{{Short description|Military aircraft system}} [[File:US Navy 051201-N-3488C-029 An HH-60H Seahawk helicopter discharges countermeasure flares alongside the conventionally powered aircraft carrier USS Kitty Hawk (CV 63).jpg|thumb|250 px|DAS of HH-60H.]] [[File:Merkava4m-Windbreaker-0036a.jpg|thumb|250 px|Merkava Mk IVm with DAS Trophy.]] 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.<ref>Kyriakos Houliotis, Panagiotis Oikonomidis, Periklis Charchalakis, Elias Stipidis. (2018). Mission-Critical Systems Design Framework / Advances in Science, Technology and Engineering Systems Journal, Vol. 3, No. 2, 128-137.</ref>

==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)

==References== {{Reflist}}

{{DEFAULTSORT:Defensive Aids System}} Category:Military technology {{Mil-stub}}