4月20日19时41分,搭载我国首艘货运飞船天舟一号的长征七号遥二运载火箭,在海南文昌航天发射场点火发射,约596秒后,飞船与火箭成功分离,进入预定轨道,发射取得圆满成功。这是长征系列运载火箭的第247次飞行,也是我国载人航天工程“三步走”发展战略第二步的收官之作,标志着我国即将开启空间站时代。这是天舟货运飞船和长征七号运载火箭组成的空间站货物运输系统的首次飞行试验。飞船入轨后,将按预定程序 At 19:41 on April 20, carrying the Long March No.7 Launch Vehicle of the Long March, one of the first cargo spacecraft Tianzhou-1, was fired at the Wenchang Space Launch Site in Hainan Province. After about 596 seconds, the spacecraft was successfully separated from the rocket and entered into a scheduled Orbit, launch made a success. This is the 247th flight of the Long March series carrier rocket and the final conclusion of the second step of the development strategy of manned space project “Three Steps” in our country, which marks the forthcoming opening of the space station era in our country. This is the first flight test of the space station cargo transport system consisting of the Skyboat spacecraft and the Long March VII launch vehicle. After the spacecraft enters the orbit, it will be scheduled according to schedule