DG Flugzeugbau DG-800B Flight Manual Download Page 3

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Flight manual DG-800B

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Summary of Contents for DG-800B

Page 1: ... all warnings caution remarks and notes given in the manuals Never take off without executing a serious pre flight inspection according to the flight manual Never take off with a motorglider without checking the max engine RPM and the ignition circuits Always respect the relevant safety altitudes With a motorglider never rely completely on the engine extending and starting Plan your flight path so...

Page 2: ...ÄM 800 9 99 June 1999 July 13 99 7 0 5 7 8 Manual revision TN 873 16 Sept 1999 Nov 01 99 Issued see last item 0 1 Flight manual DG 800B Rev No Affected Pages section Description Issue Date LBA Approval Date Inserted Date Signature 8 0 4 0 5 4 8 4 9 7 14 Hydraulic disc brake TN 873 17 Option October 1999 Nov 1 1999 9 0 4 4 4 4 5 Permanently installed refuelling pump Option pump control from ser no ...

Page 3: ...4 2 App 4 3 Issued February2001 TN 873 23 0 3 Flight manual DG 800B 0 2 List of effective pages cont Section page issued replaced replaced App 4 4 Nov 97 Febr 99 Nov 99 4 5 Febr 99 Nov 99 4 6 4 7 4 8 Oct 99 4 9 Febr 99 Oct 99 4 4 10 Febr 99 4 11 4 12 Dec 97 Febr 99 May 00 Dec 00 4 13 Nov 97 Febr 99 Dec 00 4 13a Febr 99 Dec 00 4 14 Febr 01 4 15 4 16 4 17 4 18 June 1999 4 19 Dec 00 4 20 Febr 99 Dec ...

Page 4: ...ov 97 Febr 99 7 17 7 18 8 8 1 8 2 Febr 99 8 3 8 4 8 6 8 5 8 7 9 9 1 Issued December 2000 ÄM 800 13 00 0 5 Flight manual DG 800B 0 3 Table of contents Section General a non approved section 1 Limitations an approved section 2 Emergency procedures an approved section 3 Normal procedures an approved section 4 Performance a partly approved section 5 Mass weight and balance a non approved section 6 Sai...

Page 5: ...nished to the pilot by JAR Part 22 It also contains supplemental data supplied by the motorglider manufacturer 1 2 Certification basis This type of motorglider has been approved by the Luftfahrt Bundesamt LBA in accordance with Airworthiness requirements JAR Part 22 sailplanes and powered sailplanes Change 4 issued 27th June 1989 Noise requirements Chapter VI LSL BAZ announcement issued March 19th...

Page 6: ...h Winglets for 15 m span Option Removable Winglets for 18 m span Option Automatic hook ups for all controls Comfortable seating and modern cockpit design safety cockpit Large canopy for very good inflight vision Draught free canopy demist and adjustable direct ventilation Sealed airbrake and landing gear boxes Retractable main wheel spring mounted Steerable tailwheel All controls including the eng...

Page 7: ...empty weight wings without parting appr kg lbs 335 739 empty weight Wings with parting appr kg lbs 334 736 338 745 Wing loading with 80 kg 176 lbs payload appr kg m lbs ft 38 8 7 95 35 4 7 25 a Tow launch max weight kg lbs 525 1157 525 1157 max wing loading kg m lbs ft 49 2 10 08 44 5 9 11 b Self launch max weight kg lbs 480 1058 525 1157 max wing loading kg m lbs ft 44 9 9 20 44 5 9 11 Issued Dec...

Page 8: ...g 2 14 1 Weak links 2 14 2 Towing cable 2 14 3 Max towing speeds 2 14 4 Tow release 2 15 Cross wind 2 16 Tyre pressure 2 17 Water ballast Option 2 18 Wing fuel tanks Option 2 19 Limitations placards 2 20 Other limitations Issued November 1997 2 1 Flight manual DG 800B 2 1 Introduction Section 2 includes operating limitations instrument markings and basic placards necessary for safe operation of th...

Page 9: ...speed 190 103 Do not extend or retract the landing gear above this spee VPO Max speed to xtend and re tract the power plant 100 54 Do not extend or retract the powerplant above this speed Warning At higher altitudes the true airspeed is higher than the indicated airspeed so VNE is reduced with altitude see sect 4 5 9 Issued November 1997 App 2 3 Flight manual DG 800B 2 3 Airspeed Indicator Marking...

