The Akaflieg Berlin B 9 was a twin-engined[1] experimental aircraft, developed by Akaflieg Berlin and Flugtechnische Fachgruppe in the 1940s.
It was designed to examine the benefits of having a pilot in a prone position.
The aircraft was flown in 1943, but was eventually abandoned.
Data from FFG-Berlin B9[citation needed]General characteristics Performance
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