TBD Devastator

TBD Devastator
US Navy TBD-1 Torpedo Squadron Six (VT-6), from USS Enterprise (CV-6), in about 1938
Role	Torpedo bomber
National origin	United States
Manufacturer	Douglas Aircraft Company
First flight	15 April 1935
Introduction	3 August 1937
Retired	1942 (from active service) 1944 (completely)
Primary user	United States Navy
Produced	1937–1939
Number built	130

The Douglas TBD Devastator was an American torpedo bomber of the United States Navy, ordered in 1934, it first flew in 1935 and entered service in 1937. At that point, it was the most advanced aircraft flying for the Navy and possibly for any navy in the world. However, the fast pace of aircraft development quickly caught up with it, and by the time of the Japanese attack on Pearl Harbor the TBD was already outdated.

The Devastator performed well in some early battles, but earned notoriety for its catastrophically poor performance in the Battle of Midway, in which the 41 Devastators launched during the battle produced zero torpedo hits and only six survived to return to their carriers. Vastly outclassed in both speed and maneuverability by the Mitsubishi Zero fighters they faced, most of the force was wiped out with little consequence except to distract the Zeros from the much more capable (and survivable) SBD Dauntless dive bombers that eventually sank four Japanese carriers and a heavy cruiser. Although a small portion of the Devastator's dismal performance was later attributed to the many well-documented defects in the US Mark 13 torpedo, the aircraft was immediately withdrawn from frontline service after Midway, being replaced by the Grumman TBF Avenger.

Ordered on 30 June 1934, and entered into a US Navy competition for new bomber aircraft to operate from its aircraft carriers, the Douglas entry was one of the winners of the competition. Other aircraft ordered for production as a result of the competition included the Northrop BT-1 which would evolve into the SBD Dauntless, the Brewster SBA and the Vought SB2U Vindicator.

The XTBD Devastator, which flew for the first time on 15 April 1935, marked a large number of "firsts" for the US Navy. It was the first widely used carrier-based monoplane as well as the first all-metal naval aircraft, the first with a totally enclosed cockpit, the first with power-actuated (hydraulically) folding wings and in these respects the TBD was revolutionary. A semi-retractable landing gear was fitted, with the wheels designed to protrude 10 in (250 mm) below the wings to permit a "wheels-up" landing which might limit damage to the aircraft. A crew of three was normally carried beneath a large "greenhouse" canopy almost half the length of the aircraft. The pilot sat in front; a rear gunner/radio operator took the rearmost position, while the bombardier occupied the middle seat. During a bombing run, the bombardier lay prone, sliding into position under the pilot to sight through a window in the bottom of the fuselage, using the Norden Bombsight.

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