A USAF Convair XB-36 undergoing flight testing.
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A USAF Convair XB-36 undergoing flight testing.
A Convair XP5Y-1 seen on San Diego Bay the day of it's first flight - 18 April 1950
(U.S. Navy Photo)
Il-20 (1948) - Soviet attacker-bomber prototype. Got its first flight on 5th of December, 1948. Never continued because of jet aviation, high vibrations and stall risk when firing.
The first flying prototype of the Fisher XP-75 Eagle high-altitude strike fighter. Using the best liquid-cooled engine available, the Eagle was only barely more manueverable than the P-38 Lightning or the P-51 Mustang, and the project was cancelled in 1944.
The North American Aviation XB-70A Valkyrie.
The business end of a Douglas XTB2D Skypirate.
French Potez 41M prototype heavy bomber photographed in 1934
Northrop XB-35 in flight circa 1947