W
Wingknut
Guest
Patent for variable-geometry aircraft: biplane on take-off / landing but featuring an upper wing which can be retracted for high-speed flight - here illustrated as applied to a bomber-type design.
Both wings of very different planforms and aerofoil sections: “The speed wings are preferably short, stubby wings of small area, with correspondingly high wing loading and of low camber to provide maximum lift with minimum drag-at the high speed for which they are intended. The high lift wings are preferably of greater area and higher camber to provide maximum lift at the lower take-off and landing speeds.”
Filed by one Carl Roe 20th November 1942, https://www.google.com/patents/US2410239
Both wings of very different planforms and aerofoil sections: “The speed wings are preferably short, stubby wings of small area, with correspondingly high wing loading and of low camber to provide maximum lift with minimum drag-at the high speed for which they are intended. The high lift wings are preferably of greater area and higher camber to provide maximum lift at the lower take-off and landing speeds.”
Filed by one Carl Roe 20th November 1942, https://www.google.com/patents/US2410239