Variable pressure and variable air flow turbofan engines

Details Variable pressure and variable air flow turbofan engines Variable pressure and variable air flow turbofan engines

1996-08-27

1998-08-18

Casaregola, Louis J.

Power plants

Reaction motor

Method of operation

602261, F02K 302

Patent

active

057944326

ABSTRACT:
A variable cycle gas turbine engine has, in axial flow serial relationship, a fan assembly, a core engine, and an exhaust assembly. The core engine includes a compressor, a combustor, a high pressure turbine and a first shaft interconnecting the compressor and the high pressure turbine. The fan assembly is connected to a low pressure turbine by a second shaft which is coaxial with the first shaft. The fan assembly includes a plurality of variable pitch inlet guide vanes, variable pitch stator vanes, and variable pitch outlet guide vanes, the pitch of which are adjusted to regulate the airflow through the gas turbine engine and the pressure ratio across the fan assembly as controlled by the exhaust assembly.

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Csanady, G. T. Theory of Turbomachines McGraw-Hill, New York; 1964. p. 11.
Louary Aleid, et al., Variable Cycle Powerplants for a Mach 2.7 Supersonic Civil Transport, 1996, The American Society of Mechanical Engineers, New York, NY.
K. R. Bilwakesh, Evaluation of Range and Distortion Tolerance for High Mach Number Transonic Fan Stages, Jan. 1971, pp. 1, 17-25, vol. I, cover page and pages iii, v and vi, General Electric Company, Cincinnati, OH.

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