Page 10: ...play Max RPM When exceeding this RPM the engine speed display starts blinking Issued November 1997 App 2 5 Flight manual DG 800B 2 5 ff Coolant temperature indicator right LCD display indication digital with 3 digits limitation data printed above display red 95 C When exceeding this temperature the CHT display starts blinking Fuel quantity indicator Limitation data for the non usable amount of fue...

Page 11: ...pp 2 7 Flight manual DG 800B 2 9 Approved manoeuvres This sailplane is certified for normal gliding in the Utility category Simple aerobatics are approved but only without waterballast and with the engine retracted The following aerobatic manoeuvres are approved see sect 4 5 12 Manoeuvre recommended entry speed IAS km h kts Spins Inside Loop 180 97 Stall Turn 180 97 Chandelle climbing 180 97 2 10 ...

Page 12: ...talled airspeed indicator system may be used for cloud flying Issued November 1997 App 2 9 Flight manual DG 800B 2 14 Aerotow winch and autotow launching 2 14 1 Weak links max 6800 N 1500 lbs recommended 6000 N 10 1320 lbs 10 2 14 2 Length of the towing cable for aerotow 30 70 m 100 230 ft Material hemp or plastic fibres 2 14 3 Max towing speeds Aerotow VT 190 km h 103 kts Winch and autotow VW 150...

Page 13: ...arachute included maximum 110 kg 242 lbs minimum kg lbs Preflight inspection 1 Lead ballast for under weight pilot 2 Parachute worn properly 3 Safety harness buckled 4 Seat back and pedals adjusted 5 All controls and knobs in reach 6 Altimeter 7 Dive brakes cycled and locked 8 Wing flaps in take off position 9 Positive control check One person at the control surfaces 10 Trim 11 Canopy locked Addit...

Page 14: ...d underneath the fuselage part of the canopy frame Because of the hook the canopy will rotate about this point to leave the fuselage in a fast and safe way The canopy will be opened by a spring and blown away by the oncoming air If necessary you have to push the canopy upwards with both hands on the plexiglas 3 3 Bailing out First jettison the canopy then unlock the safety harness and bail out The...

Page 15: ...ith engine extended flaps L airbrakes as desired Insufficient runway decision based on position terrain and height close fuel cock switch off ignition and main switch engine extended reduces L D to 15 Issued November 1997 App 3 3 Flight manual DG 800B 3 8 2 Power loss during flight Push the control stick forward immediately watch the airspeed indicator Check fuel cock position fuel quantity If no ...

Page 16: ...t least every 60 seconds to supply oil to the engine Landing with the engine extended see sect 3 14 Issued February 1999 TN 873 12 App 3 5 Flight manual DG 800B 3 12 Starting the engine with the starter not working In flight Extend the engine by switching on the ignition when engine is extended increase speed as quickly as possible to approx 175 km h 95 kts until the engine starts Then flare out w...

Page 17: ...130 ft before the end of the field to execute a controlled ground loop If possible turn into the wind lift the tail by pushing the stick forward 3 18 Emergency landing on water From the experience with emergency water landing we know that it is likely that the sailplane will dive into the water cockpit first Therefore an emergency landing on water should be the last choice In the case of a water l...

Page 18: ... surface of the bolt head Issued November 1997 App 4 2 Flight manual DG 800B 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 Pull back the handle for the right tank top handle Place the right wing tip on the ground Attach the hose ...

Page 19: ...per amount of oil and fill up completely Issued November 1999 ÄM 800 10 99 App 4 4 D E F A C Flight manual DG 800B Calibration A device in the DG 800B automatically cuts off the electric power for the pump system as soon as the fuselage tank is filled and executes a calibration of the fuel gauge If you don t use a pump for filling see a or b the calibration can be done manually With full tank swit...

Page 20: ...cted to your sailplane you must execute a complete inspection refering to maintenance manual sect 2 3 prior to the next take off If you detect any damage don t operate your sailplane before the damage is repaired If the maintenance and repair manual don t give adequate information please contact the manufacturer A Inspection prior to rigging 1 Wing roots and spar ends a check for cracks delaminati...

Page 21: ...ake and cable for wear and function d Option disc brake Check the condition of the wheel brake assy and the brake hose 5 Left wing a check locking of the wing tip b check flaperon for excessive free play c check drives on the flaperons for tight srewed connection d check airbrake airbrake box and control rod for wear and free play It must be possible to retract the airbrake even if it is pressed r...

