Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1978-12-22
1981-01-27
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
416213R, 416241R, 415172A, F01D 518
Patent
active
042472547
ABSTRACT:
A turbomachinery blade including a hollow interior is provided with an improved tip cap comprising first and second members each made of an alloy of a composition and properties different from the other. The first member, in the form of a closure plate bonded to sidewalls of the hollow body, is of a nickel-base or cobalt-base superalloy casting characterized by high mechanical strength properties at elevated temperatures. The second member is a rib of the shape of and bonded to the first member and is of a cast alloy characterized by the combination of resistance to oxidation, sulfidation and thermal fatigue at elevated temperatures. The second member provides an outer tip extension of the blade.
REFERENCES:
patent: 3389889 (1968-06-01), Penny
patent: 3615375 (1971-10-01), Beltran
patent: 3700427 (1972-10-01), Hoppin et al.
patent: 3759692 (1973-09-01), Zelahy
patent: 3854842 (1974-12-01), Caudill
patent: 3899267 (1975-08-01), Dennis et al.
patent: 3982851 (1976-09-01), Andersen et al.
General Electric Company
Lawrence Derek P.
Powell Jr. Everette A.
Sachs Lee H.
Trausch, III A. N.
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