Download
Share
Print this page
DG Flugzeugbau DG-800S Flight Manual
  1. Manuals
  2. Brands
  3. DG Flugzeugbau Manuals
  4. Aircrafts
  5. DG-800S
  6. Flight manual

DG Flugzeugbau DG-800S Flight Manual

Hide thumbs Also See for DG-800S:

Advertisement

Quick Links

DG Flugzeugbau GmbH
Otto-Lilienthal-Weg 2 / Am Flugplatz • • • • D-76646 Bruchsal • • • • Germany
Postbox 1480, D-76604 Bruchsal • • • • Germany
Tel. 07251 3020-100 • • • • Telefax 07251 3020-200 • • • • eMail: dg@dg-flugzeugbau.de
Spare part and material sales: Tel. 07251 3020-270 • • • • lager@dg-flugzeugbau.de
www.dg-flugzeugbau.de
Model:
German Data Sheet No.:
Factory Serial No.:
Registration No.:
Date of Issue:
Pages as indicated by "App." are approved by:
(Signature)
(Authority)
(Stamp)
(Original date of approval)
This sailplane is to be operated in compliance with information and limitations
contained herein.
The original German Language edition of this manual has been approved as
operating instruction according to "Paragraph 12(1) 2. of Luft-Ger Po".
Approval of translation has been done by best knowledge and judgement.
F L I G H T M A N U A L
for the
S A I L P L A N E
DG-800S
DG-800S
384
_____________________
_____________________
April 1997
_____________________
_____________________
_____________________
_____________________

Advertisement

loading

Related Manuals for DG Flugzeugbau DG-800S

Summary of Contents for DG Flugzeugbau DG-800S

  • Page 1 DG Flugzeugbau GmbH Otto-Lilienthal-Weg 2 / Am Flugplatz • • • • D-76646 Bruchsal • • • • Germany Postbox 1480, D-76604 Bruchsal • • • • Germany Tel. 07251 3020-100 • • • • Telefax 07251 3020-200 • • • • eMail: dg@dg-flugzeugbau.de Spare part and material sales: Tel.
  • Page 2 Flight manual DG-800S Warnings All sailplanes, especially those with retractable powerplants, are very complex technical devices. If you don’t use yours as it is intended and within the certified operating limitations or if you fail to carry out proper maintenance work, it may harm your health or place your life in danger.
  • Page 3 Flight manual DG-800S Record of revisions Any revision of the present manual, except actual weighing data, must be recorded in the following table and in case of approved sections endorsed by the responsible airworthiness authority. The new or amended text in the revised page will be indicated by a black vertical line in the right hand margin, and the Revision No.
  • Page 4 Flight manual DG-800S 0.2 List of effective pages Section Page issued replaced replaced April 1997 see record of revisions " " April 1997 " " " " " " App. April 1997 " " " " " " " "...
  • Page 5 Flight manual DG-800S 0.2 List of effective pages (cont.) Section page issued replaced replaced App. 4.12 April 1997 " 4.13 " " 4.14 " " 4.15 " Nov. 01 " 4.16 " " April 1997 " " " " Nov. 01 "...
  • Page 6 Flight manual DG-800S 0.2 List of effective pages (cont.) Section page issued replaced replaced April 1997 " " " " January 2003 " June 1998 January 2003 " May 2015 " Issued: May 2015 TN DG-G-11...

