Accession Number : AD0807003

Title :   TRANSIENT TEMPERATURE AND THERMAL CURVATURE BEHAVIOR OF SOUNDER ANTENNAS ON ALOUETTE SATELLITES,

Corporate Author : DEFENCE RESEARCH TELECOMMUNICATIONS ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s) : Vigneron, F. R.

Report Date : NOV 1966

Pagination or Media Count : 13

Abstract : Structural members of the STEM type are presently used as antennas for ionospheric sounding satellites such as Alouette 1 and 2, Explorer 20, and the proposed ISIS series. Since these satellites are spin-stabilized, the STEM antennas experience variations in temperature and consequent variations in thermal curvature, and in average temperature as a result of their changing aspect with respect to the sun. In this report the average temperature and thermal curvature variation of STEMS on spin-stabilized satellites are investigated. The results are used to analyze existing designs of the Alouette class of satellites. (Author)

Descriptors :   *THERMAL PROPERTIES), (*SATELLITE ANTENNAS, (*DIPOLE ANTENNAS, SATELLITE ANTENNAS), SOLAR RADIATION, EXTENDABLE STRUCTURES, SPIN STABILIZATION, CANADA, SCIENTIFIC SATELLITES, ATMOSPHERIC SOUNDING, IONOSPHERE, THERMAL STABILITY, EQUATIONS.

Subject Categories : Electrical and Electronic Equipment
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE