Research/Patents/US 5700131
US 5700131

COOLED BLADES FOR A GAS TURBINE ENGINE

Assignee

UNITED TECHNOLOGIES CORPORATION, A CORP. OF DE

Filed

Aug 24, 1988

Granted

Dec 23, 1997

Location

JUPITER FL US

Abstract

An internally cooled turbine blade for a gas turbine engine is modified at the leading and trailing edges to include a dynamic cool air flowing radial passageway with an inlet at the root and a discharge at the tip feeding a plurality of radially spaced film cooling holes in the airfoil surface. Replenishment holes communicating with the serpentine passages radially spaced in the inner wall of the radial passage replenish the cooling air lost to the film cooling holes. The discharge orifice is sized to match the backflow margin to achieve a constant film hole coverage throughout the radial length. Trip strips may be employed to augment the pressure drop distribution

Source: Google Patents

35 USC §181 Secrecy Order

Imposed

Mar 30, 1989

Rescinded

Mar 18, 1997

Duration

7 years, 11 months

Inventor

  • 1KENNETH B. HALL

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