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SZD-11 Albatros

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Polish single-seat glider, 1954
SZD-11 Albatros
Role Glider aircraftType of aircraft
National origin Poland
Manufacturer SZD
J. Niespał
Designer Justyn Sandauer
First flight 14 September 1954
Number built 1
Developed from SZD-8 Jaskółka

The SZD-11 Albatros was a single-seat glider aircraft that was designed and built in Poland at Szybowcowy Zakład Doświadczalny - Glider Experimental Works in Bielsko-Biała in 1954. Only one prototype was completed and flown.

Development

Based on a fuselage of the SZD-8 Jaskółka, the SZD-11 Albatros was designed to investigate the performance of aircraft during flight in thermal lift. The main designer was Justyn Sandauer, and the main constructor was J. Niespał. With wings of greater span, and reduced empty weight, the wing loading was reduced, markedly improving the climb performance over the 16m-span SZD-8 Jaskółka. Three more SZD-11 aircraft were planned with fixed trailing edges and no flaps, but only the prototype was completed. The SZD-11 first flew on 14 September 1954, flown by Tadeusz Góra.

Specifications (SZD-11 Albatros)

Data from http://www.piotrp.de/SZYBOWCE/dszd11.htm

General characteristics

  • Crew: 1
  • Length: 7.6 m (24 ft 11 in)
  • Wingspan: 18 m (59 ft 0 in)
  • Height: 1.41 m (4 ft 7 in)
  • Wing area: 17.7 m (191 sq ft)
  • Aspect ratio: 18.3
  • Airfoil: NACA 23012A
  • Empty weight: 208 kg (459 lb)
  • Gross weight: 353 kg (778 lb)

Performance

  • Maximum speed: 230 km/h (143 mph, 124 kn)
  • Stall speed: 52 km/h (32 mph, 28 kn)
  • Maximum glide ratio: 26 at 74 km/h (46 mph/40 kts)
  • Rate of sink: 0.70 m/s (138 ft/min) at 61 km/h (38 mph/33 kts)

See also

Aircraft of comparable role, configuration, and era

References

  1. ^ (in Polish) Babiejczuk, Janusz and Grzegorzewski, Jerzy. Polski przemysł lotniczy 1945-1973 (Polish aerospace industry 1945-197). Warsaw: Wydawnictwo MON, 1974, p. 120
  • Coates, Andrew. “Jane's World Sailplanes & Motor Gliders new edition”. London, Jane's. 1980. ISBN 0-7106-0017-8
  • Taylor, J. H. (ed) (1989) Jane's Encyclopedia of Aviation. Studio Editions: London. p. 29

External links

Polish post-1945 gliders
Instytut Szybownictwa
Szybowcowy Zakład Doświadczalny
/ PZL Bielsko-Biała / Allstar PZL Glider
Politechnika Warszawska
Margański & Mysłowski
PZL Krosno
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