Approximate Solutions for Aerodynamic Heating of Reentry Vehicles PDF Download
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Author: Charles J. Ruger
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 1
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Book Description
Aerodynamic heating of space vehicles during reentry with constant aerodynamic coefficients is considered. General relations for the conditions at the maximum heating rate, and for the total heat input at the stagnation point from entry to any point in the trajectory, are developed. The relations are not subject to the restrictions of skip or exit trajectories with entry velocity greater than the circular speed. The relation presented for the heat input has 2 parts. The first, which is the most significant part of the heat input, is of closed form. The second part is left in terms of an integral and evaluated by Simpson's rule. Only a small number of steps are required in the numerical evaluation of this integral, thus making this solution much shorter than direct numerical integration. The numerical results calculated from this solution show good agreement with those from the direct numerical integration. (Author).
Author: Charles J. Ruger
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 1
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Book Description
Aerodynamic heating of space vehicles during reentry with constant aerodynamic coefficients is considered. General relations for the conditions at the maximum heating rate, and for the total heat input at the stagnation point from entry to any point in the trajectory, are developed. The relations are not subject to the restrictions of skip or exit trajectories with entry velocity greater than the circular speed. The relation presented for the heat input has 2 parts. The first, which is the most significant part of the heat input, is of closed form. The second part is left in terms of an integral and evaluated by Simpson's rule. Only a small number of steps are required in the numerical evaluation of this integral, thus making this solution much shorter than direct numerical integration. The numerical results calculated from this solution show good agreement with those from the direct numerical integration. (Author).
Author: Arthur B. Lewis (Jr.)
Publisher:
ISBN:
Category : Aerodynamic heating
Languages : en
Pages : 122
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Book Description
The development of complex lifting configurations and high speed maneuvering vehicles has emphasized the need for numerical techniques to predict aerodynamic heating rates as a function of the vehicle trajectory. These numerical programs are not expected to eliminate the requirements for wind tunnel and flight testing, but will be an aid to more efficient use of experimentation time and improve confidence that all potential problem areas on the vehicle have been examined. Three programs, the Hypersonic Arbitrary Body Program, the MINIVER Program, and a third program were examined to determine their usefulness for vehicles with non-circular cross sections and large flat areas as exemplified by lifting reentry vehicles. The MINIVER code was found to be unsuitable for this; the Hypersonic Arbitrary Body Program was applicable to these shapes, but because of program limitations was used for only limited calculations. The last program also had limitations in the areas of geometry description and surface pressure calculations. Efforts were made to remove these limitations and several shapes were investigated. The ultimate goal of this effort was to extend the capabilities of one or more of the heating codes; while no effort was made to improve MINIVER or the Hypersonic Arbitrary Body Program, significant improvements were made in the last program and inviscid flow field program.
Author: Wilbur L. Hankey
Publisher: AIAA
ISBN: 9781600861062
Category : Space vehicles
Languages : en
Pages : 160
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Book Description
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1460
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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: E. C. Lemmon
Publisher:
ISBN:
Category : Space vehicles
Languages : en
Pages : 64
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Book Description
Author: Patrick Gallais
Publisher: Springer Science & Business Media
ISBN: 3540736476
Category : Technology & Engineering
Languages : en
Pages : 365
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Book Description
Based on a long engineering experience, this book offers a comprehensive and state-of-the-art analysis of aerodynamic and flight mechanic entry topics. This updated edition had new chapters on Re-entry on Mars mission, flight quality, rarefied aerodynamics and re-entry accuracy. In addition, it provides a large set of application exercises and solutions.
Author:
Publisher:
ISBN:
Category : Industrial arts
Languages : en
Pages : 1118
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Book Description
Author: H. J. Allen
Publisher:
ISBN:
Category :
Languages : en
Pages : 112
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Book Description
Author: Steven C. Gonzales
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
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Book Description
Author: Robert T. Swann
Publisher:
ISBN:
Category : Ablative materials
Languages : en
Pages : 32
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Book Description
Equations governing the performance of charring ablators, subject to a diffusion-controlled oxidation mechanism of char removal, are derived. A solution is presented for the case of a constant-enthalpy level. The effects of various material properties and environmental parameters are discussed.