  • Page 7: Table Of Contents

    Flight manual DG-800S 0.3 Table of contents Section General (a non-approved section) Limitations (an approved section) Emergency procedures (an approved section) Normal procedures (an approved section) Performance (a partly approved section) Mass (weight) and balance (a non-approved section) Sailplane and systems description...
  • Page 8 Flight manual DG-800S Section 1 General Introduction Certification basis Warnings, cautions and notes Descriptive data Three view drawing Issued: April 1997...
  • Page 9 Flight manual DG-800S Introduction The sailplane flight manual has been prepared to provide pilots and instructors with information for the safe and efficient operation of the DG- 800S sailplane. This manual includes the material required to be furnished to the pilot by JAR Part 22.
  • Page 10 Flight manual DG-800S Warnings, cautions and notes The following definitions apply to warnings, cautions and notes used in the flight manual. Warning: means that the non observation of the corresponding procedure leads to an immediate or important degradation of the flight safety.
  • Page 11 Flight manual DG-800S Descriptive data The DG-800S is a single-seater high performance sailplane with wing flaps. Technical details 2-piece wing or 4 piece wing with parting at y=7.25m (Option). Wing tips with winglets for 15 m span (Option) Automatic hook-ups for all controls.
  • Page 12 Flight manual DG-800S Technical data Wingspan m (feet) 15 (49.2) 18 (59.1) Wing surface m² (ft²) 10.68 (115.0) 11.81 (127.1) Aspect ratio 21.07 27.42 Mean aerodynamic chord MAC m (ft) 0.734 (2.41) 0.700 (2.30) Length m (ft) 6.86 (22.5) Fuselage width m (ft) 0.62 (2.03)
  • Page 13 Flight manual DG-800S 3 view drawing Issued: April 1997...

  • Page 14: Limitations (An Approved Section)

    Flight manual DG-800S Section 2 Limitations Introduction Airspeed Airspeed indicator markings Weight Centre of gravity Approved manoeuvres Manoeuvring load factors Flight crew Kinds of operation 2.10 Minimum equipment 2.11 Aerotow and winch- and autotow - launching 2.11.1 Weak links 2.11.2 Towing cable 2.11.3 Max.
  • Page 15 Flight manual DG-800S Introduction Section 2 includes operating limitations, instrument markings and basic placards necessary for safe operation of the sailplane DG-800S, standard systems and standard equipment. The limitations included in this section have been approved by the LBA. Issued: April 1997...
  • Page 16 Flight manual DG-800S Airspeed Airspeed limitations and their operational significance are shown below: Speed (IAS) Remarks km/h (kts.) VNE Never exceed Do not exceed this speed in any speed (146) operation and do not use more Flap settings than 1/3 of control deflection.
  • Page 17 Flight manual DG-800S Airspeed Indicator Markings Airspeed indicator markings and their colour code significance are shown below: Marking (IAS) value or Significance range km/h (kts.) White Arc - 190 Positive Flap Operating Range (47.5 - 103) (lower limit is maximum weight 1.1 VSO in landing configuration.
  • Page 18 Flight manual DG-800S Mass (weight) Maximum take-off mass: with waterballast : 525 kg (1157 lbs.) without waterballast: W=WNLP + Wwings WNLP = max. mass of all non lifting parts see below Wwings = actual mass of the wings Maximum landing mass: 525 kg (1157 lbs.) Caution: It is recommended to dump the waterballast before landing on airfields.
  • Page 19 Installation for removable trim ballast see sect. 7.13.1. 2. If the DG-800S is equipped with a provision to install a battery in the fin (Option) the battery (mass 4.3 kg (9.5 lbs.)) can be taken out and another battery be installed in the baggage compartment.
  • Page 20 Flight manual DG-800S Kinds of operation A) With waterballast 1. Flights according to VFR (daylight) 2. Aerotow 3. Winch- and auto-launching B) Only without waterballast 1. Cloud flying (daylight): permitted when properly instrumented (see below). 2. Simple aerobatics see sect. 4.5.8.
  • Page 21 Flight manual DG-800S 2.11 Aerotow, winch and autotow launching 2.11.1 Weak links max. 6800 N (1500 lbs.) recommended 6000 N + 10% (1320 lbs. + 10%) 2.11.2 Length of the towing cable for aerotow 30-70 m (100 - 230 ft) Material: hemp- or plastic fibres 2.11.3 Max.
  • Page 22 Flight manual DG-800S 2.14.2 Fin tank Warning: As it is dangerous to fly with empty wing tanks while ballast is resting in the fin, it is prohibited to fill water into the fin tank if there is any risk of icing. The flight conditions must comply with the following table.
  • Page 23 Flight manual DG-800S 2.15 Limitations placards DG Flugzeugbau GmbH type: DG 800S year of construction serial no: Maximum airspeeds km/h kts. Winch launch Aero-tow Manoeuvring V Rough air Max. flap extended speed +13° +10 +5° Landing gear operating Maximum speed V Max.

