Power plants – Reaction motor – Interrelated reaction motors
Patent
1987-05-07
1988-11-08
Stout, Donald E.
Power plants
Reaction motor
Interrelated reaction motors
60 39093, 60 3908, F02K 302, F02G 300
Patent
active
047826584
ABSTRACT:
A geared turbofan gas turbine engine has a fan rotor carrying a plurality of fan blades driven by a gas generator via a gear assembly. A fan casing which has an exterior surface is positioned coaxially with and encloses the fan rotor.
A lubricant supply is provided to lubricate and cool the gear assembly and a heat exchanger is provided to cool the lubricant.
An air scoop forms a first duct which supplies air to the heat exchanger to cool the lubricant. A second duct defined partially by the air scoop downstream of the heat exchanger and an annular chamber formed coaxially supplies air warmed in the fan casing by the heat exchanger to the exterior surface of the fan casing for deicing or anti-icing purposes.
The air scoop and heat exchanger can be positioned on the fan casing, the gas generator casing or a pylon. A valve in the air scoop controls the flow of warmed air to the second duct.
REFERENCES:
patent: 1924122 (1933-08-01), Jones
patent: 2507044 (1950-05-01), Palmatier
patent: 2711453 (1955-06-01), Leigh, Jr.
patent: 2712727 (1955-07-01), Morley et al.
patent: 3834157 (1974-09-01), Hoffmann
patent: 3981466 (1976-09-01), Shah
patent: 4041695 (1977-08-01), Harper et al.
patent: 4182119 (1980-01-01), Hurley
Rolls-Royce plc
Stout Donald E.
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