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General Electric T58: Wikis


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T58s installed on a U.S. Coast Guard Sikorsky HH-3F
Type Turboshaft
National origin United States
Manufacturer GE Aviation
First run 1955
Major applications CH-46 Sea Knight
SH-2 Seasprite
SH-3 Sea King
Variants Rolls-Royce Gnome,

The General Electric T58 is an American turboshaft engine developed for helicopter use. First run in 1955, it remained in production until 1984, by which time some 6,300 units had been built. On July 1, 1959, it became the first turbine engine to gain FAA certification for civil helicopter use. The engine was license-built and further developed by de Havilland in the UK as the Gnome, and also manufactured by Alfa Romeo and the IHI Corporation.


Design and development

Development commenced with a 1953 US Navy requirement for a helicopter turboshaft to weigh under 400 lb (180 kg) while delivering 800 hp (600 kW). The engine that General Electric eventually built weighed only 250 lb (110 kg) and delivered 1,050 hp (780 kW) and was soon ordered into production. First flight was on a modified Sikorsky HSS-1 in 1957, and civil certification for the CT58 variant was obtained two years later.

The main production version of the engine was the T58-GE-10, developing 1,400 hp (1,044 kW). The most powerful version, the T58-GE-16 produces 1,870 hp (1,390 kW).[1]


Specifications (T58)


General characteristics

  • Type: Turboshaft
  • Length:
  • Diameter:
  • Dry weight:


  • Compressor:


See also

Related development

Related lists


  1. ^ [1]


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