GT-1 (missile)

The GT-1 (Glide Torpedo 1) was an early form of stand-off weaponry developed by the United States Army Air Forces during World War II. Intended to deliver an aerial torpedo at a safe range from the launching aircraft, the weapon proved successful enough in testing to be approved for operational use, and the GT-1 saw limited use in the closing stages of the war.

Design and development The GT-1 was derived from the GB-1 series of glide bombs, developed by Aeronca for the United States Army Air Forces.Parsch 2003 The weapon's airframe was inexpensive and simply designed, with a basic wing and twin tails attached to a cradle for carrying the payload. The flight path of the GT-1 was determined by a preset autopilot that kept the weapon on a steady course after release.

The GT-1 was usually released from its carrier aircraft at an altitude of ; this provided a standoff range of as much as under ideal conditions.Esquire 1947; Volume 28, p.70. The GT-1's warload consisted of a Mark 13 Mod 2A aerial torpedo. The GT-1 was fitted with a paravane, trailing below the main body of the craft; upon the paravane's striking the surface of the water, explosive bolts would fire to release the torpedo, which would then execute a preset search pattern to locate and destroy its target.

Operational history Initially tested during 1943, the GT-1 proved to be successful,Daso 1997, p.82. and was issued to a single operational unit for service.Goebel 2010 Launched from North American B-25 Mitchell bombers,Hanle 2011 the GT-1 saw brief operational service late in the war;Cate and Craven 1958, p.259. three missions are known to have been flown using the weapon from Okinawa in late 1945. On one mission, against Kagoshima, eleven of thirteen GT-1s launched successfully entered the water; three explosions were reported, near a fleet carrier, a light carrier, and a freighter. The Boeing B-17 Flying Fortress was also capable of carrying the GT-1.Army Ordnance, Volume 30, 1946. American Defense Preparedness Association. p.384.

Following the end of World War II, the aerial torpedo rapidly fell out of favor as a weapon of war against surface ships, and the 'GT' category of weapons was abolished in 1947.Mann 2008, p.256.

GT-1 (missile)

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