Fluid flow reversing apparatus

Details Fluid flow reversing apparatus Fluid flow reversing apparatus

1986-12-09

1988-03-22

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Working fluid bypass

602262, F02C 306

Patent

active

047325356

ABSTRACT:
In a multi stage ducted fan or ducted propeller gas turbine engine, a fan flow exit path is provided in the cowl between axially adjacent stages of blades. The stage of blades downstream of the exit are each pivotable to attitudes which on continued rotation of the stage, induces a reverse flow of ambient air into the duct via the nozzle. The normal and reversed airflows meet under the exit path and pass therethrough to atmosphere. The need for blocker doors in the duct is obviated and energy is imported to the fan air passing through the exit by both stages of blades.

REFERENCES:
patent: 3068646 (1962-12-01), Fletcher
patent: 3267668 (1966-08-01), Erwin
patent: 3434288 (1969-03-01), Petrie
patent: 3620022 (1971-11-01), Beale
patent: 3824784 (1974-07-01), Kitson et al.

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