Experimental Study and Simulation on Unsteady Temperature Characteristics of Solid Rocket Propellant

摘要

The temperature variation and distribution of rocket propellant under unsteady environmental temperature are experimentally studied by measuring the temperature of different position within rocket engine in this paper. The weighting average temperature of propellant are calculated according to the tested results, and be compared with the temperature in different position. A two-dimension unsteady heat transfer equation with third boundary condition is used to simulate the temperature variation process of propellant under certain presumption. Simulated propellant temperatures are well agree with the corresponding ones, and the simulated average temperature are coincidence with the weighting average temperature. So the weighting average temperature can be used in the ballistic preparation of rocket launch.