Accession Number : AD0697769

Title :   MEASUREMENT OF ENTHALPY DISTRIBUTION AT THE EXIT OF A 5-MW ARC HEATER AS OBTAINED BY AN ABLATION TECHNIQUE.

Descriptive Note : Final rept. Nov 67-Mar 69,

Corporate Author : ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AIR FORCE STATION TENN

Personal Author(s) : Baker,W. B. , Jr. ; High,M. D.

Report Date : NOV 1969

Pagination or Media Count : 35

Abstract : The enthalpy profile was measured at the exit of a 5-MW arc heater with a Mach number 3.82 nozzle operating at a total pressure of 10 atm and total enthalpy of 2700 Btu/lb. The enthalpy distribution was obtained by means of a technique which relates the enthalpy to the ablation rate of a material of known characteristics. The technique is limited only by the manner in which the impact pressure at the ablating surface is measured and having a material of known ablation characteristics. Large gradients in the enthalpy distribution were eliminated by installing a stilling chamber between the arc heater and exit nozzle. (Author)

Descriptors :   (*ARC HEATERS, *ENTHALPY), (*ABLATION, TEST FACILITIES), TEST METHODS, DISTRIBUTION, IMPACT, PRESSURE, MATERIALS, NOZZLE GAS FLOW, SIMULATION, HEAT RESISTANT GLASS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE