Linear Approach to the Orbiting Spacecraft Thermal Problem

Gaite Cuesta, José y Fernandez Rico, German (2012). Linear Approach to the Orbiting Spacecraft Thermal Problem. "Journal of Thermophysics and Heat Transfer", v. 26 (n. 3); pp. 511-522. ISSN 0887-8722.


Título: Linear Approach to the Orbiting Spacecraft Thermal Problem
  • Gaite Cuesta, José
  • Fernandez Rico, German
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Thermophysics and Heat Transfer
Fecha: Julio 2012
Volumen: 26
Escuela: Instituto de Microgravedad Ignacio Da Riva (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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A linear method is developed for solving the nonlinear differential equations of a lumped-parameter thermal model of a spacecraft moving in a closed orbit. This method, based on perturbation theory, is compared with heuristic linearizations of the same equations. The essential feature of the linear approach is that it provides a decomposition in thermal modes, like the decomposition of mechanical vibrations in normal modes. The stationary periodic solution of the linear equations can be alternately expressed as an explicit integral or as a Fourier series. This method is applied to a minimal thermal model of a satellite with ten isothermal parts (nodes), and the method is compared with direct numerical integration of the nonlinear equations. The computational complexity of this method is briefly studied for general thermal models of orbiting spacecraft, and it is concluded that it is certainly useful for reduced models and conceptual design but it can also be more efficient than the direct integration of the equations for large models. The results of the Fourier series computations for the ten-node satellite model show that the periodic solution at the second perturbative order is sufficiently accurate.

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ID de Registro: 20198
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Identificador DOI: 10.2514/1.T3748
URL Oficial:
Depositado por: Memoria Investigacion
Depositado el: 22 Oct 2013 16:59
Ultima Modificación: 21 Abr 2016 22:44
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