Development of the Propulsion System Using Detonations

爆轰推进系统是一种高性能的化学推进动力装置。脉冲爆震发动机（PDE）是目前被认为是比冲压加速器或斜爆震发动机等更现实的爆震推进系统。PDE系统由进气道、点火器、爆震管和喷管系统组成，喷管系统包括涡轮机，具体取决于具体情况。实验主要由三个装置完成：第一个装置用于PDE的长期运行和热测量系统的校准。第二个是多管PDE，工作频率超过100 Hz，获得了爆震管与喉道喷管之间的干扰数据。第三个是爆轰管，它的目的是起爆。研究了几种爆轰引发剂，并探讨了不同混合气体的爆轰特性。通过理论分析和数值模拟，对PDE的性能进行了分析研究。本文还数值研究了共振器作用下爆轰波的特性。在本项目期间，除了吸气式发动机的进气道外，我们已经到达了PDE技术开发的入口。

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.