The particularity of the altitude simulated test of an engine with Laval nozzle was analyzed in brief. The engine thrust determination and correction in altitude test with large deviation of simulated ambient pressure was put forward.

• 简析了拉瓦尔喷管发动机高空模拟试验的特殊性,提出了大模拟偏差条件下确定和修正拉瓦尔喷管发动机推力的方法。