Flight, December 1926

The Paris Aero Show 1926

VOJENSKA TOVARNA NA LETADLA

   THE Military Aircraft Factory of Prague, whose chief designer is M. Smolik, will be represented by no less than three complete aeroplanes - the S.16, the S.18, and the S.20.
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   The Vojenska S.20 is a single-seater fighter fitted with a 300 h.p. Hispano-Suiza engine. The wing design and construction are normal, the machine having a top plane of slightly greater span and chord than the bottom, in order to improve the visibility. Wood construction is employed in the wings, and ailerons are fitted to the lower wing only.
   The fuselage is of steel-tube construction, specially designed to facilitate repairs. The engine bearer is of steel tube and Duralumin, and supports a Skoda-built Hispano-Suiza of 320 h.p. at 1,800 r.p.m. The petrol tank, with a capacity of 215 litres, or sufficient for 2 1/4 hours, is contained inside the fuselage. The tank is protected by a rubber jacket. A service tank in the top plane has a capacity of 35 litres, or sufficient for 22 minutes at full throttle. Two Vickers guns lie above the engine, and are fired from the control stick. The S.20 is also equipped with a Heineke parachute. The Lamblin radiators are fitted to the undercarriage legs.
   Characteristics of the Vojenska S.20.- Span, upper plane, 9-7 m.; lower plane, 8-2 m.; length overall, 7-441 m.; wing area, 18-4 sq. m.; weight, empty, 728 kgs.; useful load, 145 kgs.; fuel, 175 kgs.; total loaded weight, 1,048 kgs. Speed at ground level, 257 km. h.; speed at 2,000 m., 261 km./h.; climb to 1,000 m. in 1-5 mins.; to 5,000 m in 13-8 mins.