Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...
Patent
1974-10-23
1977-05-10
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...
416231R, F01D 518
Patent
active
040225429
ABSTRACT:
An improved transpiration cooled turbine blade has a porous wall for the passage of coolant fluid therethrough; the wall comprising an outer porous layer, a second layer with relatively large holes, and a third layer with metering holes for the cooling fluid. There is provision for the direct passage of coolant to the edges of the blade, which edges are single layered. Slots near the trailing edge of the blade direct a portion of the cooling fluid outwardly at a right angle to the blade's concave surface to reduce drag losses due to flow separation under conditions of high blade loading.
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Powell Jr. Everette A.
Teledyne Industries Inc.
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