Turboshaft engine

Details Turboshaft engine Turboshaft engine

F - Mech Eng,Light,Heat,Weapons

02

C

60/136, 60/153

F02C 6/00 (2006.01) F02C 3/067 (2006.01) F02C 3/113 (2006.01) F02C 9/16 (2006.01)

Patent

CA 1069710

TITLE TURBOSHAFT ENGINE INVENTORS Marcus S. Chappell Douglas A.J. Millar ABSTRACT OF THE DISCLOSURE An improvement in torque characteristics is provided for a turboshaft engine of the type having a compressor rotor driven by a gas generator turbine that is mechanically independent of the power turbine. The improvement comprises a rotatable compressor stator casing which is interconnected with the power turbine rotor to allow rotation of the compressor casing in the same direction as the compressor rotor at a lower speed. At reduced output shaft speed, the relative speed between the compressor rotor blades and stator blades is increased for increased gas generator output and hence torque, while the compressor rotor speed remains constant.

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