00000nam 2200000zi 4500 9.884948 CaOODSP 20221107171013 m o d f cr cn||||||||| 200221s1975 onca ob f000 0 eng d CaOODSP eng rda CaOODSP Co24-446/1975E-PDF Hughes, P. C. (Peter Carlisle), 1940- author. Pseudo-rate control of very flexible communications satellites / by P.C. Hughes, T.M. Abdel-Ramen. [Ottawa] : [Department of Communications], 1975. 1 online resource (32 pages, 7 unnumbered pages) : illustrations text txt rdacontent computer c rdamedia online resource cr rdacarrier "June, 1975." "Final technical report, contract 0/SU-36100-4-0285." Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. Some pages rotated in this copy. Includes bibliographical references (pages 26-32). "This report is concerned with the investigation of pseudo-rate control of very flexible satellites. It is particularly applicable to communications satellites because of their high power demands. The nondimensional equations are first derived in Section 2, then general design considerations including practical choices of system parameters are carried out in Section 3. Equations that reveal the effects of the flexibility parameters on the switching conditions of the controller are derived in Section 4. The results obtained show in a qualitative manner how the interaction increases as the flexible appendage grows, as the unconstrained natural frequency decreases, as the damping factor decreases, and as the excitation increases. The effect of structural flexibility on fuel consumption and stability is then investigated in Sections 5 and 6"--Summary. Issued also in print format. Artificial satellites Attitude control systems. Artificial satellites in telecommunication. Flexible structures. Satellites artificiels Systèmes de commande d'orientation. Satellites artificiels dans les télécommunications. Structures flexibles. Canada. Department of Communications. University of Toronto. Institute for Aerospace Studies. PDF 3.68 MB https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-446-1975-eng.pdf