SFKB KB-4
Communications and training aircraft SFKB KB-4 "Tchutchuliga-II"
It was used also as a close reconnaissance and light bomber aircraft, but mainly was used in flying schools. 28 were produced in 1938-1940 by "Samoletna Fabrika Caproni Bulgarski" (engineer K. Kaligaris) in Kazanlyk. This biplane of mixed construction and fixed landing gear had two-blade propeller and dual control.
Specifications of KB-4: engine - 1 x Wright E1P-975 Whirlwind with Taunend's cowl (9 cyl., 220 hp) or later 1 x Walter Castor II; wing span - 11.54 m; length - 8.615; wing area - 31.87 sq.m; empty weight - 1070 kg; flying weight - 1480 kg; speed - 208 km/h (at the ground); rate of climb - 180 m/min; range - 700 km; ceiling - 6500 m; armament - 1 x 7.69mm Vickers F in the cockpit (for the observer); crew - 2.
It was used also as a close reconnaissance and light bomber aircraft, but mainly was used in flying schools. 28 were produced in 1938-1940 by "Samoletna Fabrika Caproni Bulgarski" (engineer K. Kaligaris) in Kazanlyk. This biplane of mixed construction and fixed landing gear had two-blade propeller and dual control.
Specifications of KB-4: engine - 1 x Wright E1P-975 Whirlwind with Taunend's cowl (9 cyl., 220 hp) or later 1 x Walter Castor II; wing span - 11.54 m; length - 8.615; wing area - 31.87 sq.m; empty weight - 1070 kg; flying weight - 1480 kg; speed - 208 km/h (at the ground); rate of climb - 180 m/min; range - 700 km; ceiling - 6500 m; armament - 1 x 7.69mm Vickers F in the cockpit (for the observer); crew - 2.