Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1992-11-30
1995-04-04
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
F01D 518
Patent
active
054031591
ABSTRACT:
A coolable airfoil 10 has a plurality of spanwisely extending passages. Various construction details are developed to increase the cooling effectiveness of the internal structure and decrease the need for cooling air. In one particular embodiment, a leading edge passage 56 has film cooling air flowing over the passage to shelter the passage from the hot working medium gases. This sheltered cooling air is then mixed with heated cooling air from a tortuous passage 84, 92 flowing through the mid-chord region 68 of the blade. In one embodiment, the coating air is supplied to a chordwisely extending tip passage 74 to cool the airfoil tip region and is mixed in the passage 74.
REFERENCES:
patent: 3542486 (1970-11-01), Kercher et al.
patent: 4278400 (1981-07-01), Yamarik et al.
patent: 4474532 (1984-10-01), Pazder
patent: 4501053 (1985-02-01), Craig et al.
patent: 4753575 (1988-06-01), Levengood et al.
First Stage Turbine Blade Core for V-2500-A1 engine manufactured by International Aero Engines, in commercial use more than 1 year prior to filing.
Green Dennis J.
Yamarik George J.
Fleischhauer Gene D.
Look Edward K.
United Technoligies Corporation
Verdier Christopher
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