A theoretical and experimental study of the hypersonic dynamic stability of blunt axisymmetric conical and power-law shaped bodies PDF Download
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Author: Mahmood Khalid
Publisher:
ISBN:
Category :
Languages : en
Pages : 175
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Author: Mahmood Khalid
Publisher:
ISBN:
Category :
Languages : en
Pages : 175
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Author: John David Anderson (Jr.)
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 78
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New results are presented for inviscid, supersonic and hypersonic blunt-body flow fields obtained with a numerical time-dependent method patterned after that of Moretti and Abbett. In addition, important comments are made with regard to the physical and numerical nature of the method. Specifically, numerical results are presented for two-dimensional and axisymmetric parabolic and cubic blunt bodies as well as blunted wedges and cones; these results are presented for zero degrees angle of attack and for a calorically perfect gas with gamma = 1.4. The numerical results are compared with other existing theoretical and experimental data. Also, the effects of initial conditions and boundary conditions are systematically examined with regard to the convergence of the time-dependent numerical solutions, and the point is made that the initial conditions can not be completely arbitrary. Finally, in order to learn more about the performance of the time-dependent method, a numerical experiment is conducted to examine the unsteady propagation and region of influence of a slight pressure disturbance introduced at a point on the surface of a blunt body.
Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 522
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Author: L. A. Marshall
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 98
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The report presents a summary of the important results obtained on a combined analytical and experimental program for investigation of the hypersonic dynamic stability of re-entry vehicles. An unsteady flow field solution is described which predicts the static and dynamic stability characteristics for vehicles which are executing small amplitude oscillations about zero angle of attack. Solutions were obtained for sharp and blunted, axisymmetric and two-dimensional shapes in real gas equilibrium flow. The experimental program was conducted in AEDC tunnel 'C' at Mach 10 and in the Ling-Temco-Vought Hot Shot tunnel at Mach 14 and 20 to obtain dynamic stability characteristics of a 10 degree cone. Data are presented to show the effect of bluntness ratio, reduced frequency, center of gravity location, Reynolds number and Mach number. Comparisons are made with various theoretical results and limited correlations are shown which establish significant trends.
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Author: General Electric Company
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 128
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 44
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1124
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Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 862
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 828
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Author: British Library. Lending Division
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 654
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