用铜柱测压器初步测定固体火箭发动机的燃烧稳定性

A STUDY ON MEASUREMENT OF COMBUSTION STABILITY IN SOLID ROCKET MOTORS WITH COPPER POST GAUGE

关键词:  固体推进剂火箭发动机  燃烧稳定性  压力测量  压力仪表

Key words:  Solid propellant rocket engine  Combustion stability  Pressure measurement  Pressure instrument

摘要:

通过对产生振荡燃烧发动机的动态压强测量与铜柱测压器测量结果相对比，并用“Ｔ”形燃烧器做了实验验证，证明振荡压强能够使铜柱的塑性变形量增大。因此，用钢柱测压器测出的压强值与稳态压强电测系统测出的最大压强相比较，可以初步断定固体火箭发动机是否存在振荡燃烧现象。

Abstract:

s compared measurement results of dynamic pressure with those by copper post gauge in a solid rocket motor burning oscillatedly, it is shown that the oscillatory pressure enhances the plastic deformation of the copper post, which has been verified in a T-shaped combustor. The oscillatory combustion in solid rocket engines can be determined by comparing the pressure measured with copper post gauge to the maximum pressure measured with static electrical measurement system.