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DG Flugzeugbau GmbH
Otto-Lilienthal-Weg 2 / Am Flugplatz • • D-76646 Bruchsal • • Germany
Postfach 1480, D-76604 Bruchsal • • Germany
Tel. +49 (0) 7251/3020-100 • • Fax +49 (0) 7251/3020-200 • • eMail: dg@dg-flugzeugbau.de
Spareparts and Materials: Tel. +49 (0) 7251/3020-270 • • eMail: lager@dg-flugzeugbau.de
http://www.dg-flugzeugbau.de
F L I G H T M A N U A L
F O R T H E
S A I L P L A N E S
LS8-s
A N D
Type:
LS8-a
Versions:
LS8-s
LS8-sb
TCDS No.:
EASA TCDS No. A.047
Serial-No.:
__________________________
Registration Signs:
__________________________
Edition:
April 2005
Pages marked "EASA-approved" are approved by:
(Signature)
(Authority)
(Stamp)
(Date of Approval)
19.August 2005
This sailplane is to be operated in compliance with information and
limitations contained herein.
LS8-sb
Warnings
• Each sailplane is a highly complex unit. It may threaten your health or
endanger your life, when being used improperly or outside its approved
operating range or being maintained improperly.
• Before using the plane, study all manuals thoroughly. Especially take note of
warnings, cautions and notes provided.
• Never fly without a thorough pre-flight check according to the Flight
Manual!
• Always stay within safety altitudes.
• Always make sure to be able to perform a safe out landing.
• Respect stall speeds. Always use a safety margin above the stall speed
related to the flight condition, especially at low altitudes and in the
mountains.
• Only use battery chargers specified in the Manual.
• Do not work on control systems apart from lubrication.
• Maintenance and repairs should only be accomplished by the manufacturer
or at certified repair stations rated for these types of work. A list of stations
with experience at LS aircraft may be obtained from DG Flugzeugbau.
• Even if no annual inspections are required in your country, have your aircraft
checked annually, see Maintenance Manual chapter 2
• Please pay attention to our web-site www.dg-flugzeugbau.de. There you will
find the latest technical notes and service information for your glider:
www.dg-flugzeugbau.de/tech-mitteilungen-e. The „DG Pilot Info" informs
you immediately by e-mail about the publication of new technical notes and
service information. If you don't receive this info service, please send a mail
to weber@dg-flugzeugbau.de with subject "DG Newsletter please" to
receive this service free of charge.
.
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Summary of Contents for Rolladen-Schneider LS8-s
- Page 1 S A I L P L A N E S related to the flight condition, especially at low altitudes and in the mountains. • Only use battery chargers specified in the Manual. LS8-s LS8-sb • Do not work on control systems apart from lubrication. A N D •...
- Page 2 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Contents Contents 0.2 List of Effective Pages ANUAL ONTENTS 0.1 Log of Revisions Chapter Page Edition Edition Edition Edition Titel page April 2005 Any revision of the present manual, except actual weighing data, must be...
- Page 3 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Contents Contents 0.2 List of Effective Pages continued 0.2 List of Effective Pages continued Chapter Page Edition Edition Edition Edition Chapter Page Edition Edition Edition Edition 4-21 April 2005 April 2005...
- Page 4 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Contents Contents 0.2 List of Effective Pages continued 0.3 T ABLE OF ONTENTS Chapter Page Edition Edition Edition Edition April 2005 Section Chapter Approval Status April 2005 April 2005 1 General ................not approved...
- Page 5 JAR Part 22. It also contains supplementary data supplied by the sailplane manufacturer. 1.2 Certification Basis............. The LS8-s or LS8-sb is a high performance sailplane, not a basic trainer. 1.3 Warnings, Caution and Notes (Definitions) ....However excellent its design, construction, performance and handling qualities, flying it requires a skilled pilot, who observes the limitations and 1.4 Descriptive and Technical Data .........
- Page 6 They may be operated in 15m or 18m span and winglets in both versions. procedure leads to an immediate or important The fuselage structure of LS8-s and LS8-sb is different, because the degradation of the flight safety. LS8-sb is prepared for later engine installation. Otherwise both planes are structurally identical.
