Accession Number : AD0468477


Title :   THE DEVELOPMENT OF AN INSULATED THERMIONIC CONVERTER-HEAT PIPE ASSEMBLY.


Descriptive Note : Quarterly technical rept. no. 1, Jan-Mar 65,


Corporate Author : RADIO CORP OF AMERICA LANCASTER PA ELECTRONIC COMPONENTS AND DEVICES


Personal Author(s) : Harbaugh, W E


Report Date : 30 Jun 1965


Pagination or Media Count : 41


Abstract : This report covers the effort applied during the first three months on the subject contract toward the development of a long life insulated thermionic converter integrated with an efficient, constant temperature heat transfer device. Specifically, the cylindrical converter will be adapted for heating by means of a heat pipe to operating temperatures of 1500 C. The module available from prior work was life tested for more than 1000 hours. Irreparable damage was caused by equipment failure and the test halted. Progress was made in the development of high temperature, ceramic-metal seals. A program has been detailed for the production of ultra pure cesium and the accurate analysis of the result. New approaches toward lowering the collector work function are being investigated. The promising results of adding xenon to the operating converter is being further investigated to optimize performance. The heat-pipe test vehicle has been designed for the evaluation of processing techniques. The process of insulating the emitter from the heat pipe at high temperatures is proceeding on schedule. The converter design has been modified to facilitate the use of a heat pipe as the prime source of heat. (Author)


Descriptors :   *THERMIONIC CONVERTERS , PERFORMANCE(ENGINEERING) , METAL SEALS , CERAMIC MATERIALS , CESIUM , XENON , HEAT , PIPES , LIFE EXPECTANCY(SERVICE LIFE) , HEAT TRANSFER , MANUFACTURING


Distribution Statement : APPROVED FOR PUBLIC RELEASE