Borgward Kolibri
The Borgward - Focke BFK -1 "Hummingbird " was a multi-purpose helicopter dreisitziger of Carl FW Borgward GmbH Automobil-und Motoren -Werke in Bremen- Sebaldsbrück.
History
The Hummingbird Professor Henrich Focke designed as the first independently developed in Germany helicopter type after the Second World War. The first flight of the first prototype designated as a hummingbird I took place on July 8, 1958. There was also a second airworthy copy built, which already had envisaged for the series production full fairing the hull. Whether this machine, however, is actually flown, can not be detected.
Construction
The structural design of the Hummingbird with a steel pipe lattice fuselage was conventional. The body of the prototype was undisguised, but what should be changed in the standard version. The tail boom was at the end of a V-tail, on the two peaks in each case a propeller should produce the torque compensation. The main rotor had three blades with a steel pipe as the core, which was covered with plywood for shaping.
The drive consisted of an air-cooled six - cylinder boxer engine Lycoming VO -435 - A1B with an output of 191 kW (260 hp). The fuel tank with a capacity of 180 l was located behind a firewall.
Instead of two passengers could be transported outside and inside each alternative a stretcher. It was also provided to operate the machine for of Spray in agriculture. The external load carrying capacity was 300 kg.
Use
Only two prototypes were built and abandoned the development after the bankruptcy of Borgward 1961.
Whereabouts
The two helicopters were used in the Bremen airport fire department for training purposes and for the most part destroyed in the process. Parts of the two machines are on display at the Helicopter Museum Biickeburg.