Driver Gas Reduction Effect of Pulse-Detonation-Engine Initiator Using Reflecting Board
Driver Gas Reduction Effect of Pulse-Detonation-Engine Initiator Using Reflecting Board
复制标题
DOI：
10.2514/1.50043
复制
发表时间：
2011
影响因子：
1.9
通讯作者：
M. Wakita;R. Numakura;Takatoshi Asada;Masayoshi Tamura;T. Totani;H. Nagata
中科院分区：
文献类型：
--
作者：
M. Wakita;R. Numakura;Takatoshi Asada;Masayoshi Tamura;T. Totani;H. Nagata
为了减少脉冲爆震发动机吸气工作时驱动气体的使用，本文研究了一种反射板与驱动气体过充相结合的方法。该方法有可能将预雷管直径减小一半，并缩短到反射板位置w的过填充距离h。分别以化学计量氢-氧和氢-空气混合物为驱动气体和靶气体进行实验，结果表明，当使用反射板间隙为w10 mm的反射板时，使平面爆震波在爆轰室内传播所需的过填充距离缩短到30 mm。当过充距为30 mm时，由于驱动气体和靶气体在反射板周围的混合作用，没有发生爆震波由圆柱形向环形的转变。100毫米厚的反射板防止了混合效应，并且可以在过填充距离小至17.2毫米的情况下成功地从圆柱形转变为环形。
To reduce driver gas usage of a pulse detonation engine operating in airbreathing mode, the authors experimentally examined a combination method of a reflecting board and overfilling of the driver gas. This method has the potential to reduce the predetonator diameter by half and shorten the overfilling distance h to the reflecting board position w. Experiments with stoichiometric hydrogen–oxygen and hydrogen–air mixtures as driver and target gases, respectively, showed that the overfilling distance necessary to have a planar detonation wave propagate in a detonation chamber is reduced to 30 mm when a reflecting board is used with a reflecting board clearance of w 10 mm. With an overfilling distance of 30 mm, the transformation of the detonation wave from cylindrical to toroidal did not occur because of the mixing effect of the driver gas and the target gas around the reflecting board. A 100-mm-thick reflecting board prevents the mixing effect, and a successful transformation from cylindrical to toroidal becomes possible with an overfilling distance as small as 17.2 mm.