Numerous other flight experiments were also conducted using the USS Langley as the testbed.  A Pitcairn XOP-1 (PCA-2) Autogiro can be seen here piloted by Lt. Alfred Pride in flight off the starboard bow of the USS Langley, while the carrier is underway, probably on September 23, 1931, when the XOP-1 became the first rotary-wing aircraft to land on an aircraft carrier.  (Smithsonian National Air and Space Museum, NASM A-47855)