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PIK-3

Sailplane produced in Finland

Field	Value
name	PIK-3
image	PIK-3a.JPG
caption	PIK-3a in Finnish Aviation Museum
aircraft_type	Sailplane
national_origin	Finland
manufacturer	Polyteknikkojen Ilmailukerho
designer	Lars Norrmen and Ilkka Lounama
number_built	40
first_flight	1950

NOTOC

The PIK-3 (Polyteknikkojen Ilmailukerho – Finnish institute of technology students flying club) was a sailplane produced in Finland in the 1950s and 60s. It was designed to be a cheap and easy-to-build aircraft to equip the country's gliding clubs as their standard single-seat machine. 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, 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. 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)

|prime units?=met General characteristics

|max takeoff weight kg=280 |max takeoff weight lb= |max takeoff weight note= (PIK-3 – 240 kg) Performance

|never exceed speed kmh=235 |never exceed speed mph= |never exceed speed kts= |never exceed speed note= (PIK-3 – 200 km/h)

Rough air speed max: 145 km/h (PIK-3 – 130 km/h)
Aerotow speed: 140 km/h (PIK-3 – 130 km/h)
Winch launch speed: 110 km/h (PIK-3 – 100 km/h)
Terminal velocity: with full air-brakes at max all-up weight 200 km/h (PIK-3 – 180 km/h) |minimum control speed kmh= |minimum control speed mph= |minimum control speed kts= |minimum control speed note= |wing loading kg/m2=21.4 |wing loading lb/sqft= |disk loading kg/m2= |disk loading lb/sqft= |fuel consumption kg/km= |fuel consumption lb/mi= |power/mass= |thrust/weight=

Notes

References

Taylor 1989, p.726
Coates 1978, p.24
Hardy 1982, p.74
"PIK-sarjan lentokoneet"
Shenstone, B.S.. (1958). "The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs dans Le Monde". Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue.

Info: Wikipedia Source

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1950s-finnish-sailplanes pik-aircraft glider-aircraft high-wing-aircraft aircraft-first-flown-in-1950

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