Accession Number:

AD0609966

Title:

THE DEVELOPMENT OF A LOW-TEMPERATURE CYLINDRICAL THERMIONIC GENERATOR.

Descriptive Note:

Quarterly technical rept. no. 3.

Corporate Author:

RADIO CORP OF AMERICA LANCASTER PA

Personal Author(s):

Report Date:

1964-12-01

Pagination or Media Count:

50.0

Abstract:

The evaluation and analysis of Type A-1198B insulated converters provided additional evidence that the A-1198B is a reliable, long-life design, and that the cast alumina layer is an effective insulator. Four improved Type A-1274A Modules, Serial Numbers 2 through 5, were fabricated. The improved reliability of the module was demonstrated in calibration tests of Module Serial No. 4, when more than 240 hours of operating time was accumulated over a wide range of operating conditions. Tests showed that although the A-1274A is capable of full design performance, additional collector cooling is required. Consequently, the radiation heat rejection system for Module Serial No. 5 was redesigned. Tests with the gas dosing injection system indicated the need for more accurate gas injection, and the system was subsequently modified. Collectors of cesium fluoride, cesium sulphate, tungsten trioxide, iridium matrix, and palladium matrix were tested in Type A-1194E converters in the low-work function collector investigation. Results were unsatisfactory. Data were compiled and analyzed on both molybdenum and niobium high-temperature collectors. The results showed that collectors can be operated as high as 700 C with an emitter temperature of 1350C without inordinate loss of power.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE