Turbine

Details Turbine Turbine

1987-05-14

1989-05-02

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Plural impellers having relative movement or independent...

Coaxial rotation

416171, 416193R, 416190, 416198A, 415134, 415 77, 415 91, F01D 530

Patent

active

048264032

ABSTRACT:
A power turbine (12) comprises alternate annular arrays of contra-rotatable turbine blades. Two arrays of turbine blades (30) and (47) have annular arrays of aerofoil propulsion blades (17,18) respectively attached thereto. Alternate arrays of turbine blades are attached to a primary drum member (55) in such a manner that below normal operating temperatures, limited relative radial movement is permitted between them. However when the normal operating temperature is reached, the relative radial movement is inhibited in such a manner that the rigidity of the power turbine (12) enhanced.

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patent: 3811791 (1974-05-01), Cotton
patent: 4621978 (1986-11-01), Stuart
patent: 4767271 (1988-08-01), Catlow

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