SZD-14x Jaskółka M: Difference between revisions
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[[Category:Polish sailplanes 1950-1959]] |
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[[Category:PZL gliders|SZD14]] |
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[[Category:PZL aircraft|SZD14]] |
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Revision as of 17:07, 6 February 2010
| SZD-14x Jaskółka M | |
|---|---|
| Role | Glider |
| National origin | Poland |
| Manufacturer | PZL Bielsko |
| Designer | Władysław Okarmus & Tadeusz Kosti M.Sc.[1] |
| First flight | 23 July 1954[1] |
| Number built | 1[1] |
| Developed from | SZD-8 Jaskółka[1] |
The SZD-14x Jaskółka M (Szybowcowym Zakladzie Doświadczalnym - gliding experimental department) was a single-seat glider designed and built in Poland from 1954[1].
Development
The SZD-14x Jaskółka M was developed from the SZD-8bis Jaskółka for research into the construction, control and characteristics of 'V' or butterfly tail surfaces[2]. Using the airframe of the second prototype SZD-8 a 'V' tail was added to the rear fuselage, with arrangenments for the balance of the surfaces and the angle between them to be adjusted as required[1].
Flown by Adam Dziurzyński at Bielsko the SZD-14 was found to be easy to fly with no vices, giving no indication that the tail layout was unconventional[1]. During spinning tests the rear fuselage was almost torn off but Dziurzyński managed to regain control and recovered the aircraft to land safely[2].
Up to the time of the SZD-14's debut, the 'V' tail system was very rare with few aircraft using the system devised by Eng. Rudlickiego and demonstrated on a liscence-built Hanriot HD.14 bi-plane in the early 1930's[3].
Specifications (SZD-14x Jaskółka M)
Data from http://www.piotrp.de/SZYBOWCE/pszd14.htm
General characteristics
- Crew: 1
- Aspect ratio: 18.8:1
Performance
- Maximum glide ratio: 26.3 @ 80 km/h (43.2 kts / 49.7 mph)
See also
Aircraft of comparable role, configuration, and era
References
- Taylor, J. H. (ed) (1989) Jane's Encyclopedia of Aviation. Studio Editions: London. p. 29
- Cynk, Jerzy B.. “Polish Aircraft 1893 – 1939”. London, Putnam. 1971. ISBN 0 370 00085 4
- Simons, Martin. Sailplanes 1945-1965 2nd revised edition. EQIP Werbung und Verlag G.m.b.H.. Königswinter. 2006. ISBN 3-9807977-4-0