The first fighter to be designed by Ernst Heinkel as chief designer for the Hansa- und Brandenburgische Flugzeug-Werke, the KF two-seater appeared early in 1916, and was a two-bay, twin-boom biplane powered by a 150hp Benz Bz III six-cylinder water-cooled engine installed as a pusher and driving a two-bladed pro-peller between the tailbooms. The KF was of wooden construction with plywood-covered fuselage nacelle and tailbooms, and armament was intended to consist of a single 7.92mm Parabellum machine gun on a flexible mounting in the forward cockpit. Work on the KF was discontinued as it offered no advance in performance over the similarly-configured Ago C.I which served in the reconnaissance role.
Max take-off weight: 1290 kg / 2844 lb
Empty weight: 760 kg / 1676 lb
Wingspan: 11.60 m / 38 ft 1 in
Length: 8.48 m / 28 ft 10 in
Wing area: 38.6 sq.m / 415.49 sq ft
Max. speed: 140 km/h / 87 mph