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Lehtovaara PIK-16 Vasama

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PIK-16 Vasama
Role Glider
National origin Finland
Designer Tuomo Tervo, Jorma Jalkanen and Kurt Hedstrom, students at the Polyteknikkojen Ilmailukerho (PIK)
Introduction 1961
Number built 56

The Lehtovaara PIK-16 Vasama (English: Arrow) is a Finnish mid-wing, single-seat, FAI Standard Class glider that was designed by Tuomo Tervo, Jorma Jalkanen and Kurt Hedstrom, who were students at the Polyteknikkojen Ilmailukerho (PIK) and produced by Lehtovaara.[1][2]

Design and development

The PIK-16 is constructed from wood, with a fibreglass nose. The 15.0 m (49.2 ft) span wing employs a Wortmann FX-05-168 (14% modification) airfoil at the wing root, transitioning to a NACA 63 (2)-165 at the wing tip. The wing features dive brakes.[1][2][3] The prototype Vasama had V tail, but it was changed to cruciform tail on production aircraft.

A total of 56 PIK-16s were built. The aircraft was not type certified but it did become the second most exported Finnish glider, surpassed only by the later PIK-20 series.[1][2][4]

Operational history

The prototype PIK-16 set a Finnish national record for a 300 km (186 mi) triangle course of 86.6 km/h (54 mph) before it had even finished flight testing.[5]

The design won the OSTIV prize at the World Gliding Championships held at Junín, Buenos Aires Province, Argentina in 1963, finishing third in the standard class.[1][2]

Variants

PIK-16a
Prototype with a V-tail.[3][5]
PIK-16b
Revised design with a cruciform tail, four built by the Finnish Aeronautical Association at the Jämi Flying School.[3][6]
PIK-16c
Third version[3]

Aircraft on display

Specifications (Pik-16 Vasama)

Data from The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II[7]

General characteristics

Performance

  • Stall speed: 62 km/h (39 mph, 33 kn)
  • Never exceed speed: 250 km/h (160 mph, 130 kn)
  • Rough air speed max: 180 km/h (111.8 mph; 97.2 kn)
  • Aerotow speed: 150 km/h (93.2 mph; 81.0 kn)
  • Winch launch speed: 140 km/h (87.0 mph; 75.6 kn)
  • Terminal velocity: with full airbrakes 235 km/h (146 mph; 127 kn)
  • g limits: +7 -4 at 160 km/h (99.4 mph; 86.4 kn)
  • Maximum glide ratio: 34.5 at 86 km/h (53.4 mph; 46.4 kn)
  • Rate of sink: 0.59 m/s (116 ft/min) at 73 km/h (45.4 mph; 39.4 kn)
  • Wing loading: 24 kg/m2 (4.9 lb/sq ft)

See also

Related lists

References

Wikimedia Commons has media related to PIK-16 Vasama.

Citations

  1. ^ a b c d Activate Media (2006). "PIK-16 Vasama Lehtovaara". Retrieved 10 July 2011.
  2. ^ a b c d Said, Bob (November 1983). "1983 Sailplane Directory". Soaring Magazine. Soaring Society of America. p. 94.
  3. ^ a b c d Lednicer, David (2010). "The Incomplete Guide to Airfoil Usage". Archived from the original on 20 April 2010. Retrieved 1 July 2011.
  4. ^ a b Finnish Aviation Museum (2009). "PIK 16c Vasama". Retrieved 17 July 2011.
  5. ^ a b "Sport and Business". Flight International. 17 August 1961. p. 212. Retrieved 12 April 2013.
  6. ^ "Sport and Business". Flight International. 23 August 1962. p. 280. Retrieved 12 April 2013.
  7. ^ Shenstone, B.S.; K.G. Wilkinson (1963). The World's Sailplanes:Die Segelflugzeuge der Welt:Les Planeurs du Monde Volume II (in English, French, and German) (1st ed.). Zurich: Organisation Scientifique et Technique Internationale du Vol a Voile (OSTIV) and Schweizer Aero-Revue. pp. 74–75.

Bibliography

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