Page 22: ...correct control hook up look through the Plexiglas window c Check the securing of the front mounting bolt d Check the horizontal tail for free play e Check the TE or Multiprobe for correct insertion secured with tape 10 Right wing see detail 5 11 Fuselage nose a Check the ports for static pressure and pitot pressure for cleanliness b If the sailplane has been parked in rain you have to empty the s...

Page 23: ...ot extend the engine check the circuit breaker first Otherwise see sect 8 trouble shooting Issued December 2000 ÄM 800 13 00 App 4 12 Flight manual DG 800B e Turn the propeller min 1 rotation by hand f Switch on the ignition in the DEI the engine will be extended automatically to its operating position unless it s already in this position Listen if you can hear the electric fuel pump If you don t ...

Page 24: ...el You can reduce the radius of turn by operating the wheel brake and applying more throttle so the rudder will help to turn the aircraft Caution For taxiing always use engine speed such that the engine runs smoothly This prevents vibration damage at the engine mount On concrete it may be necessary to apply a little wheel brake to reduce taxi speed Issued December 2000 ÄM 800 13 00 App 4 13a Fligh...

Page 25: ... at safety height during the tow Normal towing speed is 120 130 km h 65 70 kts For a cross country tow the speed can be as high as 190 km h 103 kts At safety altitude you may set the flaps to a setting apprppriate to the flight speed see sect 4 5 4 Warning Aerotow with high take off weight requires a powerful tow plane Many tow planes are not certified to tow gliders with high take off weights Red...

Page 26: ...is with the so called sawtooth technique After climb with Vy retract the engine and glide with airspeed according to the Mc Cready theory flying slowly in lift and faster in sinking air The medium cruise speed achieved by sawtooth technique is not much less than for level engine on cruise but the range will be more than doubled Performance data see sect 5 3 5 2 and 5 3 5 4 Utilisation of the wing ...

Page 27: ...800B 4 5 6 2 Extension and starting the engine in flight 1 With the engine extended but not running the rate of sink at 90 km h 49 kts increases to 2 m sec 395 ft min Therefore restarting the engine should only be done over landable terrain and not below 400 m 1320 ft above ground But it is bet ter to restart the engine at 200 m 660 ft over a landable field rather than at 400 m 1320 ft over a fore...

Page 28: ...ocking over center next time Simply hosing with water is the best cleaning method 4 5 7 2 Landing with the engine extended and stopped See emergency procedures sect 3 14 Land with the engine extended only if the engine can t be retracted 4 5 7 3 Landing with the landing gear retracted Wheel up landing is not recommended see emergency procedures sect 3 16 After wheel up landing check the fuselage b...

Page 29: ...of the control circuits to minimize the possibility of freeze up It could be advantageous to apply vaseline along all the edges of the airbrake cover plates to minimize the possibility of freezing closed Apply the controls in short periods It is not allowed to carry waterballast Issued November 1997 App 4 23 Flight manual DG 800B Caution 1 At temperatures below 20 C 4 F there is the risk of cracki...

Page 30: ...ecovering from the spin Apply full opposite rudder pause then ease stick forward After the spin has stopped neutralize the controls and carefully pull off excess speed Height loss during recovery is up to 150 m 490 ft the max speed is 190 km h 103 kts Issued November 1997 App 4 25 Flight manual DG 800B 4 6 Flight with the engine removed from the aircraft The DG 800B can be flown without the engine...

Page 31: ...Flight Polar 5 3 4 Operating the wingflaps 5 3 5 Performance under power 5 3 6 Noise data Issued November 1997 App 5 1 Flight manual DG 800B 5 1 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 con...

Page 32: ...etracted Flap weight setting 340 370 400 440 480 525 kg 750 816 882 970 1058 1157 lbs L 61 63 66 69 72 76 km h 33 34 36 37 39 41 kts 8 62 64 67 70 73 77 km h 33 35 36 38 39 42 kts 0 65 68 71 74 77 82 km h 35 37 38 40 42 44 kts 14 71 74 77 80 84 88 km h 38 40 42 43 45 48 kts Airbrakes extended Flap weight setting 340 370 400 440 480 525 kg 750 816 882 970 1058 1157 lbs L 67 70 73 76 80 84 km h 36 3...

Page 33: ...nd proper condition of engine propeller and aircraft The take off procedure is to be executed according to 4 5 2 SR take off roll S take off distance to 15 m 50 ft altitude T temperature on ground H pressure altitude can be computed as follows H m QNH 1013 mb D 100 11 7 airfield elevation m 18m span m 440 kg m 525 kg H m T C SR m S m SR m S m 0 0 110 174 157 240 15 123 193 175 267 30 136 214 194 2...

