Accession Number : ADA295230

Title :   Modeling and Post Mission Data Analysis.

Corporate Author : S-CUBED LA JOLLA CA

Personal Author(s) : Davis, V. A. ; Mandell, M. J.

PDF Url : ADA295230

Report Date : 08 JUN 1994

Pagination or Media Count : 115

Abstract : This report described work performed during the first year of a contract to do analysis in support of three Phillips Laboratory flight experiments. The PASP Plus effort is an examination of the interactions of the PASP Plus spacecraft and test solar cells with the low-energy plasma environment. This report describes calculations done to assist in determinations of the PASP Plus floating potential. The SPREE effort is the use of comparisons with flight data to examine, improve, and validate sheath and electron collection models and to examine some of the interactions that determine the spectrum of the incident ions. This report describes research on ionization of shuttle thruster effluent by an electron beam. The CHAWS effort is the development and validation of models of the spacecraft wake, including the currents to the various detectors of the CHAWS wakeside sensor on the Wake Shield Facility. This report describes two and three dimensional calculations of the wake environment and current collected by the CHAWS wakeside detectors for a range of flight conditions. A screen dipole model that reproduces some of the qualitative features of the three-dimensional calculations is also described.

Descriptors :   *SOLAR CELLS, *SPACE SHUTTLES, FLIGHT TESTING, IONOSPHERE, IONS, LABORATORY TESTS, SPACECRAFT, COMPUTATIONS, ENVIRONMENTS, DETECTORS, VALIDATION, MODELS, MISSION PROFILES, TWO DIMENSIONAL, FACILITIES, THREE DIMENSIONAL, ELECTRONS, ELECTRON BEAMS, FLIGHT, WAKE, IONIZATION, SHIELDING, RANGE(EXTREMES), EFFLUENTS, COLLECTION, THRUSTERS.

Subject Categories : Electric Power Production and Distribution
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE