Contra-rotating fan engine

Details Contra-rotating fan engine Contra-rotating fan engine

1990-09-07

1992-04-14

Casaregola, Louis J.

Power plants

Reaction motor

Interrelated reaction motors

60268, 415 79, F02K 300

Patent

active

051036355

ABSTRACT:
A gas turbine engine intended for use as an aircraft engine which includes a gas generator which supplies interdigitated, contra-rotating radially inner and outer low-speed power turbines driving forward mounted contra-rotating front and rear fans, the gases flowing through the gas generator from the rear of the engine towards the front, and then flowing in a rearward direction through the power turbines. The front fan is driven by the radially inner power turbine via a central shaft extending towards the front of the engine and supporting a disc carrying the front fan, and the rear fan is driven by the radially outer power turbine via a forwardly extending drum which is rotatably mounted between the central shaft and a stationary structure of the engine and which carries the rear fan. This structure permits the pod mounting of a high by-pass ratio engine under wing of an aircraft.

REFERENCES:
patent: 4765135 (1988-08-01), Lardellier
patent: 4796424 (1989-01-01), Farrar et al.

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