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First helicopter tested by the USAAF. [1] 1941 Never 2 Sikorsky R-4: Sikorsky Aircraft Corporation: World's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces. [2] 1942 Unknown 131 Sikorsky H-5: Sikorsky Aircraft Corporation 1943 1945 300 Sikorsky R-6: Sikorsky Aircraft Corporation ...
The R-4 was the world's first large-scale mass-produced helicopter and the first helicopter used by the United States Army Air Forces, [1] the United States Navy, the United States Coast Guard and the United Kingdom's Royal Air Force and Royal Navy. In U.S. Navy and U.S. Coast Guard service, the helicopter was known as the Sikorsky HNS-1.
The linchpin of US Army tactics was the helicopters, and the protection of those helicopters became a vital role. [2] It became clear that unarmed troop helicopters were vulnerable against ground fire from Viet Cong and North Vietnamese troops, particularly as they approached landing zones to disembark or embark troops.
The S-52 was the first US helicopter with all-metal rotor blades. Initially a two-seater, it was developed into the four-seat S-52-2 and S-52-3. It was designated HO5S-1 by the U.S. Navy and Marine Corps, HO5S-1G by the Coast Guard, and YH-18A by the U.S. Army , and was used extensively by civil operators after being retired by the military.
It is the first member of the prolific Huey family, as well as the first turbine-powered helicopter in service with the United States military. Development of the Iroquois started in the early 1950s, a major impetus being a requirement issued by the United States Army for a new medical evacuation and utility helicopter.
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The United States Army first ordered Bell 47s in 1948 under the designation H-13. These would later receive the name Sioux. [3] Initially, the United States Navy procured several Bell 47s, designated HTL-1, between 1947 and 1958. The United States Coast Guard evaluated this model, and procured two HTL-1s for multi-mission support in the New ...
List of United States Air Force aircraft designations (1919–1962) List of United States Navy aircraft designations (pre-1962) List of United States Army aircraft designations (1956–1962) List of United States Tri-Service aircraft designations; List of U.S. DoD aircraft designations; List of undesignated military aircraft of the United States