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Amendments, list of effective pages, table of contents
0.1
Amendments
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. and the date
will be shown on the bottom left hand of the page.
No.
Page
1
0.0-7.6
2
1.1 -1.4, 2.1, 2.2,
2.6 – 2.9,
3.1 – 3.3,
4.1 – 4.14,
5.1, 5.2, 6.1 – 6.5,
7.1 – 7.5,
8.1 – 8.4, 9.1
Issued May 2011
Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited
Flight Manual LS1-f
Description
Combination of the initial flight
manuals of the Variants LS1-f
and LS1-f (45), new
standardized format
Miscellaneous changes to the
contents of the latest
amendments of the initial flight
manuals
Date
Inserted
Signature
May 2011
May 2011
0.1
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Summary of Contents for Flugzeugbau LS1-f
- Page 1 3.1 – 3.3, amendments of the initial flight 4.1 – 4.14, manuals 5.1, 5.2, 6.1 – 6.5, 7.1 – 7.5, 8.1 – 8.4, 9.1 Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
- Page 2 Flight Manual LS1-f Page intentionally left blank Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
- Page 3 ″ ″ ″ ″ ″ ″ ″ 2.10 ″ May 11 ″ ″ May 11 ″ ″ ″ ″ ″ ″ ″ ″ 4.10 ″ 4.11 ″ Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
- Page 4 4.13 ″ 4.14 ″ May 11 ″ ″ May 11 ″ ″ ″ ″ May 11 ″ ″ ″ ″ May 11 ″ ″ ″ May 11 Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
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Page 5: Table Of Contents
Limitations placards LS1-f ..............2.8 2.13.2 Limitations placards LS1-f (45)............2.9 2.13.3 LS1-f and LS1-f (45) ............... 2.10 Emergency procedures................3.1 Introduction....................3.1 Canopy jettison ..................3.1 Bailing out....................3.1 Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... - Page 6 Introduction....................6.1 Weighing procedures ................6.1 Weighing record..................6.1 Basic empty mass and C.G..............6.1 Mass of all non-lifting parts (WNLP)............6.1 Max. mass (weight).................. 6.1 Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
- Page 7 Transport ....................8.2 Towing on the ground................8.3 Cleaning and Care..................8.3 8.7.1 Hints for care..................8.3 8.7.2 Plexiglas canopy ................8.4 8.7.3 Metal parts..................8.4 Supplements..................... 9.1 Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
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Page 8: General
1.1 Introduction The sailplane flight manual has been prepared to provide pilots and instructors with information for the safe and efficient operation of the LS1-f and LS1-f (45). This manual includes the material required to be furnished to the pilot by the airworthiness requirements. -
Page 9: Warnings, Cautions And Notes
"Note" directly related to safety but which is important or unusual. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 10: Descriptive Data
Flight Manual LS1-f 1.4 Descriptive data The LS1-f and LS1-f (45) are single-seater high performance sailplanes with conventional T-type horizontal tailplane. Technical details • Comfortable seating, backrest adjustable at ground. • Large canopy for good in-flight vision. • Sealed airbrake- and landing gear boxes. -
Page 11: Three View Drawing
Flight Manual LS1-f 1.5 Three view drawing Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 12: Limitations
Limitations 2.1 Introduction Section 2 includes operating limitations, instrument markings and basic placards necessary for safe operation of the gliders LS1-f and LS1-f (45), its standard systems and standard equipment. The limitations included in this section have been approved. Issued May 2011... -
Page 13: Airspeed
Note: The strength of the airframe is proved for + 10 m/s gusts at max. speed VNE. This means that combination of such a gust at VNE and positive manoeuvring load at the same time may overstress the airframe Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 14: Airspeed Indicator Markings
Yellow 170 -270 Manoeuvres must be con ducted with (92 – 146) caution and only in smooth air Red Line 270 (146) Maximum speed for all operations Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 15: Mass (Weight)
C.G. diagrams and loading chart see sect. 6. 2.6 Approved manoeuvres This sailplane is certified for normal gliding in the "Utility" category. Aerobatics are not approved. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 16: Flight Crew
Note: Experience has shown that the installed airspeed indicator system may be used for cloud flying. Caution: The weight of the upper part of the instrument panel shall not exceed 4 kg (8.8 lbs.). Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 17: Aerotow, Winch And Autotow Launching
In case to pitot pressure port is installed in the fuselage nose the ASI indication may be lower than real during aerotow depending on cable ring position. 2.11 Tyre Pressure Main wheel 3,0 bar (43.5 psi) Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 18: Waterballast
