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      <marc:subfield code="a">Hughes, P. C. </marc:subfield>
      <marc:subfield code="q">(Peter Carlisle), </marc:subfield>
      <marc:subfield code="d">1940- </marc:subfield>
      <marc:subfield code="e">author.</marc:subfield>
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      <marc:subfield code="a">Development of dynamics models &amp; control system design for third generation spacecraft : </marc:subfield>
      <marc:subfield code="b">(executive summary) / </marc:subfield>
      <marc:subfield code="c">author: P.C. Hughes ; prepared by: Dynacon Enterprises Ltd.</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="264" ind1=" " ind2="1">
      <marc:subfield code="a">Ottawa, Canada : </marc:subfield>
      <marc:subfield code="b">Department of Communications, Space Program, </marc:subfield>
      <marc:subfield code="c">August 1982.</marc:subfield>
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      <marc:subfield code="a">1 online resource (iv, 13 pages) : </marc:subfield>
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      <marc:subfield code="a">online resource</marc:subfield>
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    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">"Unclassified."</marc:subfield>
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    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">"Dynacon report MSAT-9."</marc:subfield>
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    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">"Department of Supply and Services Contract no: 15ST.36001-1-0953."</marc:subfield>
    </marc:datafield>
    <marc:datafield tag="500" ind1=" " ind2=" ">
      <marc:subfield code="a">Digitized copy from print [produced by Innovation, Science and Economic Development Canada].</marc:subfield>
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      <marc:subfield code="a">Includes bibliographical references (page 13).</marc:subfield>
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      <marc:subfield code="a">"The Space Mechanics Directorate and the other cognizant technical groups within the Department of Communications (DOC) have correctly identified flexible spacecraft control as a key technology area for the foreseeable future. The economics of placing structures in Earth orbit require lightweight structures; the technology specifications of future communications satellites demand more accurate pointing, configurational integrity, and even control of the detailed 'shape' or 'figure'. Together, these two trends make evident that the dynamical modeling and control system design for communications satellites will continue to be the subject of advanced technology effort in the decades ahead"--Introduction, page 1.</marc:subfield>
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      <marc:subfield code="a">Space vehicles</marc:subfield>
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      <marc:subfield code="a">Space vehicles</marc:subfield>
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      <marc:subfield code="a">Satellites artificiels</marc:subfield>
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      <marc:subfield code="a">Véhicules spatiaux</marc:subfield>
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      <marc:subfield code="a">Véhicules spatiaux</marc:subfield>
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      <marc:subfield code="a">Canada. </marc:subfield>
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      <marc:subfield code="a">Dynacon Enterprises Ltd., </marc:subfield>
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      <marc:subfield code="q">PDF</marc:subfield>
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      <marc:subfield code="u">https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-1-82-056-eng.pdf</marc:subfield>
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