Why is the ＂Long March 5＂ rocket so important to China?

Source: Voice of Germany

Prior to the quot; Long March 5 quot; Prior to, the rocket with the strongest carrier capacity in China was QUOT; Long March 7 quot; and could send about 14 tons of load into a near -ground track.This data has obvious gaps with the big thrust rockets in the United States, Russia, Europe, and Japan.The theoretically, the long march 5th quot; theoretically, it has a near -ground rail load launch capacity of at least 25 tons, which is nearly doubled compared with the past, and it can greatly reduce the gap with the world's leading level.

Quot; Long March 5 quot; The value of Chinese aerospace is not only reflected in competing with paper data from the United States and Russia.Whether it is China's next stage of lunar exploration project, manned space engineering, or ambitious Mars detection plan, it is urgent to launch the carrier rocket.For example, the aimed to realize the quot; and the quot; Chang'e 5 quot; plan to return to the earth's goal, the detector weighs 8 tons;Send the moon.The core compartment of the Chinese Space Station weighing 20 tons can only be sent to the near -ground orbit.The quot; Firefly 2 QUOT; Mars probe is scheduled to be launched in the summer of 2020, which also depends on QUOT; Long March 5 quot;.In addition, aimed at replacing Quot; Shenzhou Quot; series of Chinese new -generation manned spacecraft and space telescopes in the series are also waiting for carrier rockets with enough thrust.

Multiple Chinese aerospace projects are forced to postpone it because of QUOT; Long March 5 quot;

However, the quot; Long March 5 quot;The first test of the rocket in 2016, there was a failure of the secondary engine shutdown in advance, although the burning time of the above -class engine was successfully successfully sent;Orbit, but this remedy will shorten the service life of satellites.In 2017, the second launch of QUOT; Long March 5 quot;

Since then, the Chinese aerospace industry has begun to rectify this new large thrust rocket, trying to find out the cause of the fault.During this time, the official agency only released a small amount of relevant information, such as quot; failure to find Quot;, quot; hydrogen and oxygen engine re -test Quot; and so on.In Chinese social media such as Weibo and Zhihu, occasionally some people in the industry have revealed that improving work is not smooth.Until this fall, China officially announced that Quot; Long March 5 quot; will be quot; select the opportunity to launch Quot;.

Due to the extension of the carrier rocket engineering, one of the space stations and lunar exploration plans has also been postponed.At present, the launch date of Quot; Chang'e 5 quot;, quot; China Space Station's core compartment Quot; has been postponed to 2020 and 2021.What is even more embarrassing is that the Chinese Martian detection plan: quot; Firefly 2 Quot; Once the launch window in the summer of 2020 is missed, it must wait for another 26 months.

It should be pointed out that although the long march 5 quot; although the carrier rocket has caught up with the international leading echelon in total thrust, its technology itself is not advanced, and it has reached the level of the United States, Russia, and Europe ten years ago.The hydrogen and oxygen engine used only solves the problem of Quot; and Quot; and QUOT; without quot;, its performance also has a significant gap with the United States, Russia, and Europe.

The big thrust rockets in the United States, Russia, and Europe also suffered many failures during the early test shooting.