最近,我国探月工程三期再入返回飞行试验器的服务舱完成了第三阶段拓展试验。为此,本刊通讯员和记者对探月工程副总指挥、国防科工局探月与航天工程中心主任刘继忠进行了专访。记者:嫦娥-5试验器的服务舱已完成了第三阶段拓展试验,这三个阶段的拓展试验有哪些主要内容?刘继忠:第一阶段主要是试验服务舱拉起、大椭圆停泊轨道飞行、地月L2点飞行及返同月球的过程。它实现了一次发射、三次奔月、两次借助月球引力飞行。在两次月球借力飞行中,第一次是借助月球引力转向,形成自由返回轨道,将返回器送回地球;第二次是借助月球引力飞向地月L2 Recently, China’s lunar exploration project three back into the flight test unit service completed the third phase of the expansion test. To this end, correspondents and correspondents of the magazine on the lunar exploration vice president, National Defense Science and Technology Bureau lunar exploration and space project director Liu Jizhong conducted an interview. Reporter: Chang’e-5 tester service module has completed the third phase of the expansion test, the three stages of the expansion test What are the main content? Liu Jizhong: The first phase is mainly the trial service cabin pulled up, orbiting large oval flight, Moon L2 flight and return to the moon’s process. It achieved a launch, three flies and two lunar gravitational flights. In the two lunar leveraging flight, the first is by means of lunar gravity steering, the formation of free return orbit, the return to Earth; the second is to use the moon’s gravity to fly to the moon L2