In order to ensure the high reliability and safety of the rocket, the rocket electrical system has nearly 40 thousand components. All components have been screened and more than 40 rounds of growth tests have been carried out. It is not only necessary to achieve the design target in the simulated flight environment, but also to have margin on this basis. For example, it's only 600 seconds from the launch of the rocket to the launch of the spacecraft, but the reliability growth test of the rocket has reached 546 hours. In this way, the reliability index of the long march 2F rocket reaches 0. 97, which means that there are only three problems in launching 100 rockets. At the same time, the safety index of the rocket reaches 0. 997, which means that only three rescue measures taken for 1000 failures are unsuccessful.
总之,长二F型火箭是我国设计制造的世界最先进的运载火箭之一。
In short, the long 2F rocket is one of the most advanced launch vehicles in the world designed and manufactured in China.
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