![]() ![]() Accurate flight model using correct airfoils.Three X-Plane versions of the PIK-20 are produced here. It is also certified for a very long service life compared to other gliders. The PIK-20 is unusual in that it does not use gelcoat on the fibreglass – the moulds being produced to produce a smooth surface without it, with paint used to finish the aircraft. Issoire in France manufactured a version called the PIK-30, which was similar to the E, but with 17m span wings that increased max L/D to 46, but had the restrictions of not being winch launchable or using full negative flaps. ![]() The later E model is like the D but is self-launching, using a pylon mounted Rotax 501 piston engine, with the engine raised and lowered via 15 turns of a very similar crank handle to the flap handle of the B model. The standard class rules were soon changed again, banning the use of flaps altogether, which resulted in the non-standard class compliant PIK-20D with conventional airbrakes but keeping the full span flapperons. In 1976 the PIK-20B won first, second and third places at the standard class world championship. The PIK-20B won the British, American and Finnish National Championship in 1975. A large crank handle on the left side of the cockpit was needed for the pilot to have enough power to get the flaps in their full down setting. Soon after the PIK-20 went into production, the standard class rules were altered to allow flaps and ailerons to move together (flapperons) and so the model B was developed, which has full span flappperons, with the inboard section retaining flap deflection of up to 90 degrees. The original PIK-20 was designed to these rules and given both water ballast and flaps inboard of the ailerons that could be set in three modes – negative for high speed flight, positive for better low speed performance and 90 degrees positive to add lots of drag to be able to descend quickly. The rules of the standard class at the time allowed flaps instead of airbrakes for increasing the rate of descent as well as the option of water ballast. It was manufactured by Eiri-Avion in Finland The name PIK is an acronym for Polyteknikkojen Ilmailukerho, the flying club of the Student Union of Helsinki University of Technology. The PIK-20 was designed as a 15m standard class glider by the Helsinki University of Technology, the prototype first flying in 1973. ![]()
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