Analytic Study of Induced Pressure on Long Bodies of Revolution with Varying Nose Bluntness at Hypersonic Speeds

Analytic Study of Induced Pressure on Long Bodies of Revolution with Varying Nose Bluntness at Hypersonic Speeds PDF Author: Vernon Van Hise
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 28

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Book Description
Pressure distributions and shock shapes for a series of cylindrical afterbodies having nose fineness ratios from 0.4 to 4 have been calculated by using the method of characteristics for a perfect gas. The fluid mediums investigated were air and helium and the Mach number range was from 5 to 40. Flow parameters obtained from blast-wave theory give a good correlations of blunt-nose induced pressures and shock shapes. Experimental results are found to be in good agreement with the characteristic calculations. The concept of hypersonic similitude enables good correlation of the results with respect to body shape, Mach number, and ratio of specific heats.

Analytic Study of Induced Pressure on Long Bodies of Revolution with Varying Nose Bluntness at Hypersonic Speeds

Analytic Study of Induced Pressure on Long Bodies of Revolution with Varying Nose Bluntness at Hypersonic Speeds PDF Author: Vernon Van Hise
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 28

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Book Description
Pressure distributions and shock shapes for a series of cylindrical afterbodies having nose fineness ratios from 0.4 to 4 have been calculated by using the method of characteristics for a perfect gas. The fluid mediums investigated were air and helium and the Mach number range was from 5 to 40. Flow parameters obtained from blast-wave theory give a good correlations of blunt-nose induced pressures and shock shapes. Experimental results are found to be in good agreement with the characteristic calculations. The concept of hypersonic similitude enables good correlation of the results with respect to body shape, Mach number, and ratio of specific heats.

NASA Technical Report

NASA Technical Report PDF Author:
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 28

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Book Description


Advances in Applied Mechanics

Advances in Applied Mechanics PDF Author:
Publisher: Academic Press
ISBN: 0080563856
Category : Technology & Engineering
Languages : en
Pages : 339

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Book Description
Advances in Applied Mechanics

Hypersonic Flow Research

Hypersonic Flow Research PDF Author: F.R. Riddell
Publisher: Elsevier
ISBN: 0323142621
Category : Transportation
Languages : en
Pages : 769

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Book Description
Progress in Astronautics and Rocketry, Volume 7: Hypersonic Flow Research compiles papers presented at a conference on hypersonics held at the Massachusetts Institute of Technology in August 1961. This book discusses the low Reynolds number effects, chemical kinetics effects, inviscid flow calculations, and experimental techniques relating to the problems in acquiring an understanding of hypersonic flow. The structure and composition of hypersonic wakes with attendant complex chemical kinetic effects is only briefly mentioned. This text consists of five parts. Parts A to C comprise of theoretical papers on the problems of calculating flow fields at hypersonic speeds. The experimental techniques that are of immediate practical interest in view of the difficulty of flight testing are discussed in Parts D and E. This publication is beneficial to engineers involved in advanced design problems.

The Shock Shape and Shock Detachment Distance for Spheres and Flat-faced Bodies in Low-density, Hypervelocity, Argon Flow

The Shock Shape and Shock Detachment Distance for Spheres and Flat-faced Bodies in Low-density, Hypervelocity, Argon Flow PDF Author: A. B. Bailey
Publisher:
ISBN:
Category : Aerodynamics, Hypersonic
Languages : en
Pages : 72

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Book Description
An experimental investigation was made to determine the pressure distribution, shock shape, and shock detachment distance for spheres and the latter two characteristics for flatfaced bodies in a heated argon flow. The modified Newtonian approximation for the pressure distribution, which is strictly an empirical relationship, gives good results when applied to the first 60 degrees of a hemisphere under conditions where the body boundary layer and the shock layer merge. The natural flow visualization produced as a result of the high total temperature and consequent excitation of the argon enabled this study to be made. Photographs taken of the shocks generated by a series of spheres and flat-faced bodies were analyzed with a photo-densitometer to determine the shock shape and shock detachment distance. The blast analogy predicts a difference in the shape of shocks in argon and air at high Mach numbers and Reynolds numbers. An empirical relationship proposed by Love was used to calculate the shock shape in air for Mach numbers corresponding to those of the present investigation. (Author).

Some Simple Solutions to the Problem of Predicting Boundary-layer Self-induced Pressures

Some Simple Solutions to the Problem of Predicting Boundary-layer Self-induced Pressures PDF Author: Michael H. Bertram
Publisher:
ISBN:
Category : Fluid mechanics
Languages : en
Pages : 58

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Analytical Study of Soft Landings on Gas-filled Bags

Analytical Study of Soft Landings on Gas-filled Bags PDF Author: Jack B. Esgar
Publisher:
ISBN:
Category : Gas
Languages : en
Pages : 732

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NASA Technical Note

NASA Technical Note PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 604

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A Correlation Study of the Bow Wave Profiles of Blunt Bodies

A Correlation Study of the Bow Wave Profiles of Blunt Bodies PDF Author: Alvin Seiff
Publisher:
ISBN:
Category : Fluid mechanics
Languages : en
Pages : 36

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Proceedings of the NASA-University Conference on the Science and Technology of Space Exploration

Proceedings of the NASA-University Conference on the Science and Technology of Space Exploration PDF Author:
Publisher:
ISBN:
Category : Outer space
Languages : en
Pages : 544

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Book Description
A Chinese boy's greatest wish is to be an artist but he is too poor to buy a good brush until a wizard appears and gives him one with magic powers.