Alekseev A.K. Molotilin Yu.A. Shuvalov M.P.

Indirect Determination of Heat Flux to a Lander Heat Protection System

J. of Thermophysics and Heat Transfer, v. 9, N 3, 1995, pp 494-498.

ABSTRACT: A feasibility of the heat transfer history determination using the end-point state of irreversible processes in a spacecraft heat protection system is considered. The special Inverse Conduction Problem in materials of heat shield is discussed. The requirements are formulated for the composition and accuracy of measurements within the heat protection material. The parameterization of the heat flux is performed by means of specified functions for laminar and turbulent flow, that allow one to reduce the number of parameters and improves the accuracy of the approximation. The results of numerical experiments corroborate a feasibility of the heat flux reconstruction if additional a priori information regarding trajectory parameters is present.