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Bleriot-SPAD S.20

Страна: Франция

Год: 1918


Bleriot - Bleriot-75 Mammoth - 1919 - Франция<– –>Bleriot-SPAD - S.22 - 1919 - Франция

W.Green, G.Swanborough The Complete Book of Fighters

SPAD S.XX France
   Late in 1917, Herbemont designed a new fighter with a monocoque fuselage and a 37-mm Puteaux cannon mounted in the Vee of a 300 hp Hispano-Suiza 8G engine and firing through the propeller shaft, as on the S.XII. This, the S.XVIII (the SFA designation being Spa.XVIII Cal-2), was under construction in April 1918, and was described as a monoplace protege, being intended to be flown as a single-seater in combat, but having provision for a second crew member. Both wings were two-spar structures, the upper having pronounced sweepback, and the single interplane struts were of broad-chord I-type. Development problems with the 300 hp engine-cannon combination led to revision of the design to take a standard 300 hp direct-drive HS 8Fb engine and an armament of twin 7,7-mm Vickers guns, the designation being changed to S.XX and the prototype appearing in August 1918. Official trials were conducted in the following month and the S.XX was ordered into production with a planned output of 200 aircraft monthly. Initially a Lewis gun was provided for the second occupant, whose function was now to fend off stern attacks by enemy fighters, and later twin Lewis guns on a T.O.3 mounting were provided. Production was scaled down with the Armistice, and only 95 S.XXs were built, these remaining in French service until 1923. One example was purchased by Japan in October 1921, being designated Hei 2.

Max speed, 142 mph (229 km/h) at 6,560 ft (2 000 m).
Time to 6,560 ft (2 000 m), 4.6 min.
Loaded weight, 2,438 lb (1106 kg).
Span, 32 ft 2 1/2 in (9,80 m).
Length, 23 ft 11 1/2 in (7,34 m).
Height, 9 ft 5 in (2,87 m).
Wing area, 312 sq ft (29,00 m2).

W.Green, G.Swanborough - The Complete Book of Fighters
An S.XX of the 6* Escadrille of the 2e Regiment d‘Aviation de Chasse, circa 1922.
W.Green, G.Swanborough - The Complete Book of Fighters
The prototype S.XX, which appeared in August 1918
Журнал - Flight за 1919 г.
THE SPAD-HERBEMONT TWO-SEATER MONOCOQUE: A Military biplane, 300 h.p. Hispano-Suiza, on which the French pilot, Sadi Lecointe, made a record altitude (solo) flight of 89,200 ft. He also beat the speed record (with passenger) with a speed of 142.8 m.p.h.
W.Green, G.Swanborough - The Complete Book of Fighters
The series S.XX which differed primarily in having an enlarged vertical tail.
Форум - Breguet's Aircraft Challenge /WWW/
Журнал - Flight за 1919 г.
The photo is of a 300 h.p. Spad, flown by Sadi Lecointe.
Журнал - Flight за 1919 г.
SCHNEIDER CUP: The Spad at anchor. This machine looks very business-like, and should have put up a good performance but for a leaky float. The top plane is swept back, and is of shorter span than the bottom one.
W.Green, G.Swanborough - The Complete Book of Fighters
The series production SPAD S.XX fighter.