Aerodynamic Heating Numerical Simulation of Terminal-Sensitive Projectile at Deceleration and Despinning Trajectory

Abstract

Aero-heating problem severely affects the performance of terminal-sensitive projectile (TSP) when projected out of the carrier capsule by the gunpowder gas at a high speed. In this paper, based on the typical ballistic data and airflow physical parameters at deceleration and despinning trajectory, the aerodynamic thermal characteristics of a TSP was simulated by Fluent, and the transient temperature distributions were obtained under the different flying conditions. Finally, we got stagnation temperatures by the numerical simulations which were similar to those by the engineering evaluation, and demonstrate the effectiveness of the simulation method. The results are valuable to the research of thermal protection and infrared signature of TSP.

Numerical simulation and analysis of wall temperature based on the tangent oval model under different speed and radiation conditions

“…The method was suitable for the calculation of simple shape, and it's difficult to achieve accurate calculation without considering the multi-factor coupling effect. With the development of computers, the mature commercial software, such as Fluent and Ansys possessing high efficiency and visualization, has become an important technical method to calculate the wall temperature field of aircraft [9].…”