PIK-13

The PIK-13 was a sailplane constructed in Finland to compete in the 1954 World Gliding Championships,[1] held at Camphill Farm, Great Hucklow, UK.[2] It was a conventional mid-wing design of "workmanlike" construction[3] and underwent five test flights in the course of 1954 before its entry in the competition.[4]

PIK-13
Role Competition sailplane
National origin Finland
Manufacturer Polyteknikkojen Ilmailukerho
First flight 1954
Number built 1

In the championships, the PIK-13 was flown by Antti Koskisen,[2][5][6] who was placed 16th with 931 points.[7] The PIK-13 was destroyed in an accident on 26 March 1956 when the control stick broke in flight.[4] Pilot Jorma Jalkanen parachuted to safety.[4]


Specifications

Data from Jane's all the World's Aircraft 1955-56[8]

General characteristics

  • Length: 7.3 m (23 ft 11 in)
  • Wingspan: 17.6 m (57 ft 9 in)
  • Height: 1.55 m (5 ft 1 in)
  • Wing area: 14.6 m2 (157 sq ft)
  • Aspect ratio: 21
  • Airfoil: root:Göttingen 549, tip:Göttingen 693
  • Empty weight: 197 kg (434 lb)
  • Gross weight: 300 kg (661 lb)

Performance

  • Never exceed speed: 250 km/h (160 mph, 130 kn)
  • Auto-tow maximum speed:115 km/h (71 mph; 62 kn)
  • Aero-tow maximum speed:130 km/h (81 mph; 70 kn)
  • g limits: +8
  • Maximum glide ratio: 33:1 at 85 km/h (53 mph; 46 kn)
  • Rate of sink: 0.7 m/s (140 ft/min) at 62 km/h (39 mph; 33 kn)
  • Wing loading: 20.5 kg/m2 (4.2 lb/sq ft)

Notes
  1. Taylor 1989, p.726
  2. "World Gliding Championships" 1954, p.250
  3. "Sailplanes seen at Camphill" 1954, p.3
  4. "PIK-sarjan lentokoneet
  5. Yates 1954, p.74
  6. Wiggin 1954, p.5
  7. The Lashan Newsletter No 23, 1954, editorial
  8. Bridgman, Leonard (1955). Jane's all the World's Aircraft 1955-56. London: Jane's all the World's Aircraft Publishing Co. Ltd.

References
  • "Editorial" (PDF). The Lasham Newsletter. Lasham: Lasham Gliding (23): 1–2. August 1954. Retrieved 2009-01-11.
  • "PIK-sarjan lentokoneet". Polyteknikkojen Ilmailukerho website. Retrieved 2009-01-11.
  • "Sailplanes seen at Camphill" (PDF). The Lasham Newsletter. Lasham: Lasham Gliding (23): 2–3. August 1954. Retrieved 2009-01-11.
  • "Suomalaisia purjelentokoneita". Ilmailu (11): 26. 1959.
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
  • Wiggin, Barney L. (November–December 1954). "The World Contest" (PDF). Soaring: 2–9. Archived from the original (PDF) on 2006-10-02. Retrieved 2009-01-11.
  • "World Gliding Championships". Flight: 250. 26 February 1954. Retrieved 2009-01-11.
  • Yates, Alan (16 July 1954). "Great Hucklow Prospects". Flight: 73–74. Retrieved 2009-01-11.
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