An Experimental Study of Flow in a Nozzle Designed to Produce a Parallel Jet at Supersonic Speed PDF Download
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Author: Thomas V. Hennessey
Publisher:
ISBN:
Category :
Languages : en
Pages : 92
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Author: Thomas V. Hennessey
Publisher:
ISBN:
Category :
Languages : en
Pages : 92
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Author: Thomas Vincent Hennessey
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages :
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Author: American Helicopter Society
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 818
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 456
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Book Description
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.
Author: John J. Bertin
Publisher:
ISBN:
Category :
Languages : en
Pages : 112
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An underexpanded, supersonic jet of cold nitrogen was exhausted into a constrictive, stepped launch tube. For one launch tube, the reduction in cross section was accomplished abruptly by a rectangular step. For the other launch tube, the reduction in cross section was accomplished gradually by a 15 degree-ramp. Thirty-seven static-pressure orifices were located along the walls of the two tubes. By varying the location of the nozzle exit-plane with respect to the step location, one could simulate (in a quasi-steady manner) the effect of movement of the rocket through the launch tube. Pitot probes located in the annular region between the simulated rocket-nozzle and the launch tube provided information about the reverse, or blow-by, flow created when the nozzle exhaust encountered the constriction. (Modified author abstract).
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781723836725
Category : Science
Languages : en
Pages : 50
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An experimental and computational study was conducted on a high-speed, single-expansion-ramp nozzle (SERN) concept designed for efficient off-design performance. The translating-throat SERN concept adjusts the axial location of the throat to provide a variable expansion ratio and allow a more optimum jet exhaust expansion at various flight conditions in an effort to maximize nozzle performance. Three design points (throat locations) were investigated to simulate the operation of this concept at subsonic-transonic, low supersonic, and high supersonic flight conditions. The experimental study was conducted in the jet exit test facility at the Langley Research Center. Internal nozzle performance was obtained at nozzle pressure ratios (NPR's) up to 13 for six nozzles with design nozzle pressure ratios near 9, 42, and 102. Two expansion-ramp surfaces, one concave and one convex, were tested for each design point. Paint-oil flow and focusing schlieren flow visualization techniques were utilized to acquire additional flow data at selected NPR'S. The Navier-Stokes code, PAB3D, was used with a two-equation k-e turbulence model for the computational study. Nozzle performance characteristics were predicted at nozzle pressure ratios of 5, 9, and 13 for the concave ramp, low Mach number nozzle and at 10, 13, and 102 for the concave ramp, high Mach number nozzle.Deere, Karen A. and Asbury, Scott C.Langley Research CenterNAVIER-STOKES EQUATION; THROATS; EXHAUST NOZZLES; NOZZLE DESIGN; COMPUTATIONAL FLUID DYNAMICS; K-EPSILON TURBULENCE MODEL; NOZZLE EFFICIENCY; FLOW VISUALIZATION; TRANSONIC FLIGHT; SUPERSONIC FLIGHT; SCHLIEREN PHOTOGRAPHY
Author: Allen F. Donovan
Publisher: Princeton University Press
ISBN: 140087503X
Category : Science
Languages : en
Pages : 1021
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Volume VIII of the High Speed Aerodynamics and Jet Propulsion series. This volume includes: performance calculation at high speed; stability and control of high speed aircraft; aeroelasticity and flutter; model testing; transonic wind tunnels; supersonic tunnels; hypersonic experimental facilities; low density wind tunnels; shock tube; wind tunnel measurements; instrumented models in free flight; piloted aircraft testing; free flight range methods. Originally published in 1961. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Author:
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ISBN:
Category : Nuclear energy
Languages : en
Pages : 1118
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 580
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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)
Author: Stephen W. D. Wolf
Publisher:
ISBN:
Category : Supersonic nozzles
Languages : en
Pages : 88
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Book Description
