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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
Project Mercury was the first human spaceflight program of the United States, running from 1958 through 1963. An early highlight of the Space Race, its goal was to put a man into Earth orbit and return him safely, ideally before the Soviet Union.
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.
On December 10, 2019, the United States Space Force was formed as the world's only independent space force, with 8600 military personnel [2] and 77 spacecraft. [3] Operation Hardtack I. Operation Hardtack I was a series of nuclear tests carried out by the United States Government in 1958. A major facet of these tests was three high-altitude ...
While the Space Corps proposal failed in the senate, in 2019, the United States Space Force was signed into law, with Air Force Space Command becoming the United States Space Force and elevated to become the sixth military service in the United States Armed Forces.
Helicopter armament and tactics were changed to account for a less-permissive flight environment. Anti-tank missiles, such as the SS.11 and the Aérospatiale SS.12/AS.12 were developed and mounted on French military helicopters. In turn, the United States adapted its BGM-71 TOW for firing from helicopters and eventually developed the AGM-114 ...
In the 1962 unification of United States military aircraft designations, the USMC examples were redesignated from HR2S-1 to CH-37C. At the time of delivery, the CH-37 was the largest helicopter in the Western world and it was Sikorsky's first twin-engine helicopter.