  • Page 24: Emergency Procedures (An Approved Section)

    Flight manual DG-800S Section 3 Emergency procedures Introduction Canopy jettison 3.3. Bailing out Stall recovery Spin recovery Spiral dive recovery Recovery from unintentional cloud flying Flight with asymmetric waterballast Emergency wheel up landing 3.10 Ground loop 3.11 Emergency landing in water Issued: April 1997 App.
  • Page 25 Flight manual DG-800S Introduction Section 3 provides a checklist and amplification for coping with emergencies that may occur. Emergency situations can be minimized by proper pre-flight inspections and maintenance. Canopy jettison To bail out open the red canopy emergency release handle. The white canopy opening handle will be opened automatically.
  • Page 26 Flight manual DG-800S Caution: To prevent unintentional spinning do not stall the sailplane. Fly with enough speed reserve especially in gusty conditions and in the landing pattern. Intended spins with waterballast are not permitted. Height loss during recovery up to m 150 ft 500 max.
  • Page 27 Flight manual DG-800S Flight with asymmetric waterballast If you suspect that the waterballast does not dump symmetrically you have to close the dump valves of the wingtanks immediately, to avoid greater asymmetry. Asymmetry can be verified by the necessary aileron deflection in straight flight at low airspeeds.

  • Page 28: Normal Procedures (An Approved Section)

    Flight manual DG-800S Section 4 Normal procedures Introduction Rigging and derigging, filling the watertanks, 4.2.1 Rigging 4.2.2 Filling the watertanks 4.2.3 Filling the fin watertank 4.2.4 Derigging 4.2.5 Rigging and derigging the wing tip extensions Daily Inspection Pre-flight Inspection Normal procedures and recommended speeds 4.5.1 Tow launch...
  • Page 29 Flight manual DG-800S Introduction Section 4 provides checklist and amplification procedures for the conduct of normal operation. Normal procedures associated with optional systems can be found in section 9. Rigging and derigging, filling the watertanks, 4.2.1 Rigging 1. Open the canopy.
  • Page 30 Flight manual DG-800S Check for correct elevator connection by looking through the Plexiglas window at the upper surface of the stabilizer. 5. Tape the gaps of the wing-fuselage junction. 6. Positive control check. 4.2.2 Filling the watertanks First open the handle for the fin tank and then pull back the handle for the right tank (top handle).
  • Page 31 Flight manual DG-800S 4.2.3 Filling the fin waterballast tank Determine the amount see sect. 6. Connect the transparent plastic filling hose via the hose connector GS 12 to the hose which comes out of the left rear end of the fuselage.
  • Page 32 Flight manual DG-800S Daily Inspection Please keep in mind the importance of the inspection after rigging the glider and respectively each day prior to the first take off. It is for your safety. Caution: After a heavy landing or if other high loads have been subjected to your sailplane, you must execute a complete inspection referring to maintenance manual sect.
  • Page 33 Flight manual DG-800S B Inspection after rigging. Walk around the aircraft 1. All parts of the airframe a) check for flaws such as bubbles, holes, bumps and cracks in the surface b) check leading -and trailing edges of the wings and control surfaces for cracks 2.
  • Page 34 Flight manual DG-800S 5. Left wing a) check locking of the wing tip (option) b) check flaperon for excessive free play c) check drives on the flaperons for tight screwed connection d) check airbrake- and box and control rod for wear and free play. It must be possible to retract the airbrake, even if it is pressed rearwards.
  • Page 35 Flight manual DG-800S Pre-flight inspection 1. Lead ballast (for under weight pilot)? 2. Fin ballast tank emptied or correct amount filled in? 3. Battery in the fin? Loading chart regarded? 4. Parachute worn properly? 5. Safety harness buckled? 6. Seat back and pedals adjusted? 7.
  • Page 36 Flight manual DG-800S Normal procedures and recommended speeds 4.5.1 Tow launch Due to the towhook position in the middle of the fuselage (underside) and due to the excellent effectiveness of the ailerons and rudder, the possibility of wing dropping or ground loops, even on a slow starting aerotow is reduced.
  • Page 37 Flight manual DG-800S Winch launch (only allowed at the C.G. release) Set the wing flaps to +13°. Set the trim nose down for a winch launch. Use the normal winch launch procedure. After reaching 60 m (200 ft) gradually pull back on the stick so that the glider will not pick up excessive speed.
  • Page 38 When stalled with flap setting neutral or negative the DG-800S will continue to fly level. If the stick should be pulled further the DG-800S will drop the nose or one wing. During the stall a large angle of attack will be reached.
  • Page 39 When flaring out keep the airbrake setting you were using, opening them further may drop the sailplane. You can land the DG-800S on soft fields with the landing gear extended, as there is no tendency of nosing over, if the stick is pulled backwards.
  • Page 40 Flight manual DG-800S 4.5.4 Flight with water ballast Wing tanks Recommended ballast for smooth thermals: rate of climb ballast kts. lt. U.S. gallons below 1 none 1 - 2 200- 400 2- 4 60 16 2 - 4 400- 800...
  • Page 41 Flight manual DG-800S 4.5.5 Flight at high altitude and at low temperatures With temperatures below 0°C (32°F) for instance when wave flying or flying in winter, it is possible that the control circuits could become stiffer. Special care should be taken to ensure that there is no moisture on any section of the control circuits to minimize the possibility of freeze up.
  • Page 42 (13.0 - 13.8 in) behind datum. It is not necessary to extend the dive brakes during spin recovery. The DG-800S shows a large nose down pitch after leaving spin if you are spinning more than 2 turns. So you have to flare out correspondingly.
  • Page 43 Flight manual DG-800S Stall-turn To fly a stall-turn safely, please proceed as follows: After reaching the entry speed pull back the stick quickly, but not abruptly. During the pull out, shortly before reaching the vertical flight path initiate rotation with the rudder. Push the rudder quickly, but not abruptly. Also, at the highest point of the turn, the glider should still have a positive airspeed above stalling speed.

