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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.
It was used by the United States Coast Guard. 1958 1961 175 Sikorsky SH-3 Sea King: ASW/SAR/utility helicopter Sikorsky Aircraft Corporation: used as the official helicopters of the President of the United States Marine One: 1959 1961 1500 Sikorsky S-61R: Medium-lift transport/SAR helicopter Sikorsky Aircraft Corporation
The Light Observation Helicopter (LOH) program was a United States Army program to evaluate, develop and field a light scout helicopter to replace the Army's aging Bell OH-13 Sioux. It gained impetus with the advent of the Vietnam War , and was aided by advances in helicopter technology, specifically the development of the turboshaft engine.
Closely related to the development of the Bell AH-1 is the story of the Bell UH-1 Iroquois transport helicopter—an icon of the Vietnam War and one of the most numerous helicopter types built. The UH-1 made the theory of air cavalry practical, as the new tactics called for US forces to be highly mobile across a wide area.
The first United States use of the armed helicopter in large-scale combat operations was during the Vietnam War. First the U.S. Army modified UH-1B 'Huey' helicopters, mounting machine guns and Folding Fin Aerial Rockets (FFAR) on struts parallel with the fuselage. Eventually, the U.S. Army would upgrade the engine and rotor to the UH-1C model ...
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.
An AH-1 SuperCobra (left) and UH-1Y Venom (right) operated by the United States Marine Corps. Among the first practical uses of helicopters when the Sikorsky R-4 and R-5 became available to British and American forces was deployment from navy cruisers and battleships, at first supplementing and later replacing catapult-launched observation ...
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 ...