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Title
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Study of Hypersonic Aerodynamic Decelerators Incorporating Lift
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Date
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1961
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Index Abstract
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Contrails and DTIC
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Photo Quality
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Not Needed
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Report Number
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WADD TR 60-706
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Creator
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Hill, Jaques A. F.
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Corporate Author
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Massachusetts Institute Of Technology Naval Supersonic Laboratory
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Laboratory
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Aeronautical Accessories Laboratory
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Extent
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213
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Identifier
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AD0253295
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AD0253295
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Access Rights
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OTS
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Distribution Classification
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1
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Contract
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AF 33(616)-6474
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DoD Project
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None Given
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DoD Task
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61526
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DTIC Record Exists
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Yes
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Distribution Change Authority Correspondence
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AFFDL LTR
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Special Scanning Requirements
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Fold out pages
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Report Availability
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Full text available by request
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Date Issued
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1961-03
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Abstract
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An evaluation is presented of the use of lightweight lifting surfaces for the re-entry of earth satellites into the atmosphere. The flight paths considered begin with a pullout to horizontal flight high in the atmosphere. After some deceleration in horizontal flight the vehicle enters a classic equilibrium glide and eventually a subsonic glide to a landing point. The flight path is analyzed in a very general form and the results presented, which include estimates of the temperatures and deceleration rates encountered, are applicable for a very wide range of aerodynamic coefficients and wing loadings.
A general design for an inflatable vehicle is proposed, and results are presented of wind-tunnel tests of 22 variations of the basic configuration; the aerodynamic coefficients measured at M = 7.6 are approximately corrected to flight conditions at 24,000 ft/sec and 295,000 feet. Using these results, the wing loadings required to limit the heating to acceptable values are computed for a range of entry angles.
Finally, rough vehicle weight estimates are presented for a range of payload weights. It is concluded that the kind of vehicle proposed is useful for the re-entry of satellites at entry angles up to about 3°.
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Subject
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Deceleration
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Hypersonic Flow
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Pneumatic Equipment
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Wings
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Atmosphere Entry
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Lift
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Recovery
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Reentry Vehicles
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Publisher
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Wright-Patterson Air Force Base, OH : Wright Air Development Division, Air Research and Development Command, United States Air Force
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Corporate Report Number
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Technical Report 446
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Distribution Conflict
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No
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Type
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report
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Provenance
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Lockheed Martin Missiles & Fire Control
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IIT