Fluid outlet duct

Details Fluid outlet duct Fluid outlet duct

1989-08-14

1991-08-13

Stout, Donald E.

Power plants

Reaction motor

Interrelated reaction motors

60242, 60263, 60271, 60 3983, 23926537, F02K 304

Patent

active

050385607

ABSTRACT:
A cooling air outlet duct for a heat exchanger of a gas turbine engine is provided with a rotatable wall portion. The rotatable wall portion is rotatable about a pivot positioned at its upstream end so that the total flow area between the downstream end of the rotatable wall portion and a first wall of the fluid outlet duct and the fluid flow rate may be varied to obtain relatively high exit velocities for the cooling air discharging from an exit nozzle in a fan casing to give good thrust recovery. This produces a lightweight and uncomplicated valve for the fluid outlet duct.

REFERENCES:
patent: 3769797 (1973-11-01), Stevens
patent: 4086761 (1978-05-01), Schaut et al.
patent: 4254618 (1981-03-01), Elovic
patent: 4310121 (1982-01-01), Basinski, Jr.
patent: 4463902 (1984-08-01), Nightingale
patent: 4474001 (1984-10-01), Griffin et al.
patent: 4791782 (1988-12-01), Seed

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