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: 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: 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: 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: M. J. Lighthill
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Max F. Platzer
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 68
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Book Description
Author: Milton M. Klein
Publisher:
ISBN:
Category : Air flow
Languages : en
Pages : 60
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Book Description
An integral method, previously used to obtain compressible flow past two-dimensional shapes, is applied to the calculation of compressible potential flow past slender bodies of revolution. Good agreement of the resulting velocities on ellipsoids of revolution with those obtained by other methods was found. Flow-field conditions, in particular, local supersonic regions, are calculated and discussed. The free-stream Mach number beyond which a continuous potential-flow solution ceases to exist is found to be very close to 1.
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: H. Julian Allen
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 26
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Book Description
The simplified solution for the pressure distribution of slender inclined bodies of revolution is developed. The solution should be suitable for bodies of high fineness ratio even at low supersonic speeds, provided the angle of attack is small. Comparison with low-speed experimental results indicates that the observed flow separation phenomena can be explained in terms of the calculated pressure distributions together with the theory of oblique viscous flows.
