Development of the Propulsion System Using Detonations

目前的研究项目是爆轰推进系统，它被期望成为一种高性能的化学推进动力装置。本研究的主要目的是研究脉冲爆震发动机（PDE）的基本原理，它目前被认为是一种比冲压式加速器或斜爆震发动机等其他思想更为现实的爆震推进系统。PDE系统由入口、点火器、爆震管和喷嘴系统组成，根据情况包括涡轮。实验主要由三种设备进行：一种是用于PDE的长期运行和热测量系统的标定。第二个是一个多管PDE操作高频率，如超过100赫兹，获得爆震管和喉口之间的干扰数据。第三种是起爆管，目的是起爆。研究了几种起爆剂，并对不同气体混合物的起爆性能进行了研究。通过理论分析和数值模拟对PDE的性能进行了分析研究。对谐振腔的爆轰特性也进行了数值研究。在本项目期间，除了吸气式发动机的进气，我们已经到达了PDE技术发展的入口。

Present research project is on the detonation propulsion system, which has been expected as a high performance chemical propulsive power unit. The main purpose of this study the fundamental elements of the pulse detonation engine (PDE), which is, for the moment, considered as a more realistic detonation propulsion systems than others ideas, such as the ram accelerator or the oblique detonation engine. The PDE system consists of the inlet, the igniter, detonation tube, and the nozzle system including turbine depending on the case. The experiments are carried by mainly three apparatus: The first one is for the long-term operations of PDE and the calibration of the thermal measurement system. The second one is a multi-tube PDE operating high frequency such as over 100 Hz, getting data on the interference between the detonation tubes and throat nozzle. The third one is a detonation tube, which is aimed at the initiation of detonation. Several kind of detonation initiator is investigated, as well as the detonation properties for various gas mixtures are inquired. Analytical investigations on the performance of PDE is made by theoretical analysis as well as numerical simulations. Special feature of detonation is also investigated numerically as resonator. In the period of this project, we have arrived at the entrance of the technical development of PDE, except for the air intake of the air-breathing engine.