  • Page 44: Performance (A Partly Approved Section)

    Flight manual DG-800S Section 5 Performance Introduction Approved Data 5.2.1 Airspeed indicator system calibration 5.2.2 Stall speeds Additional Information 5.3.1 Demonstrated crosswind performance 5.3.2 Gliding performance 5.3.3 Flight Polar 5.3.4 Operating the wingflaps Issued: April 1997...
  • Page 45 Flight manual DG-800S Introduction Section 5 provides approved data for airspeed calibration, stall speeds and take-off performance and non-approved additional information. The data in the charts has been computed from actual flight tests with the sailplane in good and clean condition and using average piloting techniques.
  • Page 46 Flight manual DG-800S Approved data 5.2.1 Airspeed indicator system calibration -9° IAS= indicated airspeed CAS= calibrated airspeed Caution: The airspeed indicator is to be connected to the front static ports and the pitot probe in the fuselage nose. Issued: November 2001 TN 384/8...
  • Page 47 Flight manual DG-800S 5.2.2 Stall speeds Min. airspeed in level flight. wing span 18 m Airbrakes retracted Flap weight setting 1058 1157 lbs. km/h kts. +13° km/h kts. 0° km/h kts. -9° km/h kts. Airbrakes extended Flap weight setting 1058 1157 lbs.
  • Page 48 Flight manual DG-800S 5.2.2 cont. wing span 15 m Airbrakes retracted Flap weight setting 1058 1157 lbs. km/h kts. +13° km/h kts. 0° km/h kts. -9° km/h kts. Airbrakes extended Flap weight setting 1058 1157 lbs. km/h kts. +13° km/h kts.
  • Page 49 Flight manual DG-800S Additional Information 5.3.1 Demonstrated crosswind performance The demonstrated crosswind velocity is 15 km/h (8 kts.) according to the airworthiness requirements. 5.3.2 Gliding performance (data evaluated by comparison flights) Performance data with 15 m span (S = 10.68 m²) Wing loading kg/m²...
  • Page 50 Flight manual DG-800S 5.3.3 Flight polar Issued: April 1997...
  • Page 51 Flight manual DG-800S 5.3.4 Operating the wing flaps The following flap settings should be used for optimum performance for the speed ranges and wing loadings specified: Speeds in km/h wing span 18 m mass (kg) +13° up to 70 - 73...

