Related Manuals for LZ design FES
Summary of Contents for LZ design FES
- Page 1 FES FLIGHT MANUAL Version 1.16 LZ Design d.o.o., ▪ Brod 3D, 1370 Logatec, Slovenia ▪ tel +386 59 948 898 info@lzdesign.si ▪ www.front-electric-sustainer.com...
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Page 2: Table Of Contents
FES Flight Manual Version 1.16 October 2017 Table of Content 1. General ........................5 Introduction ...................... 5 Certification basis ....................5 Warnings, cautions and notes ................5 Descriptive data ....................5 Three-view drawing ................... 6 Abbreviations ....................7 Unit conversions....................7 2. - Page 3 FES Flight Manual Version 1.16 October 2017 Pre-flight inspection ..................16 4.4.1 Preflight test run ..................17 Normal procedures and recommended speeds ..........18 4.5.1 Aero tow launch ..................18 4.5.1 Aero tow launch ..................18 4.5.2 Winch launch ................... 18 4.5.3...
- Page 4 FES Flight Manual Version 1.16 October 2017 Air brakes system .................... 29 Baggage Compartment ..................30 Water ballast system ..................30 7.10 Powerplant....................30 7.11 Battery packs ....................30 7.12 Electrical system ................... 30 7.13 Miscellaneous equipment ................30 8. Sailplane handling, care and maintenance ..............31 Introduction ....................
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Page 5: General
1. Pilots with information for the safe and efficient operation of the sailplanes equipped with Front Electric Sustainer/Self-launcher system. 2. Sailplane manufacturer of specific type of sailplane equipped with FES, with all the information necessary to prepare flight manual of the sailplane after FES installation. -
Page 6: Three-View Drawing
FES Flight Manual Version 1.16 October 2017 1.5 Three-view drawing Typical FES equipped powered sailplanes are Discus 2c FES and Ventus 2cxa FES Page 6 of 33... -
Page 7: Abbreviations
FES Flight Manual Version 1.16 October 2017 Abbreviations - calibrated airspeed means indicated airspeed of a sailplane, corrected for position (due to position of pressure ports on sailplane) and instrument error. Calibrated airspeed is equal to true airspeed in standard atmosphere at sea level C.G. -
Page 8: Limitations
Discus 2c, it is a sustainer system, and it is prohibited from taking-off solely, if not specified differently in flight manual. On lighter UL sailplanes like Silent 2, or MiniLAK FES it is a self-launch system. Page 8 of 33... -
Page 9: Motor
FES-xxx-Myyy; xxx - represent version of motor for specific glider type yyy - represent motor length More detailed data about motor which is used on specific type of FES powered sailplane are described in separate FES motor manual! 2.4.2 Propeller Manufacturer: LZ design d.o.o. -
Page 10: Weight
October 2017 2.6 Weight FES system can be installed only on such type of sailplanes which have enough margin in maximum weight of non-lifting parts. Total weight of all FES components including reinforcement ribs for battery compartment box is about 50kg. However, 12V... -
Page 11: Aerotow And Winch- And Autotow-Launching
As specified in flight manual of pure sailplane. 2.14 Other limitations As specified in flight manual of pure sailplane. 2.15 Limitations placards Additional limitation placard needs to be added for FES equipped sailplanes: Speed IAS: km/h Power-plant operation Max. engine start POmax Min. -
Page 12: Emergency Procedures
FES Flight Manual Version 1.16 October 2017 3. Emergency procedures Introduction According flight manual of pure sailplane. Canopy jettison Before canopy jettison, stop motor and switch OFF power switch, Warning: if there is still enough time to do that. Bailing out... -
Page 13: Power Loss During Flight
Please study FES FCU Instrument manual for detailed behaviour and necessary actions after appearance of certain messages or LED lights. Page 13 of 33... -
Page 14: Fire
• extinguish fire 3.8.2 Fire during flight In all FES equipped gliders must be installed independent fire warning system which warns a pilot via very bright red blinking LED light, installed on top middle area of instrument panel, in case when temperature in battery compartment reach more than 88°C. -
Page 15: Normal Procedures
4.2.2 Charging the batteries Valid for FES Self-launchers: For self-launching FES battery packs must be always recharged, so that maximum power for good climb rate is available. This is especially important for: -cold batteries, when voltage drop under high power load is bigger... -
Page 16: Installing The Batteries
• Check the sailplane as required for each type according its Flight Manual. • Check the FES system visually especially propeller blades condition • Check function of fire warning flashlight by test button (must light up brightly,... -
Page 17: Preflight Test Run
FES Flight Manual Version 1.16 October 2017 4.4.1 Preflight test run After battery packs were recharged, it is always required to perform short motor run, so that FCU instrument can recognize recharge and new charge level is stored to the FCU memory. -
Page 18: Normal Procedures And Recommended Speeds
FES Flight Manual Version 1.16 October 2017 Normal procedures and recommended speeds As described for a pure sailplane, but have in mind that with installed FES your glider has higher wing loading, so you have to adjust speeds accordingly. 4.5.1 Aero tow launch Before take-off, always switch ON the FCU instrument. -
Page 19: Self-Launch And Climb
4.5.6 Free flight As described for a pure sailplane, but have in mind that with installed FES your glider has higher wing loading, so adjust speeds accordingly. FCU instrument should be always ON during soaring flight. -
Page 20: Cruise And Climbing With Running Motor
2. Turn ON Power Switch 3. Check if there is green LED ON (left lower LED), check Voltage level (If there is no green LED or red LED is blinking motor will not run). Read FES FCU instrument manual for detailed FCU description 4. -
Page 21: Propeller Positioning
-number of steps after hall sensor for position is detected 4.5.9 Approach As pure glider, but have in mind that with installed FES your glider has higher wing loading, so increase landing speed for 5 to 10km/h. Check that propeller blades are parked in horizontal position and “Power switch” is switched OFF. -
Page 22: Landing
October 2017 4.5.10 Landing As pure glider, but have in mind that with installed FES your glider has higher wing loading, so increase landing speed for 5 to 10km/h. Land always with propeller blades in horizontal position, or propeller blades might be damaged during landing, or during opening of the canopy. -
Page 23: Flight With Water Ballast
RPM settings, suitable for horizontal flight, to avoid damaging propeller blades. Stop motor if rain becomes stronger. 4.5.14 Aerobatics Aerobatic maneuvers are in general not allowed with a FES equipped sailplanes, if is not specifically allowed for a certain FES equipped type! Page 23 of 33... -
Page 24: Performance
(detailed location of ports depends on specific glider type). 5.2.2 Stall speeds As pure glider, but have in mind that with FES installed your glider has higher wing loading, so stall speeds are higher. 5.2.3 Take-off performance (only for self-launch approved types of sailplanes) -
Page 25: Additional Information
5.2.4 Additional information Non-approved further information 5.3.1 Demonstrated crosswind performance FES equipped sailplane has the same crosswind performance as a pure sailplane. 5.3.2 Glide performance Idaflieg flight comparison measurements results (LAK17A FES, August 2012), showed only minor effect of propeller blades to glide performance which is only about 1 L/D point in entire speed range. -
Page 26: Flight Polar
(moving polar to the right). So best L/D is at about 5km/h higher speed, and minimum sink rate is also at about 5km/h higher speed, compared to pure glider. Graph above shows flight polar of LAK17A FES in 18m configuration, at 416kg take-off weight (without water ballast, but with about 20kg of measurement equipment!). -
Page 27: Cruising Flight
Regarding ENL (Engine Noise Level) signal for Flight recorder: It should be emphasized that for the ENL signal to be significant when the FES is running, the Flight Recorder must be mounted in the instrument panel or equally close to the FES unit. -
Page 28: Weight And Balance
6. Weight and balance 6.1 Introduction At each FES equipped sailplane, positioning of FES elements should be arranged in such a way, that C.G. position remains in nearly the same range as at pure sailplane. 6.2 Weight and Balance Record and permitted payload-range As it is valid for a pure version or powered version of specific sailplane type. -
Page 29: General Sailplane And Systems Description
Total energy compensation source is normally from the fuselage vertical stabilizer, below pitot source. When FES is installed into used sailplane and there is only one tube available (for total energy compensation but not for pitot), then this tube is taken for pitot source. In such case, electronic compensation can be used. -
Page 30: Baggage Compartment
7.10 Power plant Detailed description of FES power plant can be found in FES maintenance manual, where are also listed other manuals for specific type of FES equipped sailplane. 7.11 Battery packs Detailed description of FES Battery packs can be found in FES Battery packs manual. -
Page 31: Sailplane Handling, Care And Maintenance
When rain is expected do not leave FES equipped sailplane outside on the rain, unless is covered with high quality all weather covers. It is recommended to remove FES batteries out of the glider and store them in dry place! - Page 32 If sailplane is parked, stored or transported, then the connecting Warning: cable of the FES-batteries must be removed! e) Transport of not installed Batteries If the batteries are carried by the carrier strap by hand, then care must be taken to prevent that the batteries suffer any mechanical damage, e.g.
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Page 33: Sailplane Trailer
If canopy cover is not used than propeller blades should have fitted a cover with elastic, which also prevent opening propeller blades! Newer FES gliders have metal plates in tips of the propeller blades. On fuselage is installed magnet on suitable position, which holds propeller blades in aligned with the fuselage contour.
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