Accession Number : ADD012405

Title :   Turbine Air Seal with Full Backside Cooling.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Liang,George

Report Date : 12 May 1986

Pagination or Media Count : 21

Abstract : This patent application relates to air seals for use in turbo-machinery and, more particularly relates to an air seal assembly with increased cooling that is adapted to withstand elevated engine operating temperatures. The air seal comprises a full 360 degree seal ring that assemblies to the turbine by means of interlocking flanges. A two piece impingement plate which is positioned adjacent to the air seal controls and meters cooling air flow that cools ceramic seal. The backside of air seal is thereby fully cooled before heated cooling air is exhausted from the seal through holes at expansion slots and edge holes at the axial edges of the air seal.

Descriptors :   *PATENT APPLICATIONS, *COOLING, *SEALS(STOPPERS), AIR, ASSEMBLY, AXES, CERAMIC MATERIALS, CONTROL, EDGES, ENGINES, EXPANSION, FLANGES, HEAT, HOLES(OPENINGS), MEASURING INSTRUMENTS, SLOTS, TURBINES, AIR COOLED, GAS SEALS, RINGS

Subject Categories : Adhesives, Seals and Binders

Distribution Statement : APPROVED FOR PUBLIC RELEASE