Heinrich Focke

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"In 1952, Focke and other members of his former design team were employed by Brazil's Centro Técnico Aeroespacial (CTA), at the time the air force's technical center, to develop a Convertiplane, the "Convertiplano", which drew heavily on Focke's wartime work on the Fa 269. Also recruited was Bussmann, a transmission specialist formerly of BMW. The Convertiplano was built using the fuselage and wings of a Supermarine Spitfire Mk 15, which was believed to be one delivered to Argentina as a sales example. Britain refused to supply the Armstrong Siddeley Double Mamba engine originally selected and the design was altered to accept a mid-mounted 2200 hp Wright engine instead as used in the Lockheed Constellation, which necessitated a redesign of the transmission due to the increase in weight and vibration. Some 40 workers and US$8 million were devoted to the project, and more than 300 takeoffs were achieved.

While working at the CTA Focke also developed the BF-1 Beija-flor (hummingbird) two-seater light helicopter from 1954, which made its first flight at São José dos Campos on 22 January 1959. The BF-1 was similar in design to the Cessna CH-1, with a 225 hp Continental E225 engine in the nose and the rotor mast running vertically between the front seats. An open structure tubular steel tail boom carried a pair of tail surfaces and a small tail rotor. The BF-2 was developed from this and first flew on 1 January 1959, and performed an extended flight-testing campaign until it was damaged in an accident. It is thought that further work on the Beija-flor was then abandoned.

Focke returned permanently to Germany in 1956 and began developing a three-seater helicopter named the "Kolibri" ("hummingbird") at the Borgward company in Bremen, with its first flight taking place in 1958.

Focke died in Bremen on 25 February 1979."

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