Spacecraft launch depressurization loads

Sanz Andres, Angel Pedro; Santiago Prowald, Julián B. y Ayuso Barea, A. (1997). Spacecraft launch depressurization loads. "Journal of Spacecraft and Rockets", v. 34 (n. 6); pp. 805-810. ISSN 0022-4650.


Título: Spacecraft launch depressurization loads
  • Sanz Andres, Angel Pedro
  • Santiago Prowald, Julián B.
  • Ayuso Barea, A.
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Spacecraft and Rockets
Fecha: Diciembre 1997
Volumen: 34
Escuela: E.T.S.I. Aeronáuticos (UPM) [antigua denominación]
Departamento: Vehículos Aeroespaciales [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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The pressure variation inside the launch vehicle fairing during climb through the atmosphere induces structural loads on the walls of closed-type spacecrafts or equipment boxes. If the evacuation of the air is not fast enough, excessive pressure loading can result in damage of elements exposed to the rising pressure jump, which depends mainly on the geometry of venting holes, the effective volume of air to be evacuated, and the characteristic time of pressure variation under the fairing. A theoretical study of the reservoir discharge forced by the fairing time-dependent pressure variation is presented. The basic mathematical model developed can yield both a numerical solution for the pressure jump and an asymptotic solution for the most relevant case, the small-prcssurc-jump limit, showing the dependence on a single nondimensional parameter: the ratio of the reservoir discharge to the fairing pressure profile characteristic times. The asymptotic solution validity range upper limit, obtained by comparison with the numerical solution, is determined by the starting of choked operation. Very high sensitivity of the maximum pressure jump to the ratio of characteristic times has been observed. Another relevant finding is that the pressure profiles for different launchers can be considered similar when rewritten in appropriate form and only their characteristic times are required for the analysis. The simple expressions of the asymptotic solution are a useful tool for preliminarily sizing the reservoir discharge geometry and estimating depressurization loads

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ID de Registro: 40032
Identificador DC:
Identificador OAI:
Identificador DOI: 10.2514/2.3290
URL Oficial:
Depositado por: Biblioteca ETSI Aeronauticos
Depositado el: 25 Abr 2016 13:45
Ultima Modificación: 25 Abr 2016 13:45
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