Introduced in Update "Direct Hit", the YAH-64 is a two-seat, twin-engine ground attack helicopter with the gunner (front) and pilot (rear) sitting in tandem, similar to the AH-1 Cobra attack helicopter. Army attack helicopter anti-armour weaponry. However, as the still-in-development air-to-ground missile (AGM-114) Hellfire promised better range and lethality than the TOW ATGM, the anti-tank missile armament specification was later changed to 16 AGM-114 Hellfires, which became the mainstay of the U.S. Army intended that the YAH-63 would be armed with a 30 mm cannon and 16 TOW anti-tank guided missiles (ATGMs). In 1976, Hughes' YAH-64 prototype was chosen over Bell's YAH-63 prototype, primarily due to its more damage-tolerant four-blade main rotor and more stable landing gear layout. Hughes' prototype YAH-64 first flew on September 30, 1975, whereas Bell's prototype YAH-63 first flew on October 1, 1975. Department of Defense chose Bell (also known as the Bell Helicopter Company) and Hughes (later acquired by McDonnell Douglas, which made it a subsidiary and renamed it McDonnell Douglas Helicopter Systems) as the final candidates for the AAH program, where both companies were instructed to construct their prototype helicopters for flight testing. Bell, the Boeing Vertol/Grumman group, Hughes, Lockheed Martin, and Sikorsky all submitted proposals for the new AAH program. Army envisioned an attack helicopter with the requirements of a lower minimum top speed of 269 km/h, a twin-engine configuration for better survivability, heavier weaponry, and a longer combat radius than the existing AH-1 Cobra attack helicopter already in service. Drawing from the experience of the Vietnam War, the U.S. Army launched the Advanced Attack Helicopter (AAH) program on August 17, 1972. Army's Advanced Aerial Fire Support System (AAFSS) program on August 9, 1972, as a result of its huge airframe and poor all-weather performance, the U.S. Following the cancellation of the Lockheed AH-56 Cheyenne from the U.S. The Hughes YAH-64 was the prototype for the successful AH-64 Apache series attack helicopter, which is in service in numerous countries across the world.
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