Accession Number:

AD0276867

Title:

DIELECTRICS FOR SATELLITES AND SPACE VEHICLES

Descriptive Note:

Final rept., 1 Mar 1959 - 28 Feb 1962

Corporate Author:

JOHNS HOPKINS UNIV BALTIMORE MD DIELECTRICS LAB

Personal Author(s):

Report Date:

1962-03-30

Pagination or Media Count:

155.0

Abstract:

Results of a study of the effects of simulated space environment on the electrical properties of solid insulating materials are reported. Equipment and techniques are described for the measurement of loss properties, flashover strength and electric strength during x-ray and UV irradiation at pressures in the 10 to the -6th power Torr range. Twenty-one organic and inorganic materials are included. High-vacuum sparkover uniform field and flashover measurements at d-c and 60 cps show that electrode surface roughness is the controlling factor that the dielectric properties of the material do not influence flashover voltage and that x-ray and UV radiation have no effect on flashover voltage. Electric strengths of low-loss polymers are not effected by x-ray irradiation in high-vacuum. X-ray induced a-c losses are exhibited by several materials during and after irradiation. X-ray induced d-c polarization, absorption and conduction currents are exhibited by most materials.

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE