Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1999-07-26
2000-12-26
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...
415115, F01D 508
Patent
active
061649139
ABSTRACT:
A turbine airfoil includes first and second sidewalls joined together at leading and trailing edges, and extending longitudinally from root to tip. An internal cooling circuit is disposed between the sidewalls for channeling a coolant therein. A column of longitudinally spaced apart ejection slots extend through the first sidewall along the trailing edge, and are disposed in flow communication with the cooling circuit for discharging the coolant toward the trailing edge. Some of the slots are disposed between a pitchline and the tip and are inclined at different ejection angles longitudinally outwardly from the pitchline. And, some of the slots are disposed between the pitchline and root and extend at least parallel with the pitchline without longitudinally inward inclination.
REFERENCES:
patent: 4820122 (1989-04-01), Hall et al.
patent: 5176499 (1993-01-01), Damlis et al.
patent: 5378108 (1995-01-01), Zelesky
patent: 5503529 (1996-04-01), Anselmi et al.
GE Aircraft Engines, CF34-3B turbine blade drawing excerpt, in commercial production and use in this country for more than one year.
General Electric Company
Hess Andrew C.
Look Edward K.
Woo Richard
Young Rodney M.
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