US Army Transportation Museum Banner        
TC-SCOE

COLD WAR
AIRGEEP  |  AVRO CAR CYBERNETIC  |  DE LACKNER AEROCYCLE  |  DOAK 16 VZ
EXECUTIVE FLIGHT DETACHMENT  INTERSTATE  |  ROCKET BELT  |  TRAMWAY
CURTISS-WRIGHT GEM  |  PRINCETON GEM  |  M-29 WEASEL  |  ARCTIC  |  ANTARCTIC

THE PRINCETON GEM

   Between 1959 and 1962, the Army agree to help fund ongoing testing of a ground effects machine (GEM) which had been developed by Princeton University.  At that time the U.S. military had to type-classification for aircushion vehicles, and this became known simply as the Princeton GEM.

fabaric covered, saucer like, Princeton 'gem'

 

   The saucer-shaped GEM was constructed of steel tubing and aluminum ribs and covered with fabric.  It was 20 feet in diameter.  The aircushion was created by a main vertical-lift engine which drove a horizontally-mounted four-bladed wooden propeller.  The propeller drove air downward through a 19 foot nozzle in the saucer's bottom to create a peripheral air curtain.  A smaller engine and propeller in the horizontal tailfin provided forward propulsion.

   Though never produced by the Army, the craft provided a wealth of information about the mechanics of air-cushioned flight

 

 

Webmaster (804) 734-2551 | Accessibility | Link Disclaimer | Security Notice 15-May-2013 last edited