In the global scope, China's aerospace strength can be said to be relatively strong, although it has been continuously blocked by Western countries, but China's scientific researchers have not given up, independent, teamwork, etc., and finally out of their own route, from China's Beidou navigation system, to China's lunar exploration project, and then to China's Mars exploration project, etc., are completed at one time, which is much stronger than many countries in the world.
Including the space station project we are building, the continuous launch of Shenzhou manned spacecraft, etc., all of which have allowed the world to see the rise of China's space technology, which can still be achieved without the help of other countries. Seeing the rise of China's space technology, other countries in the world are also gradually taking "China as an example" to develop space programs. Therefore, we are all looking forward to cooperating with China. For example, during the construction of the Chinese space station, 17 countries such as Japan and India have joined the Chinese space station, hoping to use the Chinese space station for related project experiments in the future.
Of course, in the first batch of projects, the United States was completely rejected, because the American project did not meet the standards. Of course, this is not a "counterattack" by our country against the United States, our space station has its own set of standards, certainly can not be "broken" at will, so only wait for the later US projects to meet the standards, we will then conduct a correlation evaluation to see if it is in line. At a time when the Chinese space station was hotly discussed, South Korea in the Asian region also carried out a lift-off launch, which was launched at the Jeolla Nam dora Old Space Center in South Korea.
Unfortunately, however, the rocket failed to send the payload into a predetermined orbit, and the launch mission of South Korea's first self-developed rocket ended in failure. So, it's also a shame. However, despite the failure, South Korea is still very happy, because the high-profile statement that "the Korean space age is coming", and it will not be long before we can accurately launch it into the target orbit. This launch vehicle is said to be strong and strong, not strong or strong, the key is that experts have made a comparison, which has aroused heated discussion among everyone. How do you compare it? Let's take a look at the situation.
As we all know, China's most used is the Long March carrier rocket, and the Long March carrier rocket made in China is still relatively early, the rocket was launched in 1965, in 1970, the first launch, and successfully sent Dongfanghong I into orbit, it has been 51 years, that is, because the independently developed rocket was successfully launched, making China the world's 5th self-developed space power to launch artificial satellites, of course, this rocket has been decommissioned, at most we can look at a model.
The overall layout of the rocket is divided into three levels, adopting a tandem layout, from the tail of the arrow to the top of the arrow, which is one substation, two substations and fairing (including three substations).
A sub-structure consists of a "shell-rod system" interstage, an oxidizer tank, an inter-bin section, a fuel tank and its subsequent transition section, and a tail section.
The second sub-structure consists of an instrument chamber, a storage tank and a tail segment. The instrument chamber is a tapered semi-hard shell structure with a beam supporting the inertial instrument base.
The three-stage structure consists of an instrument bracket and an adapter cone, with an instrument bracket height of 0.49 meters and a bottom diameter of 0.77 meters.
This is its public situation, the entire rocket is 29.86 meters long, the take-off mass is 81.57 tons, and the carrying capacity is 300 kg. The South Korean carrier rocket NURI is a comparison between experts and the Long March 1. According to the publicly available parameters, the NURI rocket is 47.2 meters long, weighs 200 tons, and has an orbital carrying capacity of 1.5 tons at 600-800 kilometers, powered by liquid fuel boosters. Indeed, from the perspective of data parameters, it is indeed much stronger than China's Long March 1 51 years ago.
There is really nothing wrong with the judgment of aerospace expert Huang Zhicheng. However, if we want to say that compared with the Long March II carrier rocket developed by China in the 1970s, the overall performance is much worse. The Long March 2 carrier rocket is a two-stage carrier rocket that can send a 2.4-ton payload to a low-Earth orbit of 200 to 400 kilometers. The three stages of South Korea's "World" all use liquid oxygen/kerosene engines, and the engine does not use high-pressure refueling technology at all, so there is a gap.
Say goodbye, this is a difference seen on the engine, but then again, south Korea can use liquid oxygen/kerosene engines to send it into space, which means that a breakthrough in this technology may also be being studied. However, according to experts, mastering this engine technology takes a long time, often taking more than 15 years, and South Korea may not have had this experience to conduct research.
After all, South Korea's rocket launch hits are really too big. The previously studied carrier rocket "Luo Lao" was also successful after two failed launches, so it is indeed not easy. Could it be that The Solita also needs two failed launches to succeed? Of course, this judgment is not known whether it is right or wrong, and it is only understood when it is launched.
And what is the reason for the failure of the launch of South Korea's first self-developed rocket? In fact, it is considered to be mostly successful, the "World" carrier rocket normally completed all the flight procedures, and successfully delivered the 1.5-ton test satellite to the 700 km high sun-synchronous orbit, but because the satellite did not reach the predetermined speed and failed to successfully enter the orbit, it was finally determined that in order to "fail", only this process failed, and the others were successful.
So, that's why South Korea publicly stated after the launch that "the second time will definitely succeed," and only a small percentage of them didn't succeed. Of course, people who have not mastered this technology do not have the strength to comment, after all, we do not know whether it will succeed, mechanized things have room for change, this is inevitable, the second time can not succeed, only after the launch to know, this is the general situation.
So on the whole, South Korea's space technology has actually mastered a part, although this time it failed, but the "Luo Lao" was also successful. The overall evaluation of South Korea's launch can also be regarded as "although the defeat is still glorious", it can also be regarded as the rise of space technology.