Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Reexamination Certificate
2005-04-22
2008-10-21
Look, Edward (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
Changing state mass within or fluid flow through working...
C416S09000A
Reexamination Certificate
active
07438527
ABSTRACT:
A turbine airfoil includes a span wise extending cavity formed from a ceramic mold and a slot extending from the cooling air cavity to a trailing edge being formed by a refractory metal core. The refractory metal core facilitates the reduction in the size of the slot and also in the reduction in the size of pedestals which pass transversely through the slot to interconnect the pressure side to the suction side of the airfoil. The blade has a cutback feature to expose a back surface on the inner side of the suction side wall with dimples being formed on the back surface so as to enhance heat transfer characteristics thereof. Provision is made for fabricating the dimples by way of a photo etching process.
REFERENCES:
patent: 4180373 (1979-12-01), Moore et al.
patent: 4601638 (1986-07-01), Hill et al.
patent: 6974308 (2005-12-01), Halfmann et al.
patent: 2005/0053459 (2005-03-01), Cunha et al.
Albert Jason E.
Cunha Frank J.
Look Edward
Marjama Muldoon Blasiak & Sullivan LLP
United Technologies Corporation
White Dwayne J
LandOfFree
Airfoil trailing edge cooling does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Airfoil trailing edge cooling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Airfoil trailing edge cooling will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4011933