【摘要】 利用多种光谱技术提出了一种确定复合燃料冲击点火延迟时间和临界条件的新方法。先用谱仪确定燃料各组分冲击点火最早出现的中间产物,对于环氧丙烷复合燃料中,环氧丙烷氧原子辐射总是先出现;对于硝酸丙酯,NO2辐射总是先出现;而铝反应先形成AlO;把三台单色谱仪分别调至O、NO2、AlO波长处,并利用压力传感器测得冲击波到达样品的时间便可确定环氧丙烷复合燃料冲击点火延迟时间。这种方法比国内外常用光电二极管(峰值波长约在800 nm)的结果更接近实际值。环氧丙烷复合燃料受冲击后,冲击点火临界压力Pc=1.25 MPa,点火延迟时间为8μs。更多还原

【Abstract】 A new method is suggested by some spectra techniques. The delay time and critical condition of shock ignition are determined using the method, i. e. intermediate product of the most early emergence for each element loaded compound fuel is determined at first using three spectrometers, the emergence of intermediate product of O,NO2,AlO for epoxypropane, propyl-nitrate, aluminium after shock ignition is always most early, respectively. The three monochrometers are adjusted to wave length of O, NO2 , AlO and the time of arriving for shock wave is measured by gauge. The critical condition of shock ignition for epoxypropane compound fuel is determined. The result determined by the method is better than that of u-sing photo-electric diode whose peak wave length is about 800 nm. The critical ignition pressure Pc = l. 25 MPa, shock ignition delay time is 8 μs.更多还原