MATHEMATICAL MODEL OF HEAT TRANSFER IN THE U-SHAPED BLOCK 
OF THE UNPRESSURIZED DEVICE COMPARTMENT OF A GEOSTATIONARY SPACECRAFT

V. A. Burakov,* E. N. Korchagin,a 
V. P. Kozhukhov,a A. S. Tkachenko,b
and I. V. Shcherbakovaa

UDC 629.78.048.7.001.24

A new dynamic mathematical distributed-lumped parameter model of heat transfer 
in the U-shaped block of the service-system module of the unpressurized device 
compartment of a promising geostationary orbiting spacecraft having a long
service life is proposed. A computational algorithm and software for calcula-
ting the multidimensional nonstationary temperature fields arising in the pro-
cess of operation of the airborne-equipment devices and the system of nonregu-
lated heat pipes in the indicated block have been developed. Results of calcu-
lation of these fields are presented.

aAcad. M. F. Reshetnev Scientific-Production Company of Applied 
Mechanics, Zheleznogorsk, Russia; bTomsk State Pedagogical 
University, Russia; cScientific-Research Institute of Applied 
Mathematics and Mechanics, Tomsk University, 36 Lenin Ave., Tomsk, 634050, 
Russia; email: gla@niipmm.tsu.ru. Translated from Inzhenerno-Fizicheskii 
Zhurnal, Vol. 80, No. 6, pp. 9-17, November-December, 2007. 
Original article submitted June 7, 2006.