Dynamic Simulation And Performance Improvement Of Airborne Pedants Ejection System

This paper introduces the current situation of the suspension ejection system on airplane, as well as its research level, types and the development trend home and abroad. It also presents the structure and design principles of the blank cartridge powered ejection system. Three mathematical physics models of asymmetrical ejection ware respectively established for three peak pressure reducing equipments and the numerical simulation. ware carried out. Through changing various structural parameters of the different peak pressure reducing device and a great deal of numerical analysis, the influence rules have been found on working performance of the ejection system. And with further calculating, the influence rules have been analyzed on the working performance when several structural parameters of the peak pressure reducing devices are changed simultaneously.An Orthogonal Optimization method has been used to the ejection system optimization. The method needs less calculating work and is easy to operate. And it shows an evident advantage especially in the practical designing process at factories when the optimizing design variables need to be changed or adjusted. During the actualization of the Orthogonal Optimization Design, a method involving both rough and detailed gridding has been used to find out the optimal level of the influencing factors. It not only enables us to find the best parameter relatively faster, but also reduces the calculating workload greatly. Through the combination of Orthogonal Optimization and simulating experiment in this article, it is possible to complete fast and accurately a great deal of experiments which have to be done by factory usually.