Launch Recycling Performance Study Integrated Air Cannons

In order to theoretically research on the structural integrity of solid propellant under the emission load, improve the reliability and security, it requires to study the rocket launch process under low-load. The normal method is adopting live ammunition test which can’t analysis the reason of failure totally and thoroughly, and in this case, we need to provide a testing device to simulate the emission load that can structural integrity of solid propellant under the emission load. This article is using compressed air to research the structural integrity of solid propellant under the emission load according to bottleneck project requirements, build impact load test when charge movement, study the strain characteristics of grain in the process of emission overload impact and after impact, and provide data support for grain strength analysis. The main study shows as the following:First of all, according to the requirements of this project, theoretical calculation of the flow in the air gun, which combines different subjects of interior ballistics, engineering thermodynamics and structure mechanics together, has been performed to determine the essential structural parameters.Secondly, the overall design of air gun has been determined, based on those given structural parameters, and proper gas loop system and electrical control system that has been developed and installed. Subsequently, analyze the test data to optimize and improve structure and performance of this air gun.Last, use CFX Remeshing to numerical simulate the accelerating period of start-up phase.The research work of this thesis will provide theoretical guidance and experimental evidence for the following research project about an air gun of higher diameter.