A defensive aide suite (DAS) is a military aircraft system which defends it from attack by surface-to-air missiles, air-to-air missiles and guided anti-aircraft artillery. A DAS typically comprises chaff, flares, and electronic countermeasures combined with radar warning receivers to detect threats. On some modern aircraft (Lockheed Martin F-35 Lightning II), the entire system is integrated and computer-controlled, allowing an aircraft to autonomously detect, classify and act in an optimal manner against a potential threat to its safety. A Defensive Aid Suite (DAS) system can be used in conjunction with the NGVA architecture in combat vehicles as well.
See also Active protection system Drozd – The first attempt at making an active protection system by the Soviet Union. Arena – An updated and more effective version of Drozd. Zaslon – Ukrainian DAS for use on BM Oplot tanks. Iron Fist – Another Israeli active protection system developed by Israel Military Industries. Trophy (countermeasure)
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