PIK-13

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

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

Specifications

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

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

References

• "Editorial" (PDF). The Lasham Newsletter (23). Lasham: Lasham Gliding: 1–2. August 1954. Retrieved 2009-01-11. ^{[dead link]}
• "PIK-sarjan lentokoneet". Polyteknikkojen Ilmailukerho website. Retrieved 2009-01-11.
• "Sailplanes seen at Camphill" (PDF). The Lasham Newsletter (23). Lasham: Lasham Gliding: 2–3. August 1954. Retrieved 2009-01-11. ^{[dead link]}
• "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.