Turbine wheel for hot gas turbine engine

Details Turbine wheel for hot gas turbine engine Turbine wheel for hot gas turbine engine

1980-12-29

1986-04-08

Hornsby, Harvey C.

Rotary kinetic fluid motors or pumps

With diversely oriented inlet or additional inlet for...

415175, 415214, 416 95, 416195, 416189, 416218, 416241B, F01D 508

Patent

active

045809437

ABSTRACT:
A turbine wheel for a hot gas turbine engine operable at relatively high peratures, e.g. above 2,000.degree. F., and high velocities, e.g. above 30,000 r.p.m. The blades are formed of temperature-resistant ceramic material. A special annular band of high tensile strength material is affixed to tip areas of the blades for translating centrifugal forces into compressive loadings on the blades. To compensate for differential thermal expansion of the band relative to the blades a localized cooling system is provided for selectively cooling the annular band without cooling the blades.

REFERENCES:
patent: 1678065 (1928-07-01), Lamb
patent: 1776832 (1930-09-01), Holzwrath
patent: 1829674 (1931-10-01), Rosenlocher
patent: 1947462 (1934-02-01), Doorbar
patent: 2769611 (1956-11-01), Schwarzkopf
patent: 3088192 (1963-05-01), Turner
patent: 3597102 (1971-08-01), Unsworth et al.
patent: 3677660 (1972-07-01), Taniguchi et al.
patent: 3857650 (1974-12-01), Cerrato
patent: 4111603 (1978-09-01), Stahl
"Thermodynamics" 2 ed, J. P. Holman, p. 555 Steamtables.

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