Letov Å -20
The aircraft Letov Š -20 is a single-engine single-seat biplane was designed as a fighter. The first flight of the machine took place in 1925.
History and construction
The Š - 20 was prepared in the Letov works in Letnany in Prague in Czechoslovakia. The design came from Alois Smolik. The chassis was rigid and had a tail skid. The wings were braced and braced with one N- stalk on both sides. The engine drove a two- bladed wooden propeller, which was aerodynamically matched with a great cover to the fuselage.
The hull was designed largely around and conventionally constructed with wood. From the machine first 105 machines for the Czechoslovak Air Force were built. Even in 1925 the Lithuanian Air Force also ordered ten pieces of the series Š -20L. This could be converted to a ski chassis to boot on snow and land can.
The machines in Czechoslovakia remained partly in use until 1936. The models in Lithuania were retired before 1935.
In addition to this variation, yet there was a 1927 version flown Š -20R with a modified fuselage. However, there was no mass production. Also in 1927 we upgraded a Š - 20 with a 353 kW payable Walter Jupiter engine. This machine also remained a single piece, but served as a prototype for the machine Letov Š -31. There is evidence that one of these two patterns has been made in 1927 for a short time the Polish Air Force for testing available.
A machine of this type is in the Aviation Museum Kbely, Prague.
Variants
- Š -20 - standard version Š -20M - revised version with abgespecktem rear fuselage (main production version for Czechoslovakia )
- Constructed export version for Lithuania, 10 - Š -20L
- Built version with further revised fuselage, 1 - Š -20R
- Built design with Created by Walter in Bristol Jupiter engine license, 1 - Š - 20J