脉搏爆炸火箭引擎(PDRE ) 要求氧化剂的周期的供应,造成并且清除气体。一个旋转阀门的集会被制作在这研究控制周期的供应。氧和液体航空煤油分别地被用作氧化剂和燃料。与象 50 mJ 一样低的点火精力,一个平常的汽车火花塞子被用来开始燃烧。PDRE 的稳定的操作与操作频率从 1 Hz 到 10 Hz 被完成。试验性地测量的压力在 1 Hz 是比在 13% 的理论价值低的, 37% 也在 10 Hz,并且在那里存在在不同操作频率的速度赤字。这两二现象主要由于取决于液体燃料的粉碎成原子和蒸发的微滴尺寸被相信。
The pulse detonation rocket engine (PDRE) requires periodic supply of oxidizer, fuel and purge gas. A rotary-valve assembly is fabricated to control the periodic supply in this research. Oxygen and liquid aviation kerosene are used as oxidizer and fuel respectively. An ordinary automobile spark plug, with ignition energy as low as 50 mJ, is used to initiate combustion. Steady operation of the PDRE is achieved with operating frequency ranging from 1 Hz to 10 Hz. Experimentally measured pressure is lower than theoretical value by 13% at 1 Hz and 37% at 10 Hz, and there also exists a velocity deficit at different operating frequencies. Both of these two phenomena are believed mainly due to droplet size which depends on atomization and vaporiza-tion of liquid fuel.