Summary
LAK-17B is new version of LAK17A. Regarding A version, B has new wings with modified geometry and new wing profile, which allow even higher wing loadings than competitors. Fuselage and tail section is identical like A version.
The creators of Front Electric Sustainer ( FES ) are Luka Znidarsic and Matija Znidarsic, both experienced sailplane pilots and mechanical engineers in Slovenia.
Front refers to the motor’s location, right in the nose of the sailplane. A 1 meter carbon fibre propeller automatically extends when the outrunner is operating. When not in use, the propeller blades fold against the nose of the sailplane thus reducing drag. Each blade weighs just 240 g.
The Znidarsic’s developed their own brushless DC synchronous permanent magnet electric motor and controller for the application which is light, small and mounted on top of main whell box. The motor is 7.3 kg (16.1 pounds), and puts out 22 kW (30 horsepower) at 116 Volts. Total weight for the power package is 45-50 kg (99-110 pounds), with Kokam lithium-ion batteries in two packs ( each behind the rear spar, balancing the weight of the motor and propeller in the nose ).
If batteries are discharged during flight using the motor, they are easily accessible from the top of the fuselage so that you can take them out for charging. Unlike lead acid batteries, Li-Po batteries can be stored for 3 or 5 months without significantly losing charge. Charging time of batteries is about 6 hours (2 hours with quick charger) .
For more information about FES please visit www.front-electric-sustainer.com
Technical data
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.
- Self-designed instrument panel: Manufacturer provides possible shapes of the instrument panel and the owner makes their own design;
- Pedals adjustable in flight, to change position of legs and body during long flights;
- Seat-back adjustable in flight allows changes in one’s position during long flights;
- Leather-covered handles feel cool in your hands.
- Landing gear position warning when opening the airbrakes;
- Shock absorbing foam cushion;
- Air inflatable back support pillow, in-flight adjustable to the desirable spine position-strongly recommended to improve your sports results;
- Antenna for a transponder preinstalled in the fin;
- Factory installed ELT;
- Holes in the fin water ballast tank protects from overfilling the tank and CofG moving behind the limits;
- LED strobe, low energy consumption;
- Factory installed oxygen system;
- Tinted canopy glass;
- Air extractor;
- Microphone in the instrument panel;
- Choice of cushion materials, fitting the LAK standard shape or a customized shape:
- Sockets for a headset;
- Installation of a CD or USB player;
- Bluetooth devices.