Page 34: ... 8 2 10 0 min sink rate m s 54 57 61 68 1 ft min 106 112 120 134 at V km h 73 77 83 92 2 kts 39 42 45 50 best glide ratio 44 8 45 0 45 2 45 8 at V km h 98 103 110 122 kts 53 56 59 66 Performance data with 18 m span S 11 81 m Wing loading kg m 30 35 40 44 5 lbs ft 6 1 7 2 8 2 9 1 min sink rate m s 47 51 54 57 ft min 93 100 106 112 at V km h 72 77 83 87 kts 39 42 45 47 best glide ratio 49 8 50 50 2 ...

Page 35: ...83 VNE Speeds in kts wing span 18 m mass lbs 750 816 880 970 1060 1157 8 up to 38 39 41 43 45 47 5 38 43 39 45 41 46 43 49 45 51 47 53 0 43 48 45 50 46 51 49 54 51 56 53 59 5 48 64 50 67 51 70 54 73 56 76 59 79 10 64 76 67 79 70 83 73 86 76 90 79 94 14 76 79 83 86 90 94 VNE wing span 15 m mass lbs 750 816 880 970 1060 1157 8 up to 40 42 43 45 48 50 5 40 45 42 47 43 49 45 51 48 53 50 56 0 45 50 47 ...

Page 36: ...zzle in the carburettor may be set to a smaller fuel flow in accordance with the engine manufacturer 5 3 5 4 Maximum Range without reserve Take off mass 440 kg 970 lbs wingspan 18 m 1 At cruising speed with full fuselage tank 22 l 5 8 US gal 205 km 111 nm This is 9 3 km l 19 1 nm US gal 2 With sawtooth flight technique Mc Cready O with full fuselage tank 22 l 5 8 US gal max 530 km 286 nm This is 2...

Page 37: ...rence line aft fuselage centre line horizontal Execute the weighing with the powerplant retracted and all tanks emptied 6 3 Weighing record The result of each C G weighing is to be entered on page 6 5 If the min cockpit load has changed this data is to be entered in the cockpit placard as well When altering the equipment the new data can be gathered by a C G calculation see sect 6 9 The actual equ...

Page 38: ...cushion must be fastened at the connections Removable Ballast Option see sect 7 16 1 Baggage max 15 kg 33 lbs Heavy pieces of baggage must be secured to the baggage compartment floor The max mass secured on one half of the floor left and right of fuselage centre line should not exceed 7 5 kg 16 5 lbs The total load in the fuselage must not exceed the max load without waterballast given in the tabl...

Page 39: ...max mass 18 m without W B 15 m max load 18 m without W B 15 m max load 18 m with W B tow launch 15 m self launch 15 m cockpit min load max 110 Inspector signature stamp Issued November 1997 6 5 Flight manual DG 800B for 6 4 Empty weight C G limits Engine installed retracted 25 4 mm 1 in 1 kg 2 2046 lbs Issued November 1997 6 6 cockpit load aft C G limits empty weight C G range forward C G limit em...

Page 40: ...W of 525 kg 1157 lbs 1 kg 2 2046 lbs 3 785 kg l 1 US gal Issued November 1997 6 7 Flight manual DG 800B 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 480 kg 1058 lbs for self launching with 15 m wing span 1 kg 2 2046 lbs 3 785 kg l 1 US gal Issued November 1997 6 8 ...

Page 41: ... as it may change due to deflection of the landing gear The pilot C G can be determined by the following equation XP XSF E MF XSE E ME MP MF flight mass XSF flight C G MP pilot mass ME empty mass XSE empty C G Issued November 1997 6 9 Flight manual DG 800B 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 ...

Page 42: ... of the powered sailplane and its systems Refer to section 9 Supplements for details of optional systems and equipment M M Maintenance manual 7 2 Airframe The DG 800B is a singleseater high performance motorglider with 18 m wing span and with retractable powerplant Construction Wings and flaperons CFRP foam sandwich skin CFRP Rovings Elevator CFRP AFRP hybrid skin Horizontal tailplane and rudder G...

Page 43: ...cking pin will be disengaged and the rudder pedals can be pulled back towards the pilot or pushed forward away from the pilot 6 Instrument Panel After removing the side screws at the base 2 x M 6 and after removing the screws attaching the cover to the panel 4 x M 4 the cover can be removed towards the front 7 Compass installation position 8 Radio installation position 9 Undercarriage retraction e...

Page 44: ...charging the batteries at the main bulkhead Only live with main switch on 24 12 V socket for the electric fuel pump system part no Z02 2 A built in device automatically switches off the current to this socket as soon as the fuselage tank is full Only live with engine master switch 36 on With a permanently installed fuel pump Option Instead of this socket a switch located close to socket 23 is inst...

Page 45: ...ror to watch the propeller during aligning procedure Issued December 2000 ÄM 800 13 00 7 7 off Propeller auto brake zu Brandhahn auf closed fuel cock open Primer auto off Propeller brake Flight manual DG 800B 33 Fuses a Circuit breaker for the engine extension retraction motor b Circuit breaker 4 A for the DEI the fuel pump and the coolant pump c Circuit breaker 10 A for the generator the control ...

Page 46: ...44 45 46 35 Flight manual DG 800B 40 Control light engine extended green flashing light shines when the engine is extended The light stops shining as soon as the engine RPM exceeds 1200 RPM 41 Test switch for the two ignition circuits test Switch in the middle I II both ignition circuits activated Switch to the left I No I ignition circuit activated Switch to the right II No II ignition circuit ac...

Page 47: ...s button 48 while switching on switch 36 Issued February 1999 TN 873 12 7 11 Flight manual DG 800B 50 Display for the engine speed a engine speed RPM x 10 With option EGT see also 46 e g 6 0 2 means 6020 RPM engine speed When exceeding the max continuous engine speed of 6300 RPM a blinking double point will appear in front of the last digit e g 6 3 1 When exceeding the max engine speed of 6600 RPM...

Page 48: ...e in maintenance free nylon ball guides Automatic control hook up system Issued November 1997 7 13 Flight manual DG 800B 7 6 Landing gear See diagram 2 M M a Main wheel retractable assisted by a gas strut spring mounted fully sealed landing gear box internal drum brake Tyre 5 00 5 4 PR or 6 PR Diameter 362 mm 14 25 in Tyre pressure 3 5 bar 51 psi Drum brake hydraulic disc brake as an option b Tail...

Page 49: ... line A pressure valve is installed in each line to avoid inadvertent spillage of fuel The valve opens if the fuel pressure exceeds 0 1 bar 1 5 psi 7 12 4 Coolant pump Electric pump controlled via the ignition switch installed at the fire wall in the front left edge of the engine bay Note for 7 12 2 and 7 12 4 The fuel pump and the coolant pump receive their electric power from the batteries and i...

Page 50: ...to hold the canopy one at the nose the other at the rear The emergency release locking mechanism should be in the open position Place the canopy on the hinge and press down Relocate the locking mechanism Push the hook forwards at the rear canopy lock until it snaps in Issued November 1997 7 17 Flight manual DG 800B 7 16 Miscellaneous equipment 7 16 1 Removable Ballast Option Three lead ballast wei...

Page 51: ... the control surface displacements adjustments and general condition must be checked See the maintenance manual 8 3 Alterations or repairs It is essential that the responsible airworthiness authority be contacted prior to any alterations on the airplane to ensure that the airworthiness of the sailplane is not impaired It is prohibited to execute the alteration without the approval of the airworthi...

Page 52: ...uthorized for the release b by using a tow bar which is to be fixed to the tail dolly and a wing tip wheel The tow bar and wing tip wheel may be ordered through the DG factory 8 7 Cleaning and Care Exterior surfaces of the fibrereinforced plastic parts The surfaces are coated by a UP gelcoat or by PUR paint Option This gelcoat is protected by a hard wax coating which has been applied during produc...

Page 53: ... work Brake pad worn away too far so that the lever of the brake motor reaches it s stop Adjust brake cable or install a new brake pad according to maintenance manual sect 1 11 9 does not apply for version with band brake Brake motor doesn t work brake motor or proximity switch defective or DEI failure 2 Engine starting problems Refer to flight manual sect 4 5 1 2 3 Starter motor doesn t work Limi...

Page 54: ...x defective if after interchanging the boxes with the other ignition circuit the trouble appears on the other ignition circuit if not armature plate in the engine or cables may be defective on none of the spark plugs too low starting r p m weak battery shorting cable or ignition switch having ground connection cable defective If after interchanging the boxes with the other ignition circuit one cir...

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