Exploratory Investigation of Transpiration Cooling of a 40° Double Wedge Using Nitrogen and Helium as Coolants at Stagnation Temperatures of 1,295° to 2,910° F
Bernard Rashis
Jan 1957 · NACA
Ebook
18
Pages
About this ebook
Abstract: The results presented herein were obtained in a transpiration cooling investigation of a double wedge of 40° included angle having a porous stainless-steel specimen inserted flush with the top surface of the wedge. Nitrogen and helium were used as coolants, and tests were conducted for stagnation temperatures ranging from 1,295° to 2,910° F. The data for both the nitrogen and helium coolants indicated greater cooling effectiveness than predicted by theory and were in good agreement with the results for an 8° cone tested at a stagnation temperature of 600° F.
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