Vertical Gyro Control, US Air Force Type E-4 Autopilot/A-12 Gyrosyn, 656518 F4U Corsair It was used in conjunction

It was used in conjunction with suitable beacons for night landing of parachute troops

thinking it was an early vintage flight helmet

was a pleasant experience for aircrews conditioned to gyros of World War II vintage

and engines

See the photo of the Sherman Tank with the driver's and assistant driver's hatches open

Vertical Gyro Control, US Air Force Type E-4 Autopilot/A-12 Gyrosyn, 656518 F4U Corsair It was used in conjunctionHere is a Vertical Gyro Control of the Sperry A 12 Gyrosyn Automatic Pilot, known in the US Air Force as the Type E 4 autopilot system during the late 1940's and 1950's. The Sperry part number is 656518 and labeled for a Boeing aircraft specification. When electrically powered and in flight, the gyro produced vertical attitude signals which were amplified and transmitted to the autopilot system and indicators on the flight deck of the aircraft. The