General Electric YT58-GE-2A Cutaway

General Electric YT58-GE-2A Cutaway aircraft engine at the New England Air Museum


Type:   Turboshaft
Turbine:   2x gas generator turbine stages + 1x free power turbine stage
Compressor:   10 stage axial-flow
Displacement:   176 cu. in
Weight:   285 lbs.
Power Output:   1,250 hp
Year:   1958
NEAM Id:   21
Location:   Civil Hangar

Courtesy of the National Museum of Naval Aviation

Born from a proposal to the U.S. Navy in 1953 for an advanced helicopter engine, the T58 first flew in February, 1957 and quickly gained popularity with helicopter manufacturers.

This early example powered a Kaman HU2K-1 Seasprite. Another engine of the same version was used in the Kaman K-16B experimental VTOL aircraft.

Variants of the the T58 were used in aircraft included:

  • Bell UH-1F, X-22
  • Boeing CH-46 Sea Knight
  • Sikorsky SH-3 Sea King, HH-3B/C/E/F, HH-52 Seaguard, S-61L/N, S-62, S-67, S-72

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