Hispano-Suiza Model 8 Ca
In 1917 Hispano-Suiza developed the Model 8 Ca, which featured an innovative cast-aluminum cylinder construction with internal water passages. It also had a 37 mm Puteaux cannon mounted between the cylinder banks that could fire through the hollow propeller shaft. French ace Georges Guynemer used the first of these “moteurs-canon,” or cannon engines, on a SPAD XII and shot down one enemy aircraft. French aces Charles Nungesser and Rene Fonck also used cannon-equipped SPADs.
The cannon fired only one shot at a time, an extreme disadvantage in combat. Development of the cannon engines continued through the Hispano-Suiza Model K, an experimental engine designed to carry a fully automatic 37 mm cannon.
Transferred from the U.S. Army Air Corps
Type:reciprocating, 8 cylinders, V-type, liquid cooled
Power rating:164 kW (220 hp) at 2,100 rpm
Displacement:11.8 L (719 cu in)
Weight:213 kg (470 lb)
Manufacturer:La Société Hispano-Suiza, Seine et Oise, France
Transferred from the War Department, Air Corps, Materiel Division, Dayton, Ohio.
Weight: 213 kg (470 lb)