Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2005-05-10
2005-05-10
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C416S09600A, C415S001000, C415S115000
Reexamination Certificate
active
06890153
ABSTRACT:
A turbine airfoil includes pressure and suction sidewalls joined together at opposite leading and trailing edges, and at a forward bridge spaced behind the leading edge to define a flow channel. The bridge includes a row of impingement holes. The flow channel includes a row of fins behind the leading edge, a row of first turbulators behind the pressure sidewall, and row of second turbulators behind the suction sidewall. The fins and turbulators have different configurations for increasing internal surface area and heat transfer for back side cooling the leading edge by the cooling air.
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Taslim et al, “An Experimental Study of Impingement on Roughened Airfoil Leading-Walls with Film Holes”, Oct. 2001, Journal of Turbomachinery, vol. 123,No. 4, pp. 766-773.
Taslim et al, “An Experimental Evaluation of Advanced Leading Edge Impingement Cooling Concepts,” Journal of Turbomachinery, 2001, vol. 123, No. 2, pp. 147-153.
Demers Daniel Edward
Taslim Mohammad Esmaail
Andes William S.
Conte Francis L.
General Electric Company
McAleenan J. M.
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