Variable area aircraft air intake

Details Variable area aircraft air intake Variable area aircraft air intake

1987-07-14

1988-11-08

Stout, Donald E.

Power plants

Reaction motor

Interrelated reaction motors

602263, 60229, 60 39161, 137 151, F02K 302

Patent

active

047826592

ABSTRACT:
One problem associated with aircraft using variable cycle engines is how to provide an air intake which is sufficiently large to be able to supply air to both the first and second compressors of the engine during the parallel flow mode and sufficiently small to minimize aerodynamic drag when the engines are operated in the tandem flow mode during supersonic forward flight. This invention overcomes this problem by providing an air intake which combines a blocker door covering a second portion of the duct which communicates with the second compressor and a means of varying the inlet area of the duct such that the area is maximized when the engines are required to operate in the parallel flow mode and minimized during series flow operation.

REFERENCES:
patent: 3430640 (1969-03-01), Lennard
patent: 3913321 (1975-10-01), Snell
patent: 4007891 (1977-02-01), Sorensen et al.
patent: 4038818 (1977-08-01), Snell
Space/Aeronautics, "Inlets for Supersonic Aircraft", May 1967, pp. 92-99.

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