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The PIK-3 (''Polyteknikkojen Ilmailukerho'' – Finnish institute of technology students flying club) was a sailplane produced in Finland in the 1950s and 60s.
[Taylor 1989, p.726] It was designed to be a cheap and easy-to-build aircraft
[Coates 1978, p.24] to equip the country's gliding clubs as their standard single-seat machine.
[Hardy 1982, p.74] It was a conventional design for its day, with a high wing and conventional empennage.
Construction was of wood throughout, skinned in plywood.
Design work commenced in 1942,
["PIK-sarjan lentokoneet"] but the prototype did not fly until 1950.
Antti Koskinen refined the design for production as the PIK-3A and then further modified the design by replacing the flaps with air brakes, which was designated the PIK-3B.
By the end of the 1950s, a third modification of the original design was carried out by Olavi Roininen
as the PIK-3C. This had completely new wings of 15 m (49 ft 3 in) to allow it to compete in the
Standard Class
Competition classes in gliding, as in other sports, mainly exist to ensure fairness in competition. However the classes have not been targeted at fostering technological development as in other sports. Instead classes have arisen because of:
* t ...
.
The prototype flew on 20 May 1958,
and the design was then modified for production by
Suomen Ilmailuliitto.
Variants
* PIK-3 – first prototype with wingspan of 13 m (47 ft 8 in)
* PIK-3A ''Kanttikolmonen'' – initial production version of PIK-3
* PIK-3B – PIK-3A with air brakes in place of flaps
* PIK-3C ''Kajava'' – PIK-3B with new wings of 15 m (49 ft 3 in) span
Specifications (PIK-3c)
See also
Notes
References
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{{PIK aircraft
1950s Finnish sailplanes
PIK aircraft
Glider aircraft
High-wing aircraft
Aircraft first flown in 1950