Accession Number : ADA325259

Title :   Spacecraft Interactions Modeling and Post-Mission Data Analysis.

Descriptive Note : Final rept. 15 Jul 93-15 Jul 96,

Corporate Author : RADEX INC BEDFORD MA

Personal Author(s) : Bonito, N. A. ; Bounar, K. H. ; McNeil, W. J. ; Roth, C. J. ; Tautz, M. F.

PDF Url : ADA325259

Report Date : 15 AUG 1996

Pagination or Media Count : 72

Abstract : Software systems were designed and developed for data management, data acquisition, interactive visualization and analysis of solar arrays, tethered objects, and large object space plasma interactions. Simulations were performed and models were constructed for spacecraft interactions with the ambient environment. In Support of these analyses, models for satellite ephemeris, attitude determination, magnetic fields, atmospheric composition, and particle precipitation were designed and developed, using PL computational resources extensively. The SPREE experiments were two electrostatic analyzers and the SPREE Particle Correlator Experiment (SPACE) which were part of the Tethered Satellite System (TSS-1) on the STS46 Shuttle mission. During the TSS-1 Mission, SPREE was used to study the effects of a potential being induced between the tethered satellite and the Shuffle by the motion of the conductive tether across Earth's magnetic field lines. These effects included investigations of return currents and wave-particle interactions. Subsequently, revisions and pre-mission testing was completed to support the TSS-lR experiment on STS-75. Calibration of the interaction of ion beams with the ambient plasma were studied for shuttle missions STS-6O and STS69. The MUMBO vacuum chamber measurements using the CALSYS system were analyzed. Methods and routines were developed to build calibration files which depict the average aperture response as a function of the polar and azimuth angles with respect to the aperture normal. The CHAWS experiment data was plotted and analyzed using the CHAPS, CHOMPS and CHUNKS programs.

Descriptors :   *COMPUTER PROGRAMS, *SPACECRAFT, *ELECTRONS, TEST AND EVALUATION, FILES(RECORDS), GEOMAGNETISM, MEASUREMENT, MAGNETIC FIELDS, COMPUTATIONS, ENVIRONMENTS, DATA MANAGEMENT, INTERACTIONS, PLASMAS(PHYSICS), ION BEAMS, VACUUM CHAMBERS, PRECIPITATION, PARTICLES, MISSIONS, ARTIFICIAL SATELLITES, CONCENTRATION(COMPOSITION), DATA ACQUISITION, RESOURCES, CALIBRATION, MILITARY PUBLICATIONS, AZIMUTH, WAVES, ATMOSPHERIC CHEMISTRY, CORRELATORS, TETHERING, SOLAR PANELS, ELECTROSTATIC ANALYZERS, PLANETARY SATELLITES.

Subject Categories : Computer Programming and Software
      Unmanned Spacecraft
      Manned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE