In 1942 NACA made a reasearch about extending the range of the AAF bombers using tank wing trailers and gliders. Here the figures of the proposals, taken form the following report.
A new post is up at RetroMechanix.com reproducing several early postwar reports on convertible aircraft (vehicles which can function either as a direct lift, rotary aircraft or as fixed wing airplane, with conversion from one to the other type as required) found in NACA files at the National...
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