Accession Number:

AD0425736

Title:

RESEARCH STUDIES ON THERMIONIC CONVERTERS, EMITTER SHELL PHASE.

Descriptive Note:

Quarterly technical rept. no. 1, 1 July30 Sep 63,

Corporate Author:

RADIO CORP OF AMERICA LANCASTER PA

Personal Author(s):

Report Date:

1963-10-01

Pagination or Media Count:

39.0

Abstract:

As a result of the materials investigation completed to date, three types of shell materials were selected for evaluation alumina, beryllia, and pyrolytic silicon carbide. The permeation test assembly, which is basically a 10-in. long, closed-end tube, was designed, and parts for six assemblies were ordered. Four are high alumina ceramics, ranging in purity from 98 to 99.9 one is a beryllia body with a purity of 99.5 and the last is a pyrolytic silicon carbide. The mass spectrometer and collection chamber methods of conducting permeation studies were reviewed and the latter was selected on the basis of its greater sensitivity. Equipment was designed, constructed, and successfully tested. Conceptual design considerations indicate that the converter may be cylindrical, and a fossil fuel burner to accomodate this shape was designed and evaluated. In burner tests with a cylindrical shape, the difference between the temperatures at the top and bottom of the test piece was 10-20 C. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE