高燃速烟火型做功器件燃烧特性研究

为了研究高燃速做功器件内部燃烧波传播速度的变化规律和燃烧特性,保证该器件作用迅速、稳定,采用光导纤维测速法,对烟火型短脉冲推冲做功装置点火-燃烧过程的传火速度以及不同密度下推冲器的稳定燃速进行测试.结果表明:其燃烧过程具有非平行层燃烧的特性,沿燃烧波传播方向,推进剂燃烧存在不同特征的3个区域,平行层燃烧区,过渡燃烧区以及稳定对流区;装药密度为1.45 g·cm~(-3)时,推冲器的稳定燃速达到最大.

Combustion Characteristics of Thruster with High Burning Rate Pyrotechnics

In order to study the regulation of burning rate and combustion characteristics in high burning rate work device, and ensure the thrust output stability of the device, a burning rate test by optical fiber was introduced and the ignition-combustion rate of pyrotechnic short-pulse propelling work device was tested. Results show that the combustion process has a non-parallel layer burning characteristic, and the distributions of burning rate exist in three different diagnostic burning zones (the parallel layer combustion zone, the transition combustion zone and the stable convection zone) along the burning direction, the stable burning rate of the propelling device reaches the maximum when the charge density is 1.45 g·cm^-3.