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Page 7: Table Of Contents
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb General Limitations 1.5 T HREE RAWING IMITATIONS Contents of Chapter 2: 2 Limitations ..............2-1 2.1 Introduction ............2-2 2.2 Airspeeds (IAS) ............2-3 2.3 Airspeed Indicator colour markings ......2-4 2.4 Mass (Weight) ............ -
Page 8: Limitations
Maximum permissible speed km/h Kt Remarks placards necessary for safe operation of the LS8-s and LS8-sb sailplanes, Never exceed speed in Do not exceed this speed in any their standard systems and standard equipment. calm air and up to an... -
Page 9: Airspeed Indicator Colour Markings
280 km/h Maximum speed for all not restricted operations LS8-s: Maximum weight of non-lifting parts ..255 - 263 kg <562 – 580 lbs> 151 Kt LS8-sb: Maximum weight of non-lifting parts ..280 - 288 kg <617 – 635 lbs>... -
Page 10: Centre Of Gravity Limits
4.7.10.5 . Tail fin water ballast (depending on wing water ballast) LS8-s with integral tail fin tank ......max. 12 kg <26,5 lbs> LS8-sb with integral tail fin tank ......max. 7,5 kg <16,5 lbs>... -
Page 11: Approved Manoeuvres
PPROVED MANOEUVRES ATEGORY OF IRWORTHINESS LIGHT The sailplanes LS8-s and LS8-sb are approved for normal soaring flight Maximum cockpit load (category "Utility") . (Pilot + parachute + baggage + temporary equipment, batteries in baggage compartment [The tail fin battery installed in the tail does not Aerobatic flight not approved. -
Page 12: Minimum Equipment
• Checklist, Type placard, Data and Loading placard, Operating placards • Operational VHF radio system, depending on national legislation requirements For Aero tow ....max. 6600 Newton <660 kg, 1455 lbs> • Flight Manual LS8-s / LS8-sb Recommended: Tost weak link No. 5, colour code blue, Additionally for cloud flying: ....rated break away load 6000 ±600N... -
Page 13: Operating Placards For Limitations
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Limitations Emergency Procedures 2.12 Further Limitations MERGENCY ROCEDURES 2.12.1 O PERATING LACARDS FOR IMITATIONS Contents of Chapter 3: 2.12.1.1 LS8-s 3 Emergency Procedures ............3-1 DG-Flugzeugbau GmbH M I N I M U M C O C K P I T L O A D:___ kg / lbs Type: LS8-s Serial No.:_______... - Page 14 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Emergency Procedures Emergency Procedures 3.2 E MERGENCY ANOPY ETISSON 3.1 I NTRODUCTION Canopy locks : pull both red handles to stops Section 3 provides checklist and amplified procedures for coping with emergencies that may occur.
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Page 15: Emergency Procedures
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Emergency Procedures Emergency Procedures 3.3 E 3.4 S MERGENCY TALL ECOVERY Canopy - jetisson Warning - slight tail shudder prior to entry - aileron effectiveness reduced by about 50% Seat harness -... -
Page 16: Spin Recovery
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Emergency Procedures Emergency Procedures 3.5 S 3.6 S ECOVERY PIRAL ECOVERY Spiral dive may occur, when the sailplane terminates spinning on its own Simultaneously: and not by pilots action. Elevator - push forward... -
Page 17: Other Emergencies
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Emergency Procedures Emergency Procedures 3.7 O (continued) THER MERGENCIES THER MERGENCIES 3.7.1 L 3.7.2 R IMITATION OF PEED LIGHT (a) expect considerable decrease of performance. (a) If there are indications, that the intended air speed will be exceeded, for... -
Page 18: Inadvertent Freezing / Icing
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Emergency Procedures Emergency Procedures (continued) (continued) THER MERGENCIES THER MERGENCIES 3.7.3 I 3.7.4 F NADVERTENT REEZING CING LIGHT WITH ASYMMETRIC ATER ALLAST OADING Water ballast in wings and tail fin Total water dumping takes about 3 minutes. -
Page 19: Emergency Landing With Landing Gear Retracted
(b) simultaneously decrease tail skid load by controlled forward stick Therefore, flights and especially winch launches in the vicinity of thunder deflection. storms should be avoided, as in important structures of the LS8-s and LS8-sb carbon fibres are used. Edition: April 2005 EASA appr. - Page 20 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures Contents of Chapter 4: (continued) ORMAL ROCEDURES 4.5.11 Winch Launch or Auto Tow ..........4-27 Contents of Chapter 4: 4.5.12 Aero Tow ................4-28 4.5.13 Free Flight ..............4-29 4 Normal Procedures ...............4-1...
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Page 21: Normal Procedures
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.1 I 4.2 R NTRODUCTION IGGING AND IGGING 1. Before rigging, remove valve openers at root ribs. Section 4 provides checklist and amplified procedures for the conduct of normal operation. -
Page 22: Installation Of Winglets
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.2 R (continued) 4.2 R (continued) IGGING AND IGGING IGGING AND IGGING 11. Check forward horizontal tail attachment for ball being fixed. 4.2.1 I <49 >... -
Page 23: Daily Inspection
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.3 D AILY NSPECTION 4.3 D (continued) AYLI NSPECTION The Daily Inspection according to the following diagram and related checklist 3 Wings must be performed each day and is essential for flight safety . - Page 24 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.3 D (continued) 4.3 D (continued) AYLI NSPECTION AYLI NSPECTION 5 Tail unit 6 Cockpit Condition, gelcoat- or structural damage, pressure marks, cracks. Canopy cleaned, if required.
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Page 25: Cockpit-Checklist
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.5 N ORMAL ROCEDURES 4.4 P LIGHT HECK 4.5.1 C (1) Daily inspection performed. OCKPIT HECKLIST (2) Control system functions checked, using a helper. (3) Vertical tail fin tank valve opening positively checked (See chapter 4, item 4.3.5). -
Page 26: Adjustment Of Rudder Pedals
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.5.2 A 4.5.4 A DJUSTMENT OF UDDER EDALS DJUSTMENT OF ACKREST (a) Possible in flight or on the ground. Warning: Adjust backrest in such way, that lower spine is well supported (b) Release pressure on pedals and unlock pawl by pulling black pedal and not bent and lap belt can be adjusted tight. -
Page 27: Retractable Landing Gear
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.5.7 T YSTEM 4.5.5 R ETRACTABLE ANDING (a) Trim lever and trim-locking lever are in separate positions. (a) Extension or retraction permitted over whole approved speed (b) Trim-locking lever is at control stick. -
Page 28: Balancing Of Pilots
When removing the tail fin battery (Standard weight 2.5 to 2.7 kg <5.5 to (d) Tail fin integral tank: 6 lbs>), Minimum Cockpit Load decreases by 10 kg <22 lbs>, see entries LS8-s: 7.5 Litres <1.98 US gallons, 1.65 Imp. gallons> in chapter 6. LS8-sb: 12 Litres <3.17 US gallons, 2.64 Imp. gallons>... - Page 29 LS8-s: 7.5 Litres <1.98 US gallons, 1.65 Imp. gallons> With wing tanks full, water leaks from the following position: LS8-sb: 12 Litres <3.17 US gallons, 2.64 Imp. gallons>...
- Page 30 159 154 149 144 139 135 130 125 120 115 = total of ......190.0 kg <419 lbs> Maximum tail tank capacity: Cockpit LS8-s (Integral tank)....12 kg <26.5 lbs> Load (Pilot Empty Mass LS8-sb (Integral tank).....7.5 kg <16.5 lbs> +Parachute + Equipm.)
- Page 31 ATER ALLAST FOR AXIMUM ATER ALLAST 575 kg <1267 lbs) EIGHT Maximum integral tail tank capacity LS8-s .......12 kg <26.5 lbs> Maximum integral tail tank capacity LS8-sb ....7.5 kg <16.5 lbs> Cockpit Load (Pilot Empty Mass +Parachute Wing water mass Total water mass Specified max.
- Page 32 ALLAST (a) Ballast lever forward = All ballast tanks –wings and tail- open. Maximum integral tail tank capacity LS8-s .......26,5 lbs <12 kg> (b) Discharge time about 3 Minutes, i.e. at 190 Litres <50.2 US gallons, Maximum integral tail tank capacity LS8-sb .....16,5 lbs <7.5 kg>...
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Page 33: Winch Launch Or Auto Tow
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.5.11 W 4.5.12 A INCH AUNCH OR (a) Trim slightly nose heavy: Trim position indicator in front of neutral- Aero tow is approved only at the nose hook. -
Page 34: Free Flight
Stalling characteristics (Straight- and banked flight) decrease. Make sure that all control surfaces are free from moisture to avoid During stalling the LS8-s and LS8-sb initially show a distinctive warning in any chance of freezing solid. the form of tail buffeting. When the elevator is pulled further, stalling To avoid air brake covers freezing solid in wing cut-outs, use vaseline along symmetrically or asymmetrically may result. -
Page 35: Side Slip
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Normal Procedures Normal Procedures 4.5.15 S 4.5.16 L ANDING (1) Side-slip can be recommended for landing only with a small amount of (a) Water ballast should normally be dumped prior to landing. Because of air brake extension, as low-speed side-slip is not possible because of possible unequal dumping, see also “Emergency Procedures”, section... -
Page 36: Flight In Rain
5. Check proper emptying of integral tanks. launch in the vicinity of thunderstorms, as carbon fibres are used in important structures of the LS8-s and LS8-sb sailplanes. 6. Check proper dumping of tail fin water tank. 7. Keep all water valves open for ventilation of wing water tanks and tail 4.5.19 C... - Page 37 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Performance Performance 5.1 I ERFORMANCE NTRODUCTION Contents of Section 5: Section 5 provides approved data for airspeed calibration and stalling speeds and additional unapproved information. Data in the charts has been computed from actual flight tests with the 5 Performance .................
- Page 38 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Performance Performance 5.2.2 S 5.2 EASA- TALLING PEEDS APPROVED Stalling speeds (IAS) for straight and level flight: 5.2.1 A IRSPEED NDICATOR YSTEM ALIBRATION Diagram shows airspeed indicator error due to position of pressure ports:...
- Page 39 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Performance Performance 5.3 A 5.3 A (continued) DDITIONAL NFORMATION DDITIONAL NFORMATION 5.3.2 F LIGHT OLAR 5.3.1 D EMONSTRATED ROSSWIND ERFORMANCE Aero Tow: ..20 km/h <11 Kt., 12 mph> Polar curves of LS 8-t with 15 & 18 m wingspan Winch Launch: ..25 km/h <13 Kt., 15 mph>...
- Page 40 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Weight and Balance Weight and Balance 6.1 I EIGHT AND ALANCE NTRODUCTION This section gives details about permissible Cockpit Loading and approved Contents of chapter 6: mass limitations of this sailplane.
- Page 41 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Weight and Balance Weight and Balance 6.2 Weighing Record and Loading Limits 6.2 Weighing Record and Loading Limits (continued) Warning: New entry with each new weighing or when changing equipment.
- Page 42 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Weight and Balance Sytems 7 Description of S YSTEMS 6.3 Inflight C.G. calculation Contents of Chapter 7: Table of C.G. positions of various items of equipment: 7 Systems ................7-1 7.1 Introduction ..............
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Page 43: Systems
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Systems Systems 7.2 C 7.2 C (continued) OCKPIT CONTROLS OCKPIT CONTROLS A - Left canopy locking A - Left canopy locking Right canopy locking and emergency jettison Right canopy locking and emergency jettison... - Page 44 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Systems Systems 7.3 C ONTROL YSTEM Air Brake Control Rudder Control: Upper surface double height air brakes with spring loaded cover blades. Cable controlled from adjustable pedals. Activated via pushrods, guided in longitudinal motion ball bearings. Automatic See Diagram in Maintenance Manual chapter 1.
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Page 45: 7.5 Landing Gear
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Systems Systems 7.6 Baggage Compartment 7.5 Landing Gear a) Main wheel: Sprung retractable landing gear, housed in closed and sealed Baggage compartment behind pilot's shoulders, accessible on ground after swivelling backrest forward. Loading possible after rigging only. Permanent box. -
Page 46: Water Ballast System And Operation
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Systems Systems 7.7 W 7.7.1 W ATER ALLAST YSTEM AND PERATION ATER ALLAST YSTEM Each wing contains 2 integral tanks (inner and outer tank) with related (1) Valve of inner tank discharge valve and ventilation. -
Page 47: Fuselage Water Ballast System
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Systems Systems 7.8 E LECTRICAL YSTEM AND PERATION 7.7.2 F USELAGE ATER ALLAST YSTEM For electrical system, see wiring diagram below. Electrical supply by sealed and LS8-s: 12 Litres Integral tank maintenance free 12V/7,2 Ah gel-cell battery. -
Page 48: Pneumatic System
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Systems Systems 7.9 P (Static- and Pitot-Pressure) NEUMATIC YSTEM 7.9 P (Static- and Pitot-Pressure) NEUMATIC YSTEM 7.9.2 LS8-sb 7.9.1 LS8-s Diagram: Pitot pressure port at vertical tail fin (Option) below TE port. -
Page 49: Various Equipment
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Systems Handling, Servicing and Maintenance 7.10 V ARIOUS QUIPMENT ANDLING ERVICING AND AINTENANCE 7.10.1 E XPENDABLE ALLAST EIGHTS Contents of Chapter 8: Expendable ballast to compensate pilot weight below Minimum Cockpit Load may be fitted in front of rudder pedals and secured with knurled nut. -
Page 50: Introduction
Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Handling, Servicing and Maintenance Handling, Servicing and Maintenance 8.2 S AILPLANE NSPECTION AINTENANCE NTERVALS 8.1 I NTRODUCTION (a) Annual Inspection according to checklist and inspection forms provided in This section contains manufacturer recommended procedures for proper Maintenance Manual, chapter 12, after performance of annual maintenance ground handling and servicing of the sailplane. - Page 51 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Handling, Servicing and Maintenance Handling, Servicing and Maintenance 8.3 M 8.3 M (continued) ODIFICATIONS OR EPAIRS ODIFICATIONS OR EPAIRS (a) Alterations or repairs must be accomplished by licensed personnel. 8.3.2 Forward Horizontal Tail Attachment...
- Page 52 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Handling, Servicing and Maintenance Handling, Servicing and Maintenance 8.4 G (continued) 8.4 G (continued) ROUND ANDLING RANSPORT ROUND ANDLING RANSPORT 8.4.3 Tie-down 8.4.5 Supporting Area for Road Transport Tie-down out in the open as a substitute for a hangar place should never...
- Page 53 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Handling, Servicing and Maintenance Handling, Servicing and Maintenance 8.5 C 8.5 C (continued) LEANING AND LEANING AND CARE For Canopy (Plexiglas) care never use dry cloth because of resulting static Important Warning: charge, consequent collection of dust particles and scratching.
- Page 54 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Handling, Servicing and Maintenance Handling, Servicing and Maintenance 8.5 C (continued) 8.6 L LEANING AND TORAGE Preparation and Storage Pins, Bushes and Control System Connectors Due to required tolerances not all these items can be protected against corrosion.
- Page 55 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Supplements Supplements UPPLEMENTS 9.1 I NTRODUCTION This section contains the appropriate supplements necessary to safely and Contents of Section 9: efficiently operate the sailplane when equipped with various optional systems and equipment not provided with the standard sailplane.
- Page 56 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Supplements Supplements 9.2 L IST OF SUPPLEMENTS INCLUDED 9.3 Emergency Exit Assist System NOAH (Optional) Chapter 1 Date Section Denomination of added Supplement Introduction In the following pages modifications to variuos Flight Manual chapters related to the emergency assist system NOAH are provided.
- Page 57 Flight Manual LS8-s and LS8-sb Flight Manual LS8-s and LS8-sb Supplements Supplements 9.3 Emergency Exit Assist System NOAH (Optional) 9.3 Emergency Exit Assist System NOAH (Optional) Chapter 3 Chapter 7 NOAH activator lever placed on right side cockpit frame Use of NOAH in an emergency exit: adjacent to control stick and marked black-yellow.
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