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008210104e198202  onca    obt  f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
0861 |aCo24-3/7-1354-1982E-PDF
1001 |aVigneron, F. R., |eauthor.
24514|aThe attitude dynamics of Hermes after termination of three-axis stabilization / |cby F.R. Vigneron and W.E. Krag.
264 1|aOttawa : |bCommunications Research Centre, |cFebruary 1982.
300 |a1 online resource (iii, 25 pages) : |billustrations.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aCRC report ; |vno. 1354
500 |a"Space Technology and Applications Branch."
500 |aDigitized edition from print [produced by Innovation, Science and Economic Development Canada].
500 |aSome pages rotated in this copy.
504 |aIncludes bibliographical references (page 15).
5203 |a"In late 1979, Hermes, an experimental geostationary communications satellite, experienced an earth sensor malfunction which resulted in its loss of control and subsequent transition from 3-axis stabilization to spin about its maximum-moment-of-inertia axis. During and after the transition, the sun's reflections from the satellite were detected and monitored at the experimental test site (ETS) for the Ground Based Electro Optical Deep Space Surveillance System (GEODSS) in New Mexico. In this report, the satellite's attitude dynamics are deduced by correlating the GEODSS ETS observations with dynamics analysis and simulation. The transition to spin took about 15 days. Thereafter, the rate of spin decayed to zero in about 70 days due to solar pressure. The GEODSS ETS observations also provide data on the relative misalignment and bending of the two solar sails of the satellite"--Abstract, page 1.
530 |aIssued also in print format.
650 0|aHermes (Communications satellite)
650 0|aArtificial satellites|xAttitude control systems.
650 0|aArtificial satellites|xStability.
650 6|aHermes (Satellite de télécommunications)
650 6|aSatellites artificiels|xSystèmes de commande d'orientation.
650 6|aSatellites artificiels|xStabilité.
7102 |aCommunications Research Centre (Canada), |eissuing body.
830#0|aCRC report ;|vno. 1354.|w(CaOODSP)9.882492
85640|qPDF|s1.48 MB|uhttps://publications.gc.ca/collections/collection_2021/isde-ised/co24/Co24-3-7-1354-1982-eng.pdf