LAK-17AT
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The LAK-17AT is a single seat high performance self-sustaining powered sailplane of FAI 15m – 18m class designed according to JAR-22, category “U” specifications. It is a mid-wing motor-glider with flaps, T-tail, retractable main landing gear. Sailplane is equipped with retractable power-plant powered by 19,6 kW (26,28 hp) two stroke two cylinder air cooled SOLO 2350 engine.
The sailplane is made of composite materials. The wing spar is made of pultruded carbon rods GRAPHLITE SM315 and has a double T section. The wing water ballast of 180 ltr. (47.55 US gal.) is filled in and poured out through the holes at the bottom of the wings. The airbrakes are located on the upper wing surface only. The wing airfoil is LAP 92-130/15 at the root transiting into LAP 92-150/15 at the tip.
The cockpit is of monocoque construction. The controllable seat back and an adjustable head rest together with optimally arranged controls offer notable comfort for the long flights. The one piece Plexiglas canopy hinges forward. The instrument panel folds up together with a canopy.
The retractable landing gear with shock absorbers has a 350x135mm (5.00-5) tire. The mechanical main wheel brake is actuated via the handle on the stick. The rudder pedals are adjustable in flight. All controls, including the water ballast system, hook up automatically or semi-automatically. Towing hooks are mounted: near the main landing gear (C.G. / winch / auto-tow hook) and/or in front of the pilot cockpit at the bulkhead (aero tow hook).
The T-tail (fixed stabilizer with elevator) of the LAK-17AT provides stable and responsive pitch characteristics. The elevator hooks up automatically during assembly. The glider is fitted with a fin ballast tank of 8 ltr. (2,11 US gal.) capacity in order to adjust the optimum C.G. position.
Power – plant is operated and controlled by motor control unit ILEC MCU.