Investigation Of A Free Tip Rotor Configuration For Research On Spanwise Life Distributions And Wake Velocity Surveys Of A Semi Span Wing With A Discontinuous Twist
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Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 208 |
Release | : 2018-07-25 |
Genre | : |
ISBN | : 9781724264589 |
A wind tunnel test was conducted in the NASA Ames 7 x 10 Foot Wind Tunnel to investigate the lift distribution on a semi-span wing with a discontinuous change in spanwise twist. The semi-span wing had a tip with an adjustable pitch angle independent on the inboard section pitch angle simulating the free-tip rotor blade when its free-tip is at a deflected position. The spanwise lift distribution over the wing and the tip were measured and three component velocity surveys behind the wing were obtained with a three dimensional laser Doppler velocimeter (LV) with the wing at one angle of attack and the tip deflected at different pitch angles. A six component internal strain gage balance was also used to measure total forces and moments on the tip. The three dimensional lift was computed from the two dimensional life distributions obtained from the LV and from the strain gage balance. The results from both experimental methods are shown to be in agreement with predictions made by a steady, three dimensional panel code, VSAERO. Fortin, Paul and Kumagai, Hiroyuki Unspecified Center NASA-CR-184948, NAS 1.26:184948 NCC2-175...
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Total Pages | : 816 |
Release | : 1989 |
Genre | : Aeronautics |
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Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
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Release | : 1994 |
Genre | : Government publications |
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Total Pages | : 1700 |
Release | : 199? |
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Total Pages | : 540 |
Release | : 1990 |
Genre | : Aeronautics |
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A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
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Total Pages | : 532 |
Release | : 1990 |
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Total Pages | : 950 |
Release | : 1994-12 |
Genre | : Government publications |
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Author | : Advisory Committee on Technology and Society |
Publisher | : National Academies Press |
Total Pages | : 1298 |
Release | : 1989 |
Genre | : Social Science |
ISBN | : 9780309037860 |
Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.
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Total Pages | : 944 |
Release | : 1989 |
Genre | : Science |
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Total Pages | : 700 |
Release | : 1990 |
Genre | : Aeronautics |
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