The USN’s first rotary-wing aerocraft, the Pitcairn XOP-1 autogyro, pictured in flight over the aircraft carrier Langley (CV 1) in 1931.
The USN’s first rotary-wing aerocraft, the Pitcairn XOP-1 autogyro, pictured in flight over the aircraft carrier Langley (CV 1) in 1931.