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为了研究基于液态燃料的爆震波点火技术,进行了一系列液态煤油/氧气爆震波点火实验。实验中氧气和煤油的供给压力分别为1.0 MPa和0.7 MPa,火花塞点火能量为50 mJ。研究了两相爆震波点火技术的基本特性,实验表明:采用低点火能量能够快速产生充分发展的爆震波,煤油/氧气爆震压力可达4.0 MPa,爆震波速度可达1500 m/s到2001 m/s,尾焰温度约为2075 K。开展了两相爆震波由单管向多管传播的实验,验证了两相爆震波多管点火技术的可行性,目前可实现四管同步点火。实验显示两相爆震波点火技术重复性强,多管点火具有较好的同步性,时间差别为几十个微秒量级,适用于多燃烧室液态火箭发动机的同步点火。
In order to study the liquid fuel-based detonation wave ignition technology, a series of liquid kerosene / oxygen detonation wave ignition experiments were carried out. In the experiment, the supply pressure of oxygen and kerosene were 1.0 MPa and 0.7 MPa respectively, and the spark ignition energy was 50 mJ. The basic characteristics of two-phase detonation wave ignition technology are studied. The experimental results show that the detonation wave can be quickly generated with low ignition energy. The detonation pressure of kerosene / oxygen can reach 4.0 MPa and the detonation wave velocity can reach 1500 m / s. m / s, tail flame temperature of about 2075 K. The experiment of two-phase detonation wave propagating from single tube to multi-tube was carried out. The feasibility of two-phase detonation wave multi-tube ignition technology was verified. At present, four-tube synchronous ignition can be realized. Experiments show that the two-phase detonation wave ignition technology has strong repeatability and multi-tube ignition has good synchronism, the time difference is in the order of tens of microseconds and is suitable for simultaneous ignition of a liquid rocket engine with multiple combustors.