which take-offs and landings have been demonstrated, is 20 km/h (11 kt). April 2018 Revision – 5.3.1.1...
  • Page 111 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 5.3.2 Flight polar The following data refer to a height of 0 m AMSL and 15 °C (32°F) Power plant retracted or removed Wing span 18 m All-up mass 600 kg, 1323 lb Wing loading 55.4 kg/m...
  • Page 112 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL April 2018 Revision – 5.3.2.2...
  • Page 113 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 5.3.3 Range (in calm air) Horizontal flight Data refer to horizontal flight at continuous power. Cruising speed 140 km/h (76 kt, 87 mph) Fuel consumption 9.5 l/h, 2.5 US gal/h, 2.1 IMP Gal/h...
  • Page 114 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL April 2018 Revision – 5.3.3.2...
  • Page 115 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 5.3.4 Noise data At 300m (984 ft) above ground level, the fly-over noise level of the Ventus-3T is 57.7 dB(A) and is far below the noise level limit of 64.0 dB(A). With these noise levels, the motor glider complies with the noise protection requirements for aircraft (LSL) dated August 1th, 2004.
  • Page 116 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Section 6 Weight (mass) and balance Introduction Weight (mass) and balance log sheet and permitted payload range Determination of: Water ballast in wing tanks Water ballast in fin tank (option) April 2018 Revision –...

