Interturbine duct

Details Interturbine duct Interturbine duct

1988-08-29

1991-05-21

Casaregola, Louis J.

Power plants

Reaction motor

Including motive fluid treating means

60 39161, F02K 304

Patent

active

050164368

ABSTRACT:
An interturbine duct for interconnecting a gas turbine engine with a power turbine. The interturbine duct is of generally frusto-conical form and double skinned so that an annular cross-section volume is defined between the skins. Cooling air introduced in a generally tangential direction at the larger diameter extent of the duct follows a generally spiral path to the smaller diameter extent where it is exhausted into the efflux of the gas turbine engine. The spiral path of the cooling air ensures good heat transfer coefficients over both of the skins and obviates the need for baffles to direct the cooling air flow.

REFERENCES:
patent: 2312995 (1943-03-01), Anxionnaz et al.
patent: 3255586 (1966-06-01), Hennig et al.
patent: 3408044 (1968-10-01), Burger
patent: 3469787 (1969-09-01), Marsh et al.
patent: 4187054 (1980-02-01), Landis, Jr. et al.
patent: 4627233 (1986-12-01), Baran, Jr.

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