Internally cooled hollow airfoil

Details Internally cooled hollow airfoil Internally cooled hollow airfoil

1983-01-31

1985-09-24

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft structure

416 97A, 416 90R, B64C 336

Patent

active

045428670

ABSTRACT:
In a hollow airfoil, thin metal baffle sheets are bonded to opposing suction and pressure sides of a longitudinally extending cooling air cavity. The longitudinally extending downstream edges of these opposing baffle sheets are closely spaced apart defining a cooling air outlet slot for the cavity which may, for example, feed cooling air to the trailing edge portion of the airfoil. If the rearward edges of either baffle sheet become unbonded from the inside cavity wall the edge of the baffle sheet might bend inwardly and close the outlet slot. To prevent this possibility a plurality of pedestals extend outwardly from each side of the cavity wall opposite the rearward edge of each baffle sheet and extending substantially to the inwardly facing surface of that baffle sheet trapping it against the wall.

REFERENCES:
patent: 2879028 (1959-03-01), Stalker
patent: 2923525 (1960-02-01), Creek
patent: 3628880 (1971-12-01), Smuland
patent: 4025226 (1977-05-01), Hovan
patent: 4135855 (1979-01-01), Peill

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