  • Page 117: Weight & Balance

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 and the calculation method for establishing the permitted payload range and a comprehensive list of all equipment available is contained in the Maintenance Manual Ventus-3T.
  • Page 118 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Weight and balance record / Permitted load range The following loading chart – see page 6.2.2 and 6.2.3 – shows, beside other data, the empty weight, the maximum and minimum load on the seat and maximum payload in the fuselage.
  • Page 119 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 6.2.1 Seat load of less than the required minimum There are two ways to compensate a seat load of less than the required minimum: o Ballast by means of lead or sand cushion The ballast (lead or sand cushion) must be attached firmly to the lap belt mounting brackets.
  • Page 120 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 6.2.2 Weight and balance log sheet for Ser.-No.: ___________ (Power plant installed) Date of weighing Empty mass [kg] (without usable amount of fuel) Equipment list dated Quantity / Mass Quantity / Mass...
  • Page 121 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 6.2.3 Weight and balance log sheet for Ser.-No.: ___________ (Power plant removed) Date of weighing Empty mass [kg] (without usable amount of fuel) Equipment list dated Quantity / Mass Quantity / Mass...
  • Page 122 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 6.2.4 Wing water ballast load Maximum all-up mass including water ballast m 600 kg 1323 lb C/G position of water ballast in wing tanks (aft of datum): Inner tank (inboard wing panel): 172 mm / 6.77 in...
  • Page 123 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 6.2.5 Water ballast loads in fin tank (optional) 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 124 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Important Note: Fill always full liters in the fin tank. At the discontinuity of the diagram (vertical axis, wing water ballast) the correspondent fin water ballast (full liters) can be filled. Since the dump valve of the fin tank is linked to the damp valves of the middle wing tanks, only the nose heavy moment of the middle and outer wing water ballast tanks can be compensated with the fin tank.
  • Page 125 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Section 7 Description of the aircraft and its systems Introduction Cockpit description Instrument panel Undercarriage Seat and restraint system Static pressure and total pressure system Airbrake system Baggage compartment Water ballast system(s) 7.10 Power plant system...
  • Page 126 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Description of the aircraft and its systems Introduction This section provides a description of the powered sailplane including its systems and operation. For details concerning optional and not standard systems and equipment refer to section 9 "Supplements”.
  • Page 127 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLÎGHT MANUAL Cockpit description April 2018 Revision – 7.2.1...
  • Page 128 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL All instruments and control elements are within easy reach of the pilot. Tilt up instrument panel The instrument panel is clearly visible for the pilot. With open canopy, the panel can be tilted upwards. The cover of the instrument panel is fixed to it using screws.
  • Page 129 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 130 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Canopy locking and jettisoning lever Red marked lever on the left canopy frame. To open or jettison the canopy, swing lever back (approx. 90°) up to its stop and raise canopy to the right.
  • Page 131 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Airbrake lever Blue lever on the left hand side of the cockpit to operate the airbrakes. Airbrakes locked forward position Airbrakes approx. 40 mm (1.57 in) pulled unlocked Airbrakes fully rearward position...
  • Page 132 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Parachute rip cord attachment (not illustrated) Red ring, situated at the bulkhead in front of the fuselage steel tube center frame, on the left side. Adjustment of Backseat (not illustrated) The optional backseat is adjustable according to the needs of the pilot. The adjustment is only possible on the ground and must therefore be done before the flight.
  • Page 133 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Instrument panel A description of items indicated with numbers I – VI can be found on page 7.3.2. A description of the rest of the instrumentation is not deemed necessary. April 2018 Revision –...
  • Page 134 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Master switch ON/OFF switch for the electronic DOWN Pneumatic valve (not displayed) Optional panel-mounted two-way cock for selecting the VSI indication. T.E. Variometer(s) fed from T.E. Compensation probe STATIC Variometer(s) fed from Static Pressure ports T.E.
  • Page 135 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Engine control unit The engine control unit is installed on the left side of the instrument panel. The engine control unit allows a partially automatic control of the power plant extension, retraction and operation.
  • Page 136 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Overview about the readouts and the control elements Automatic circuit breaker Protecting the pylon’s spindle electronic (7,5A) Menu push-button Features: o Scroll through the menu of the LCD display o Affirmation of warnings and error messages...
  • Page 137 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Ignition Switch Ignition ON Power plant extends completely (automatic mode) Electrical fuel pump is switched on DOWN: Ignition OFF Power plant retracts completely (automatic mode) The electrical fuel pump is switched off in case it is...
  • Page 138 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Manual operation switch (Pylon drive switch) The manual operation switch is used to travel the power plant on the ground or in case the control unit has switched off the automatic mode because of missing or incorrect information about the position of the power plant or the engine rpm.
  • Page 139 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL LCD-Display In the four-digit LCD-display the following values are displayed when the engine is extended: 4 9 5 0 o Engine speed [RPM] I 2 _ L o Fuel quantity [Liter] I 2,3 U...
  • Page 140 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Alarm-LED The red alarm LED flashes when operation advices, warnings and error messages are shown in the LCD-display Buzzer (not illustrated) With different sounds the buzzer gives warnings to the pilot. Continuous tone...
  • Page 141 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Explanation of different readouts on the LCD-Display 4 9 5 0 Engine speed indication Shows the engine speed in RPM, step size 50 RPM A decimal point between first and second digit is displayed when the electrical fuel pump is 4.3 0 0...
  • Page 142 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL t 1 2.9 Resettable short period elapsed-time counter Resettable elapsed-time counter (0 to 99.9 min). Reset as follows: o ignition off o engine retracted o press the menu button for 3 s.
  • Page 143 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Operation advice F U E L Fuel shut-off valve limit switch Monitoring the setting of the fuel shut-off valve: Display is blinking + Alarm LED + continuous sound alarm when the fuel shut-off valve is not completely open with ignition ON.
  • Page 144 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Operation modes of the engine control unit Automatic mode The automatic mode is the standard operation mode for the engine control unit in flight. In this case extension and retraction of the power plant are completely controlled by the ignition switch.
  • Page 145 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Important note: The following procedures will help the pilot to safely finish the flight in case of an error occurrence in the engine control system. Prior to the next flight with engine operation the cause of fault must be fixed!
  • Page 146 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Error messages and corrective o Press the menu button to affirm the error message(s) in the LCD- display. o Take further actions if possible. If the error persists continue the flight with the restrictions below.
  • Page 147 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Emergency procedure o Press the menu button to affirm the error message(s) in the LCD- display. o Check the fuse for the pylon spindle drive in the engine control unit and push the fuse in again if necessary.
  • Page 148 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Program error The error message listed below is displayed when an internal error has occurred when the engine control unit was switched on Restrictions in Trouble- Error Description operation as long as...
  • Page 149 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Set-up menu In the set-up menu the settings of the engine control unit can be viewed. Some settings are adjustable. Enter the set-up menu: With the engine fully retracted hold the menu button while switching on the master switch.
  • Page 150 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Undercarriage The Ventus-3T features a retractable main wheel with a brake and a tail wheel or a tail skid. The extension/retraction process of the main wheel is described on page 7.2.3. For a technical description of the retractable undercarriage including wheel brake refer to section 1 of the Ventus-3T Maintenance Manual.
  • Page 151 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Seat and restraint system The seat pan is screwed to mounting flanges provided on either side of the cockpit. The seat features a seat back with integrated head rest, which inclination is adjustable. The lap straps are anchored to the seat pan. The shoulder straps are attached to the front wing suspension tube.
  • Page 152 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Static pressure and Pitot pressure system Static pressure sources o Static pressure ports are on either side of the fuselage tail boom, 0.8 m (31.5 in.) forward of the base of the fin (in the horizontal symmetry plane) These static pressure ports are used for altimeter and airspeed indicator and eventually for further optional instruments.
  • Page 153 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 154 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 155 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Water ballast system(s) The operating knob in the cockpit actuates the wing tanks and the fin tank (option). A steel cable connects the dumping valves in the wing to the dump valve of the fin tank –...
  • Page 156 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL April 2018 Revision – 7.9.2...
  • Page 157 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL April 2018 Revision – 7.9.3...
  • Page 158 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 7.10 Power plant system The engine with its propeller is suspended in the fork of the steel tube pylon by means of four (4) engine shock mounts (vibration isolators) - the two arresting wires are also attached to the pylon.
  • Page 159 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 7.11 Fuel system The fuel tank is not removable and permanently installed to the fuselage. Refueling is done as described in section 4.2.3. The fuel tank vent line extends overboard at a small opening approx. 130 mm (5.1 in.) aft of the undercarriage.
  • Page 160 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL April 2018 Revision – 7.11.2...
  • Page 161 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 7.12 Electrical system 7.12.1 Gliding avionics When operated in the pure sailplane configuration, the minimum instrumentation prescribed does not require any electrical power source. Additional equipment is to be wired according to the instructions of the relevant instrument´s manufacturer.
  • Page 162 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL April 2018 Revision – 7.12.1.2...
  • Page 163 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 7.12.2 Power plant The engine features a single-ignition system by means of magnetos (contact-less). A 12 V power source, located at the base of the instrument panel as shown on page 7.12.2.2 is only necessary for pylon spindle drive and the engine control unit with its RPM-indicator.
  • Page 164 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL April 2018 Revision – 7.12.2.2...
  • Page 165 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 7.13 Miscellaneous equipment Removable ballast (option) A mounting provision for removable ballast (trim ballast weights) is provided in the fuselage nose forward of the rudder pedal assembly. The trim ballast weights (lead plates) are attached to the FRP-frame by means of a wing bolt.
  • Page 166 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL ELT installation The Installation of an Emergency Locator Transmitter is possible in the following places and must comply with the relevant instructions provided by Schempp-Hirth Flugzeugbau GmbH: o on the bottom of the baggage compartment A list of currently approved ELTs is found in the Maintenance Manual.
  • Page 167 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Section 8 Handling, care and maintenance Introduction Inspection periods Alterations or repairs Ground handling / road transport Cleaning and care April 2018 Revision – 8.0.1...

