Accession Number : ADD014071

Title :   Variable Nozzle Area Turbine Vane Cooling.

Descriptive Note : Patent, Filed 19 May 86, patented 17 Jan 89,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Hsia, Edward S ; Starkweather, John H ; Koffel, William K

Report Date : 17 Jan 1989

Pagination or Media Count : 13

Abstract : The cooling insert for a movable vane in a jet engine is divided into plural overlapping forward and aft segregated members, each member being coolant fed through separate vane trunnion areas and each insert is of successively decreasing cross-sectional area. Problems of locally inadequate vane cooling, coolant match point movement, and unequal coolant supply pressures are addressed by the disclosed apparatus. Reuse of the trunnion supplied impingement cooling air for additional cooling functions is also disclosed. Patents. (mjm)

Descriptors :   *COOLING, *JET ENGINES, *PATENTS, *JET VANES, AIR, COOLANTS, CROSS SECTIONS, FUNCTIONS, IMPINGEMENT, PRESSURE, SUPPLIES

Subject Categories : Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE