Film cooling of jet engine components

Power plants – Combustion products used as motive fluid – Combustion products generator

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60757, 416 95, F02C 100, B63H 114

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active

056531109

ABSTRACT:
A jet engine component, such as an aircraft gas turbine engine rotor blade or a scramjet engine fuel injector. The component has a wall portion including a first surface exposable to a cooler, higher static pressure fluid and a second surface exposable to a hotter, lower static pressure gas flow flowing across the second surface. The component further includes a generally straight film coolant passageway having an inlet on the first surface and an outlet on the second surface. The second surface has a seamless groove which is open substantially entirely along its longitudinal dimension extending from the outlet along the lower static pressure gas flow for improved film cooling of the second surface.

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M.C. Gillcrist and L.W. Reidy, AIAA/ASME/SAE/ASEE, 25th Joint Propulsion Conference, Monterey, CA, Jul. 10-12, 1989, "Drag Measurements on Marine Vehicles With a Riblet Surface Coating".
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