Abstract: In this paher, the behaviors of flexible and rigid thrust stand used in wind tunnel test are introduced. Impossibility for the flexible thrust stand to obtain high measurement accuracy is discussed, but it is not the situation in a rig test. Some differences are caused by different working medium used in the tests.

Key words: Nozzle;Test stand;Wind tunnel test

摘要： 本文介绍了柔性推力架和刚性推力架在喷管风洞实验中的表现.讨论了: 为什么风洞实验中使用柔性推力架达不到推力测量的精度要求?为什么试车台上用柔性推力架又是可行的.通过分析,找到了问题的根源在于风洞实验中用的是气体介质,而试车台上用的介质是液体推进剂.

关键词: 喷管;风洞;实验;试车台