|Š-20 and Š-21|
|Number built||ca 118|
The Letov Š-20 was a fighter aircraft produced in Czechoslovakia during the 1920s.
Design and development
The Letov Š-20 was a conventional, single-bay biplane with unstaggered wings braced by N-struts. In overall appearance, it greatly resembled contemporary SPAD fighters. The fuselage and empennage were of welded steel tube construction and covered in fabric. The wings had a tubular metal spar but were otherwise wooden, and also fabric-skinned.
The Czechoslovakian Air Force bought 105 machines, and 10 examples were produced for Lithuania under the designation Š-20L. These remained in service until 1936 and 1935 respectively.
An Š-20 placed second in the single-engine category of the national President of the Republic air race in 1925, but fared better the following year. In the 1926 race, an Š-20 not only won this category ,but also set a new national airspeed record of 234 km/h (146 mph). This record was short-lived, however, since the prize for the fastest circuit was also won in an Š-20, and this raised the record to 245 km/h (153 mph).
A single prototype of an unarmed advanced trainer version was built as the Š-21, but this did not sell.
- Š-20 - initial production version
- Š-21 - trainer version with Hispano-Suiza 8Aa engine (1 built)
- Crew: One
- Length: 7.44 m (24 ft 5 in)
- Wingspan: 9.70 m (31 ft 10 in)
- Height: 7 m (23 ft 3.25 in)
- Wing area: 18.4 m2 (198 ft2)
- Empty weight: 728 kg (1,602 lb)
- Gross weight: 1,048 kg (2,306 lb)
- Powerplant: 1 × Škoda-built Hispano-Suiza 8Fb, 190 kW (260 hp)
- Maximum speed: 256 km/h (160 mph)
- Range: 528 km (330 miles)
- Service ceiling: 7,200 m (23,600 ft)
- Rate of climb: 6.0 m/s (1,190 ft/min)
- 2 × fixed, forward-firing .303 Lewis guns
- Related lists
|Wikimedia Commons has media related to Letov aircraft.|
- Taylor 1989, p. 573.
- Taylor 1969, p. 63.
- Němeček, Václav. Československá letadla. Prague: Naše Vojsko, 1968.
- Taylor, John W. R. and Jean Alexander. Combat Aircraft of the World. New York: G.P. Putnam's Sons, 1969. ISBN 0-71810-564-8.
- * Taylor, Michael J. H. Jane's Encyclopedia of Aviation. London: Studio Editions, 1989. ISBN 0-517-69186-8.