  • Page 168: Handling, Care And Maintenance

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 169: Inspection Periods

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Inspection periods For details concerning the maintenance of this powered sailplane refer to the Ventus-3T Maintenance Manual. Airframe maintenance Under normal operating conditions no airframe maintenance work is required between the annual surveys.
  • Page 170 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL 8.2.3 Power plant maintenance Propeller Maintenance work on the propeller is to be conducted after every 25 hours of engine time or minimum once in a year and must comply with the instructions given in the propeller manual.

  • Page 171: Alterations Or Repairs

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Alterations or repairs Alterations All alterations on an approved aircraft model must be approved by the responsible airworthiness authorities prior to the initial operation of the altered aircraft. Repairs If there is any uncertainty whatsoever regarding the significance of damage discovered, the powered sailplane should always be inspected by a CFRP/GFRP personal with appropriate authorization.

  • Page 172: Ground Handling / Road Transport

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ 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 173: Cleaning And Care

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Cleaning and care Although the surface coating of a composite aircraft is robust and resistant, always take care of a perfect surface. For cleaning and caring the following is recommended: o Clean the surface (especially the leading edge of wing panels, horizontal stabilizer and fin) with clear water, a sponge and a chamois leather.
  • Page 174 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL o The canopy should be cleaned with a plexiglass cleaner (e.g. "Mirror Glaze", "Plexiklar" or similar) and only if necessary, with warm water. The canopy should be wiped down only with soft, clean chamois leather or a very soft material as used for gloves.
  • Page 175 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Section 9 Supplements Introduction List of inserted supplements April 2018 Revision – 9.0.1...

  • Page 176: Supplements

    SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL Supplements Introduction This section contains the appropriate supplements necessary to safely and efficiently operate the powered sailplane when equipped with various optional systems and equipment. April 2018 Revision – 9.1.1...
  • Page 177 SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK Ventus-3T „Sport“ FLIGHT MANUAL List of inserted supplements Date Section Title of inserted supplement April 2018 Revision – 9.2.1...

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