FEASIBILITY DEMONSTRATION OF A TRANSPIRATION COOLED NOZZLE SYSTEM.
Interim rept. no. 1, 15 June-14 Sep 63.
TAPCO DIV THOMPSON RAMO WOOLDRIDGE INC CLEVELAND OHIO
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Presented are the first phase theoretical analy ses and bench tests leading to fabrication and test of a nozzle system employing transpiration cooling in the throat region. Processing tech nology studies are made for porosity control and stability of sintered tungsten to be utilized as the throat insert porous media. Joining in vestigations were made to determine the compati bility of porous tungsten to tantalum welds by both tungsten-inert-gas and electron beam equip ment and brazing studies initiated. Heat trans fer relations for transpiration cooling were de veloped and programmed for IBM 7070 solution. Thermal stress relations incorporating yielding of the inner surface were develoed and sample calculations made. A study of various coolants was made for specific application to transpira tion cooling. Author