Membership
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Fellow American Society of Mechanical Engineers (Lewis F. Moody award 1996)
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American Institute of Aeronautics and Astronautics (associate editor)
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World Innovation Foundation
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Institute Mechanical England (Dugald Clerk prize 1991)
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Hong Kong Institution Engineers (editor)
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Royal Aeronautical Society; International Academy Astronautics
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New York Academy Sci.
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Nevada Academy Sci.
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Arizona Academy Sci.
