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NORTHROP AGM-136A TACIT RAINBOW

Posted 8/3/2011 Printable Fact Sheet
 
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Northrop AGM-136A
DAYTON, Ohio -- Northrop AGM-136A Tacit Rainbow in the Cold War Gallery at the National Museum of the U.S. Air Force. (U.S. Air Force photo)
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The Northrop AGM-136A was a jet-powered missile developed in the early 1980s as a way to suppress enemy air defenses. Conceived under the Tacit Rainbow project, the low-cost AGM-136A would be launched in "swarms" from bombers or fighters ahead of the main attacking force. On-board computers guided them independently to a pre-programmed area where they would search for enemy radars. When an AGM-136A detected signals radiating from the enemy's radar transmitter, it would attack.

During the Southeast Asia War, the North Vietnamese had defeated radar-seeking missiles by turning their radars off and on to avoid being hit. However, the AGM-136A could not be "fooled" so easily. As long as fuel remained, it could patrol until the radar resumed operations and attack again. Whether it destroyed the radars or just kept them turned off, Tacit Rainbow would suppress the air defenses long enough for the main attack to proceed unthreatened.

The first Tacit Rainbow air-launch occurred in July 1984, but the program was cancelled for budget reasons in 1991. The AGM-136A on display was used in airworthiness tests and presented to the Museum in August 1991.
TECHNICAL NOTES: 
Armament: WDU-30/B 40-lb. blast fragmentation warhead
Engine: Williams International F121 turbofan of 70 lbs. thrust 
Cruising speed: Subsonic
Supersonic Range: More than 50 miles
Span: 5 ft. 2 in.
Length: 8 ft. 4 in.
Body diameter: 2 ft. 3 in.
Weight: 430 lbs.

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