Hybrid gas turbine rotor

Details Hybrid gas turbine rotor Hybrid gas turbine rotor

1984-05-02

1987-01-27

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

416244A, 415212R, F01D 534

Patent

active

046391940

ABSTRACT:
A hybrid gas turbine rotor having a silicon carbide ceramic turbine wheel portion and a nickel alloy steel shaft portion further includes a hollow silicon carbide ceramic stub shaft integral with the turbine wheel portion having a frustoconical outer surface tapering away from the wheel portion and a tubular end on the shaft portion having an inner frustoconical surface tapering toward the shaft portion at an angle corresponding to the outer surface taper angle. The shaft portion is connected to the wheel portion by shrink fitting the tubular end over the stub shaft so that the shrink fit is the sole medium whereby the wheel portion is supported on the shaft portion and torque is transferred therebetween.

REFERENCES:
patent: 788830 (1905-05-01), Hodgkinson
patent: 1669797 (1928-05-01), Wiberg
patent: 2297508 (1942-09-01), Schutte
patent: 2308307 (1943-01-01), Robinson
patent: 2433589 (1947-12-01), Adams
patent: 2515303 (1950-07-01), Isnard
patent: 2662725 (1953-12-01), McVeigh
patent: 3019039 (1962-01-01), Clavell
patent: 3666302 (1972-05-01), Kellett
patent: 3943703 (1976-03-01), Kronogard
patent: 4063850 (1977-12-01), Hueber et al.
patent: 4123199 (1978-10-01), Shimizu et al.
patent: 4272954 (1981-06-01), Kronogard
patent: 4408959 (1983-10-01), Long et al.
patent: 4424003 (1984-01-01), Brobeck

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