  • Page 52: Mass (Weight) And Balance

    Flight manual DG-800S Section 6 Mass (weight) and balance Introduction Weighing procedures Weighing record Basic empty mass and C.G. Mass of all non-lifting parts Max. mass Useful loads Loading chart C.G. calculation Issued: April 1997...
  • Page 53 Weighing procedures See maintenance manual DG-800S sect. 5. Datum: Wing leading edge at the rootrib. Reference line: aft fuselage centre line horizontal. If there is a provision to install a battery in the fin the weighing is to be executed with this battery (part No.
  • Page 54 Flight manual DG-800S Max. mass (weight) Maximum Take-off mass: 525 kg, 1157 lbs. Max. mass without waterballast: W=WNLP + Wwings WNLP = max. mass of all non lifting parts see 6.5 Wwings = actual mass of the wings Maximum landing mass: 525 kg, 1157 lbs.
  • Page 55 Flight manual DG-800S Loading chart Cockpit load see table on page 6.5. With lower pilot weight necessary ballast must be added in the seat. Ballast put on the seat (lead ballast cushion) must be fastened at the connections of the safety belts.
  • Page 56 Flight manual DG-800S Weighing report (for 6.3) Distances in mm, masses in kg 25.4 mm = 1 inch 1 kg = 2.2046 lbs. Date of weighing: executed by: Date of equipment list: empty 15 m mass 18 m empty 15 m mass C.G.
  • Page 57 Flight manual DG-800S for 6.4 Empty weight C.G. limits 25.4 mm = 1 in., 1 kg = 2.2046 lbs. Issued: April 1997...
  • Page 58 Flight manual DG-800S DG-800S ballast chart (for 6.8) To determine the max. allowable waterballast in the wing tanks. This diagram is valid for the max T.O.W. of 525 kg (1157 lbs.). 1 kg = 2.2046 lbs. 3.785 kg (l) = 1 US gal.
  • Page 59 Flight manual DG-800S DG-800S ballast chart (for 6.8) to determine the max. amount of ballast in the fin tank. Curve 1 = ballast in the wing tanks Curve 2 = total ballast (wing tanks and fin tank) Example: From the diagram on page 6.7 a max. allowable ballast of 134 kg (wings + fintank) was determined.
  • Page 60 Flight manual DG-800S C.G. calculation The actual C.G. can be determined as follows: For each item, the moment mass x C.G. has to be determined and to be summed up and divided by the total mass. See the following example: 1 kg = 2.2046 lbs.
  • Page 61 Flight manual DG-800S If the actual pilot C.G. is not known, you have to take the values from the following table: flight: near the forward C.G. near the aft C.G. pilot C.G. (m) pilot C.G. (m) Pilot mass (kg) -0.582 -0.533...

  • Page 62: Sailplane And Systems Description (A Non-Approved Section)

    Flight manual DG-800S Section 7 Sailplane and systems description 7.1 Introduction 7.2 Airframe 7.3 Cockpit, cockpit controls and placards 7.4 Flight controls 7.5 Airbrake system 7.6 Landing gear system 7.7 Tow hooks 7.8 Seats and safety harness 7.9 Baggage compartment 7.10 Water ballast system...
  • Page 63 M.M. = Maintenance manual Airframe The DG-800S is a single-seater high performance sailplane with 18 m wing span. As an option wings can be equipped with a parting device at y = 7.25 m, and with winglets for flying with 15 m span.
  • Page 64 Flight manual DG-800S Cockpit, cockpit controls and placards Issued: April 1997...
  • Page 65 Flight manual DG-800S Control Column - Parallelogram type Release lever for the trim mechanism - green. Operation see sect. 7.4. Trim position indicator and trim preselection lever Tow release knob - yellow. Rudder pedal adjustment knob - black By pulling on the knob, the locking pin will be disengaged and the rudder pedals can be pulled back towards the pilot or pushed forward away from the pilot.
  • Page 66 The head rest is integrated in the back rest to take up the rebound forces of the pilots head in the case of a crash landing. Warning: If the DG-800S shall be flown without back rest, a separate headrest (Option) must be installed.
  • Page 67 If this is not enough, you can in addition push forward the trim indicator (release lever operated). It is possible to fly the DG-800S with the trim released. A rubber cord connects the wingflap control with the trim system (see maintenance manual sect.
  • Page 68 The head rest is integrated in the back rest to take up the rebound forces of the pilots head in the case of a crash landing. Warning: If the DG-800S shall be flown without back rest, a separate neckrest (Option) must be installed.
  • Page 69 Flight manual DG-800S 7.10 Waterballastsystem see diagram 5 M.M. a) The wingtanks are constructed as double wall bags with a capacity of 60 l (15.85 U.S.gal) or 87 l (23 U.S. gal) per wing. The 87 l tanks are separated in 2 chambers to reduce the pressure load in case of spinning and positive g-loads.
  • Page 70 Flight manual DG-800S 7.12 Canopy emergency release For emergency release only, the red handle at the canopy is to be operated. By this action the canopy opening lever will also be operated and a hook at the rear canopy lock will be rotated underneath the fuselage part of the canopy frame.
  • Page 71 Flight manual DG-800S 7.13. 2 Oxygen system Oxygen bottle installation Max. size of oxygen bottle is 4 l capacity with diameter 100 mm (3.94 in.). The bottle must be fixed at its neck with a bracket part No. Z 14.