Warning: Follow the loading chart, see section 6.8. Don’t try to fill more water into the tanks than the specified values. The max. take off weight must not be exceeded. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 19: Limitations Placards
0-2000 3000 4000 5000 6000 7000 8000 9000 10000 VNE IAS km/h Altitude in [ft] 0-6560 9843 13124 16405 19685 22966 26247 29528 32809 VNE IAS kts. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 20: Limitations Placards Ls1-F (45)
8000 9000 10000 VNE IAS km/h Altitude in [ft] 0-6560 9843 13124 16405 19685 22966 26247 29528 32809 VNE IAS kts. Clearly visible at right cockpit wall Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 21: Ls1-F And Ls1-F (45)
43,5 – 51 psi Baggage load At baggage compartment Max. 12 kg (26.5 lbs.) Weak link On left landing gear d max. 550 daN (1213 lbs.) Issued May 2011 2.10 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 22: Emergency Procedures
Easing the stick forward and picking up a dropping wing with sufficient opposite rudder the glider can be recovered from the stall. To recognize and prevent the stall, please refer to section 4.4.3. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 23: Spinnng Characteristics And Spin Recovery
40 m (130 ft) before the end of the field to execute a controlled ground loop: - If possible turn into the wind! - At the same time try to decrease tail load by pushing the stick forward. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 24: Emergency Landing On Water
Note: Always try to land parallel to the shore. If there is a flow always land with the flow. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 25: Normal Procedures
14. Tape the gaps of the wing-fuselage junction and at the tailplane. 15. Execute a positive control check, one helper is needed to hold firmly the control surfaces. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 26: Handling And Securing The L'hotellier Control Quick Connectors
Warning: With connectors unsecured, the locking plate may open under load temporarely. The locking plate should never be greased. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 27: Filling The Water Ballast Tanks
On the ground you may dump water from one tank if you rest the opposite wing on the ground. 1. Extend the landing gear. 2. Open dump valve, complete dumping takes about 2 minutes (LS1-f) or 4 minutes (LS1.f(45)). 3. Leave dump valve open to avoid pressure difference in waterballast- system when changing altitude. -
Page 28: Derigging
Caution: Lift wings far enough that you can turn the main pins. The resulting dihedral shall be maintained during the whole derigging procedure of the wings to avoid damage to the fuselage Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 29: Daily Inspection
Warning: Don’t operate the glider with a loose ball. 4. Horizontal tailplane Check the mounting points and the elevator control hook up for wear and corrosion. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 30: Inspection After Rigging - Walk Around The Aircraft
Check wheel brake and cable for wear; d) Check wheel brake function: e) Check if drain holes in front and behind landing gear box are open; Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... - Page 31 Check elevator seals, see MM section 4.5. 10. Right wing see item 6. 11. Fuselage nose Check the ports for the static pressure and the pitot pressure for cleanliness. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
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Page 32: Daily Inspection After Flight Operaton
8. Trim position ? 9. Altimeter adjusted? 10. Positive control check performed? (One person at the control surfaces). 11. Tail dolly removed ? 12. Tow release checked? 13. Canopy locked? Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 33: Normal Procedures And Recommended Speeds
Caution: Do not fly at less than 100 km/h (54 kts.) or not more than 130 km/h (70 kts.). Don’t retract the landing gear during lauch as the tow release is mounted at the landing gear. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 34: Free Flight
Caution: Flights in conditions conducive to lightning strikes must be avoided. High speed flying The LS1-f / LS1-f (45) can be trimmed almost up to high speeds. Nevertheless don't release the stick at any time. Watch airspeed indication because red line speed may easily be exceeded inadvertently due to the shallow descent angle and low wind noise. -
Page 35: Approach And Landing
Landing with the landing gear retracted Wheel-up landing is not recommended see emergency procedures, section 3.8. After a wheel-up landing check the fuselage belly and the C.G. tow hook for damage. Issued May 2011 4.11 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 36: Flight With Water Ballast
Otherwise the landing gear box will be filled with water and the wheel brake might become wet and will not brake sufficiently. Issued May 2011 4.12 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 37: Flight At High Altitude And At Low Temperatures
3. Dump the water ballast before you reach freezing altitude or descend to lower altitudes. 4. Do not fly below 0°C (32°F) when your glider is wet (e.g. after rain). Issued May 2011 4.13 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 38: Flights In Rain And Thunderstorms
You may extend the landing gear in addition to increase the sink rate. Warning: Flight in thunderstorm clouds is prohibited. 4.4.9 Aerobatics Aerobatic manoeuvres are prohibited Issued May 2011 4.14 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 39: Performance
IAS= indicated airspeed CAS= calibrated airspeed Caution: The airspeed indicator is to be connected to the static ports at the front fuselage. IAS km /h CAS km /h Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 40: Stall Speeds
The polars apply to a "clean" aircraft. With dirty wings, especially at the leading edge, or flight in rain the performance drops accordingly. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 41: Flight Polar
Flight Manual LS1-f 5.5 Flight polar 1 m/s= 1 kts, = 197 t/min 1 kts:= 1.852 km/h Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 42: Mass (Weight) And Balance
Max. mass without waterballast: Maximum take-off and landing mass = wings = Maximum mass of all non lifting parts (see above) = actual mass of the wings wings Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 43: Useful Loads (Payload)
Max. capacity: Variant LS1-f: 90 kg (198 lbs.), (23.8 US.gal.) Variant LS1-f (45): 180 kg (198 lbs.), (17.6 US.gal.) Warning: Filling the water ballast is only allowed with a filling system which enables determination of the exact amount of ballast filled, e.g. water gauge or calibrated canisters. -
Page 44: Weighing Report (For Section 6.3)
Empty mass C.G. Max. mass without W.B. Max. payload without W.B. Max. mass with W.B. Max. payload with W.B. Min. cockpit load Max.cockpit load Inspector, signature, stamp Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 45: Ballast Chart (Total Ballast)
Empty mass 230 kg, Pilot + parachute 95 kg => max. amount Example: of waterballast 65 kg, in case the wing tanks can take up this amount. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... - Page 46 Example: Empty mass 230 kg, Pilot + parachute 95 kg => max. amount of waterballast 114 kg, in case the wing tanks can take up this amount. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
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Page 47: Sailplane And Systems Description
Section 7 describes the operation of the sailplane including its systems. M.M. = Maintenance manual Refer to section 9 "Supplements" for details of optional systems and equipment. 7.2 Airframe The LS1-f is a single-seater high performance glider with 15 m wingspan. Construction: GFRP-foam-sandwich-shell Wings Double T-spar, GFRP-roving spar caps,... -
Page 48: Aileron Control
Trim: Spring trim sytem with handle at left hand cockpit wall. 7.6 Rudder Control Activation via steel cables, mass balance at rudder. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 49: Wheel Brake
Overcentre-locking in fuselage, spring mounted airbrake caps. 7.9 Waterballast System Waterbags, capacity: Variant LS1-f: 90 kg (198 lbs.), (23.8 US.gal.) Variant LS1-f (45): 180 kg (198 lbs.), (17.6 US.gal.) Dump valve on landing gear box. Dumping is via the landing gear box. 7.10 Cockpit Fiberglass shell. -
Page 50: Rudder Pedal Adjustment
The seat pan is removable. The backrest is adjustable on the ground. A cushion above the back rest acts as head rest. The LS1-f must be equipped with a 4 point safety harness fixed at the provided fixing points. 7.15 Instrument panel Fixed installation. -
Page 51: Pitot-/Static Pressure System
When pressing down the canopy make sure that the spring doesn’t buckle. c) The front person engages the canopy by turning the emergency release lock to the stop. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 52: Sailplane Handling, Care And Maintenance
External loads such as external camera installations are to be regarded as alterations! Repair instructions can be found in the LS1-f maintenance manual section No repairs should be carried out without referring to the manual. Issued May 2011... -
Page 53: Tie Down, Parking
The trailer should be well ventilated so as to prevent moisture build up which could result in bubbles forming in the gelcoat. A solar powered ventilator is recommended. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 54: Towing On The Ground
- Protect the aircraft from water and moisture. See sections 8.4 and 8.5. - Remove any water that has entered and allow the aircraft to dry out. - Never store your wet aircraft in a trailer. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 55: Plexiglas Canopy
3.4. - Other metal parts, especially the control stick and all handles should occasionally be preserved with metal polishs. Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited... -
Page 56: Supplements
Flight Manual LS1-f Supplements Section not effective Issued May 2011 Copyright DG Flugzeugbau GmbH - any copy or publishing prohibited...
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