Multi-Slot Film Cooling of Supersonic Aircraft Using Air as a Coolant.
Final technical rept. 4 Jun 73-3 May 74,
ADVANCED TECHNOLOGY LABS INC WESTBURY N Y
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The study evaluates multi-slot film cooling using air as an active coolant for thermal protection of aircraft surfaces under conditions of steady-state cruise operation at supersonic speeds and low to moderate altitudes. In-flight refrigeration of captured atmospheric air using a turbocooler, as described, is assumed to be the only practical means of providing the required continuous supply of cold air. Therefore the properties of the coolant have been described in terms of the vehicle flight conditions and the efficiency of a turbocooler. A computer program has been developed based on the described analysis which determines the slot locations necessary to protect a surface to a specified maximum adiabatic wall temperature at a given set of primary flow conditions.
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