Accession Number : ADD002770

Title :   Compact Transpiration Cooling System.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Allen,Redfield W ; Weckesser,Louis B

Report Date : 07 May 1974

Pagination or Media Count : 7

Abstract : The patent relates to a transpiration cooling system for dissipating heat loads in sharp edges of flight vehicle structures moving at hypersonic velocities and sharp leading edges of gas turbine blades operation in high temperature environments. The invention comprises a compact plenum formed by a longitudinal coolant passage having a longitudinal porous segment in its wall, the compact plenum passage fitting within the leading edge structure and extending along the leading edge in a direction transverse to the external hot gas flow. Pressurized gaseous coolant, supplied by a remote reservoir or engine compressor thus flows within the compact plenum inside the leading edge structure and also transpires in a forward direction from the compact plenum through the porous segment and into the critically heated forward stagnation line region of the sharp leading edge structure.

Descriptors :   *Hypersonic vehicles, *Gas turbine blades, *Cooling, *Transpiration, *Patents, Plenum chambers, Gas flow

Subject Categories : Aircraft
      Jet and Gas Turbine Engines

Distribution Statement : APPROVED FOR PUBLIC RELEASE