研究固体火箭发动机不稳定燃烧问题的必要性与工程方法

AN ENGINEERING METHOD AND ITS NECESSITY IN STUDY ON COMBUSTION INSTABILITY OF SOLID ROCKET MOTOR

关键词:  固体推进剂火箭发动机  燃烧稳定性  振荡燃烧  工程评价试验

Key words:  Solid propellant rocket engine  Combustion stability  Vibrationalcombustion  Engineering evaluation test

摘要:

对二台发动机三次地面静止试验结果进行了诊断，确认存在纵向中频声不稳定燃烧。简要地回顾了固体火箭发动机不稳定燃烧问题的历史，同时从机理出发指出不稳定燃烧具有“多发性”、“随机性”的原因。从而，结合其产生的危害性提出了对其研究的必要性。提出了研究这一问题的最基本的工程方法。

Abstract:

The combustion instabilities of two solid rocket motors three firingtests are diagnosed. All of the tests exhibit mid-frequency longitudinal mode instability. The history of study on combustion instability problem of SRM is briefly reviewed. It is pointed out that the reasons for " multiple" and " randomll characteristies of the instability and the necessity of study on the instability’ An engineeringmethod of study on instability is also proposed.