Research/Patents/US 5688104
US 5688104

AIRFOIL HAVING EXPANDED WALL PORTIONS TO ACCOMMODATE FILM COOLING HOLES

Assignee

UNITED TECHNOLOGIES CORPORATION

Filed

Nov 24, 1993

Granted

Nov 18, 1997

Location

COVENTRY CT US

Abstract

An internally cooled airfoil includes film cooling holes extending through an expanded section of the wall. Various construction details are developed which provide long film cooling holes resulting in convective cooling and film cooling of the outer surface of the airfoil downstream of the cooling hole. In a particular embodiment, the airfoil includes a wall having an expanded section and a canted shaped cooling hole. The shaped cooling hole includes a metering section having a length L2 and a diffusing section having a length L3. The expanded section has a thickness Te, measured along the direction of the cooling hole, sufficient to accommodate the total length L1 of the cooling hole.

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Sep 21, 1994

Rescinded

Apr 9, 1997

Duration

2 years, 6 months

Inventor

  • 1BRIAN K. BEABOUT

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Back to patent indexSource: USPTO 35 USC §181 secrecy order records