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阿里安火箭第18次飞行事故原因已在7月2日事故调查委员会向欧洲航天局递交的调查报告中给以定论。调查委员会的专家们肯定,这次发动机上使用的组合件没有什么问题。近来两次事故(指V15、V18飞行故障一译注)都出现在发动机点火程序期间。这次点火器在燃烧室内产生“压力峰”前显然是起作用的。“压力峰”是由点火时推进剂混合不好引起的。“压力峰”不正常地上升,由推进剂管路内的气穴使发动机熄火。
The reason for the 18th flight accident of Alian Rocket has been finalized in the investigation report submitted to the European Space Agency by the Accident Investigation Commission on July 2. The commission’s experts affirmed that there was no problem with the assembly used on the engine. Two recent incidents (referring to V15, V18 a flight failure) appear in the engine ignition process. This time the igniter in the combustion chamber before the “pressure peak” apparently play a role. The “pressure peak” is caused by a poor mixture of propellants on ignition. The “pressure peak” is not normally raised and the engine is stopped by the air pockets in the propellant line.