##### THERMAL MATHEMATICAL MODEL OF THE H-SHAPED BLOCK OF A NONHERMETIC
INSTRUMENTAL COMPARTMENT OF A GEOSTATIONARY SPACECRAFT

V. A. Burakov,^{a} V. V. Elizarov,^{a} E. N. Korchagin,^{b}
V. P. Kozhukhov,^{b} A. S. Tkachenko,^{a} and I. V. Shcherbakova^{a}
UDC 629.78.048.7.001.24
A dynamic thermal mathematical model in distributed-lumped
parameters, a computational algorithm, and a software of numerical
calculations have been developed. The results of these calculations
for multidimensional nonstationary temperature fields in operation
of the on-board devices and a network of uncontrolled heat pipes in
a nontraditional H-shaped block of the service-system module of a
nonhermetic instrumental compartment of promising durable geostationary
spacecraft under the conditions of orbital operation have been obtained.
^{a}Scientific-Research Institute
of Applied Mathematics and Mechanics at Tomsk State University, Tomsk,
Russia; ^{b}Academician M. F. Reshetnev Science
and Production Association of Applied Mechanics, Zheleznogorsk, Russia;
email: bva@niipmm.tsu.su. Translated from Inzhenerno-Fizicheskii Zhurnal,
Vol. 76, No. 4, pp. 142-149, July-August, 2003. Original article
submitted May 6, 2002; revision submitted November 11, 2002.