Developed under a 1953 U.S. Navy contract, the T58 was GE's first small gas turbine aircraft engine. Its first flight took place in 1957 in a modified Sikorsky HSS-1F helicopter powered by two YT58 ...
Sikorsky Aircraft has 63 CH-53K “King Stallion” heavy-lift helicopters in production and assembly in Stratford, Conn. The U.S. Navy issued a $10.85-billion contract to Sikorsky Aircraft Corp. for as ...
Because of their unique versatility in aerial transportation, helicopters are some of the most important machines of the modern era. Capable of vertical take-off and landing, helicopters are used in ...
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