  • Page 72: Sailplane Handling, Care And Maintenance (A Non-Approved Section)

    Flight manual DG-800S Section 8 Sailplane handling, care and maintenance 8.1 Introduction 8.2 Inspection periods and maintenance 8.3 Alterations or repairs 8.4 Parking 8.5 Trailering 8.6 Towing on the ground 8.7 Cleaning and care Issued: April 1997...
  • Page 73 External loads such as external camera installations are to be regarded as alterations! Repair instructions can be found in the DG-800S repair manual. No repairs should be carried out without referring to the manual. Tie Down, Parking Use textile ropes or straps to tie down the wing tips.
  • Page 74 Flight manual DG-800S Water ballast can be left in the wings, for a few days only, but not when there is the possibility for freezing! On sunny days the cockpit should be closed and covered. Note: Longer parking with exposure to sun and humidity will cause premature ageing of the skin of your sailplane.
  • Page 75 Flight manual DG-800S Towing on the ground a) by towing at the tow hook using a rope with the standard double ring authorized for the release. b) by using a tow bar which is to be fixed to the tail dolly and a wing tip wheel.
  • Page 76 Flight manual DG-800S - Protect the surface from intense sunlight. - Protect the aircraft from water and moisture. See sect. 8.4 and 8.5 - Remove water that has entered and allow the aircraft to dry out. - Never store your wet aircraft in a trailer.

  • Page 77: Supplements

    Flight manual DG-800S Section 9 Supplements Introduction List of inserted supplements Winglets at the 18m wingtips Emergency bail-out aid NOAH Issued: January 2003 TN 384/9...
  • Page 78 Flight manual DG-800S Introduction This section contains the appropriate supplements necessary to safety and efficiently operate the sailplane when equipped with various optional systems and equipment not provided with the standard sailplane. List of inserted supplements Date of Document No. Title of the inserted supplement...
  • Page 79 Flight manual DG-800S Winglets at the 18m wingtips Section 1 Introduction In the following text the changes to those sections of the flight manual which are effected by the installation of winglets at the 18m wingtips will be given Brief description In addition to the wing configurations described in sections 1 up to 8 of the flight manual winglets at the 18m wingtips are approved.
  • Page 80 Flight manual DG-800S Emergency bail-out aid NOAH Section 1 Introduction In the following text the changes to those sections of the flight manual which are effected by the installation of winglets at the 18m wingtips will be given Brief description NOAH is a system to facilitate the bail-out of the cockpit in an emergency.
  • Page 81 Flight manual DG-800S Section 3 Use of NOAH in case of an emergency bail out: Note: We recommend strongly the use of an automatic parachute. Only with an automatic parachute will the bail out procedure be nearly automatic and precious time and altitude can be saved.
  • Page 82 Flight manual DG-800S Section 7 The NOAH actuation handle is located at the right hand side abeam the control stick, it is marked black and yellow. NOAH A sticker is wrapped around the actuation handle and the guiding airbag tube for the actuation cable. The sticker serves as an additional means to guard against inadvertent operation.