Accession Number : AD0475511


Title :   CONVECTIVE HEAT FLUX TRANSDUCER DEVELOPMENT.


Descriptive Note : Final rept. Apr 64-Apr 65,


Corporate Author : BOEING AEROSPACE CO SEATTLE WA


Personal Author(s) : Wilhelm, James K


Report Date : Oct 1965


Pagination or Media Count : 110


Abstract : This report describes a development program undertaken to complete work begun during the X-20A contract on a surface heat flux transducer. It was to operate with a convective input up to 50 BTU/ft.2-sec at temperatures up to 3000 F. The concept of the sensor was to generate a temperature difference by using two surfaces which exhibit different emittances and controlling this temperature difference by designing a proper conductive path between the surfaces. Previous analyses indicated that this temperature difference was a function of the input heat flux. A new study revealed the truth of the situation in that the sensor was actually operating as a thermal equilibrium device. One more test was run to verify these conclusions in order that sensor capabilities could be detailed. (Author)


Descriptors :   *HEAT RESISTANT MATERIALS , HEAT FLUX , TRANSDUCERS , HIGH TEMPERATURE , TEMPERATURE SENSITIVE ELEMENTS , THERMOCOUPLES , SEALING COMPOUNDS , ELECTRON BEAMS , SIMULATION , GAS DISCHARGES , BOUNDARY LAYER , ELECTRICAL CONDUCTIVITY , THERMAL CONDUCTIVITY , REENTRY VEHICLES , WIRE , METAL COATINGS , PLASMAS(PHYSICS) , ALUMINUM COMPOUNDS , OXIDES , BERYLLIUM COMPOUNDS , MOLYBDENUM ALLOYS , ZIRCONIUM ALLOYS , TITANIUM ALLOYS , HEAT TRANSFER , CARBIDES


Subject Categories : Metallurgy and Metallography


Distribution Statement : APPROVED FOR PUBLIC RELEASE