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Author: Robert T. Jones
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 18
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Book Description
The theory of small disturbances is applied to the calculation of the pressure distribution and drag of a closed body of revolution traveling at supersonic speeds. It is shown that toward the rear of the body the shape of the pressure distribution is similar to that for subsonic flow. For fineness ratios between 10 and 15 the theoretical wave drag is of the same order as probable values of the frictional drag.
Author: Robert T. Jones
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 18
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Book Description
The theory of small disturbances is applied to the calculation of the pressure distribution and drag of a closed body of revolution traveling at supersonic speeds. It is shown that toward the rear of the body the shape of the pressure distribution is similar to that for subsonic flow. For fineness ratios between 10 and 15 the theoretical wave drag is of the same order as probable values of the frictional drag.
Author: Donald L. Lansing
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 48
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Book Description
Author: Reuben Bond
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 36
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Book Description
Linearized slender-body theory is applied to the computation of aerodynamic forces on an oscillating, or deforming, body in supersonic flow. The undeformed body is a body of revolution and the deformed body is represented by movement of a line through the centers of the cross sections which are assumed to remain circular. The time dependence is based on sinusoidal motion. For a body of vanishing thickness the slender-body theory yields the apparent mass approximation as it is obtained for incompressible crossflow around a cylinder. Both linearized slender-body theory and the apparent mass approximation are used to calculate the pitching-moment coefficients on a rigid slender body with a parabolic arc nose cone, and these coefficients are compared with some experimental results. (Author).
Author: Milton Van Dyke
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 36
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Book Description
Slender-body theory for subsonic and supersonic flow past bodies of revolution is extended to a second approximation. Methods are developed for handling the difficulties that arise at round ends. Comparison is made with experiment and with other theories for several simple shapes.
Author: Donald L. Lansing
Publisher:
ISBN:
Category :
Languages : en
Pages : 1
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Book Description
The linearized potential theory for supersonic flow about slender bodies of revolution undergoing harmonic oscillations is presented. The lift per unit length and the lift and moment coefficients on an arbitrary shape are expanded to the fifth power of the frequency. The theory is applied to a rigid cone undergoing harmonic translation and pitching motions. The results are compared with slender-body theory for the oscillating case and with Van Dyke's secondorder theory for the seady case. (Author).
Author: Johns Hopkins University. Applied Physics Laboratory
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 374
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Author: William A. Cassels
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 76
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Book Description
Boundary-layer transition by the sublimation and impact-pressure techniques and force tests have been performed on three Haack-Adams bodies of revolution of fineness ratios 7, 10, and 13 at zero angle of attack for free-stream Mach numbers of 2.00, 2.75, and 4.63 and a range of Reynolds numbers based on model length of 6 to 15 X 10(to the 6 power) with and without a roughness strip. The grit method of inducing turbulence was found to provide for a nearly complete turbulent flow over the models at the lower Mach numbers and higher Reynolds numbers considered in this study while the amount of trip drag was less than 8 percent of the model drag with transition fixed. A method of interpreting sublimation data was discussed and used and the results compared well with the impact-pressure results.
Author: M. J. Lighthill
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Michael Schorling
Publisher:
ISBN:
Category : Lifting bodies (Aeronautics)
Languages : en
Pages : 60
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Book Description
Solving exact gas dynamic equations for supersonic flows far from axis of slender lifting bodies.
Author: Max F. Platzer
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 68
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Book Description
