Turbofan engine with a core driven supercharged bypass duct and

Details Turbofan engine with a core driven supercharged bypass duct and Turbofan engine with a core driven supercharged bypass duct and

1996-03-29

1998-09-15

Thorpe, Timothy

Power plants

Reaction motor

Air passage bypasses combustion chamber

602263, 602261, F02K 306, F02K 112

Patent

active

058063030

ABSTRACT:
A multiple bypass turbofan engine including a core engine assembly has a fan bypass duct radially outward of the core engine assembly and has first and second inlets disposed between forward and aft fans driven by a low pressure turbine and a core engine turbine respectively. An inlet duct having an annular duct wall is disposed radially inward of the bypass duct and connects the second inlet to the bypass duct and has disposed within a supercharger means for compressing air which is drivingly connected to the core turbine. The engine has an duct with an afterburner in an upstream portion and at a downstream end it has an exhaust nozzle with a fixed geometry throat. The nozzle may also have a fixed geometry exhaust nozzle outlet with or without a means for blowing at the throat.
One embodiment of the aft fan may have radially inner and outer rows of aft fan vane airfoils separated by a non-rotatable portion of the annular duct wall such that the outer row of aft fan vane airfoils are disposed in the inlet duct and the aft fan vane airfoils are independently variable. Radially inner and outer rows of aft fan rotor blade airfoils are separated by a rotatable portion of the annular duct wall such that the outer row of aft fan rotor blade airfoils are disposed in the inlet duct adjacent to and longitudinally aft of radially inner and outer rows of aft fan vane airfoils, respectively thus providing the supercharger means.

REFERENCES:
patent: 3091924 (1963-06-01), Wilder, Jr.
patent: 3224194 (1965-12-01), De Feo et al.
patent: 3296800 (1967-01-01), Keenan et al.
patent: 3314654 (1967-04-01), Thenault et al.
patent: 3409228 (1968-11-01), Mehr
patent: 3449914 (1969-06-01), Brown
patent: 3540682 (1970-11-01), Dibble
patent: 3688504 (1972-09-01), Hutchinson et al.
patent: 3792584 (1974-02-01), Klees
patent: 3806063 (1974-04-01), Fitzgerald
patent: 3841091 (1974-10-01), Sargisson et al.
patent: 3854286 (1974-12-01), Klees
patent: 3879941 (1975-04-01), Sargisson
patent: 3886737 (1975-06-01), Grieb
patent: 3915413 (1975-10-01), Sargisson
patent: 4010608 (1977-03-01), Simmons
patent: 4043121 (1977-08-01), Thomas et al.
patent: 4050242 (1977-09-01), Dusa
patent: 4055042 (1977-10-01), Colley
patent: 4064692 (1977-12-01), Johnson et al.
patent: 4068471 (1978-01-01), Simmons
patent: 4069661 (1978-01-01), Rundell et al.
patent: 4080785 (1978-03-01), Koff et al.
patent: 4086761 (1978-05-01), Schaut et al.
patent: 4169692 (1979-10-01), McDonough et al.
patent: 4175384 (1979-11-01), Wagenknecht et al.
patent: 4222235 (1980-09-01), Adamson et al.
patent: 4285194 (1981-08-01), Nash
patent: 4409788 (1983-10-01), Nash et al.
patent: 4446696 (1984-05-01), Sagisson et al.
patent: 4707981 (1987-11-01), Wagner
patent: 4791783 (1988-12-01), Johnson
patent: 4958489 (1990-09-01), Simmons
patent: 5048286 (1991-09-01), Stransky et al.
patent: 5056307 (1991-10-01), Liang
patent: 5113649 (1992-05-01), Siedlecki, Jr.
patent: 5155993 (1992-10-01), Baughman et al.
patent: 5205119 (1993-04-01), Bulman
patent: 5261227 (1993-11-01), Giffin, III
patent: 5274999 (1994-01-01), Rohra et al.
patent: 5305599 (1994-04-01), Marvin
patent: 5327716 (1994-07-01), Giffin, III et al.
patent: 5327721 (1994-07-01), Bulman
patent: 5343697 (1994-09-01), Johnson et al.
patent: 5404713 (1995-04-01), Johnson
patent: 5406787 (1995-04-01), Terrier
"5.5 Mass-Flow Ratio or Area Ratio", Jet Propulsion For Aerospace Applications, Second Edition, Pitman Publishing Corp., by Walter J. Hesse & Nicholas V. S. Mumford, Jr., pp. 111-114.
"Affordable Nozzles Employing the Fixed Aperture Design Approach", American Institute of Aeronautics and Astronautics, Inc., 1993, pp. 1-8 plus Figures 1-19.

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