A video was circulated on the Internet, and a netizen in Taiyuan captured a magical scene. A rocket pierced the sky at an extraordinary speed, and its flight trajectory was quite special, and it seemed that it had undergone a second ignition.

A video circulated on the Internet, and a netizen in Taiyuan took a magical scene. A rocket pierced the sky at an extraordinary speed, and its flight trajectory was quite special, and it seemed that it had undergone a second ignition. Regarding this magical celestial image, some netizens speculated that it might be an hypersonic weapon test. The basis for the speculation was that a few seconds later in the video looked like a direct secondary ignition of the aspirated scramjet engine. According to the current relevant situation of such rocket tests in the international world, the flight speed may exceed Mach 15.

Combined with the current development of relevant global technologies, hypersonic weapons generally have three development ideas, namely, water drifting, double cone and ultra-combustible aspiration configuration. Each of these three designs has its own advantages. Based on the video posted on a Weibo post in Shijiazhuang on the evening of September 26, the blogger photographed yellow lines in the sky, which seemed to be a kind of aircraft rising and then descending. Netizens have speculated about what aircraft it is.

Judging from the video posted by netizens in Shijiazhuang, the prospect of the video is that there is a building, which seems to be GF Bank . Then, based on the position of the sun in the video and the state of the sunset, it is found that it may be in the northwest, but not particularly in the northwest. Some netizens left a message on this Weibo post, saying that this is an aircraft that occurred in Taiyuan Satellite Launch Center . If we look at the location, the northwest direction of Shijiazhuang may indeed be the Taiyuan launch center. Some enthusiastic netizens also checked the distance between Taiyuan and Shijiazhuang, which was 256 kilometers, and the viewing angle of the video may not exceed 10 degrees. So enthusiastic netizens used these basic numbers to calculate it in the trigonometric function, and concluded that the height of the flying object will not exceed 46 kilometers. Considering the curvature of the earth, it may be a little higher, not exceeding 50 kilometers.

So netizens came up with speculation that the aircraft's possible fixed-point altitude is about 35 kilometers and the launch location may be in Taiyuan. As for which aircraft it is, there are many different opinions. Some people say it is launching satellite , some people say it is launching ballistic missile , and some people think it is an anti-missile interception and hypersonic weapon. In this regard, some netizens with physics knowledge believe that launching satellites is unlikely and the possibility of ballistic missiles is also very small. If satellites are launched in mid-latitude areas, their orbits are generally towards the southeast or southwest, which is different from the state in the video. And from a height, it is unlikely that the launch vehicle, , will be sent to the satellite to the sky.

Therefore, netizens proposed a way to calculate the highest point of the ballistic by multiplying 0.25 by the range. If calculated in this way, the range of this missile is only 180 kilometers at most, which is unlikely to be a ballistic missile. Many cruise missile are farther than this. If it is a mid-level interception, the interception height is generally over 100 meters. Therefore, netizens believe that conducting an interception test at a height that is too low is actually of little significance. When used in actual use, the altitude of 30 to 40 kilometers is actually impossible to stop anything.

So netizens are more inclined to be testing a new type of hypersonic missile and use ram engine . This kind of test does not require flying very high, because it mainly tests engine performance. Some netizens have also listed the types of such engines in the world, including roughly three types: turbo-based + super-combustion scram, rocket + super-combustion scram, and turbo-based + rocket + super-combustion scram. But it is not ruled out that it is pulsed knock engines, which are of great research value. Previously, the Pentagon publicly admitted that it was behind China and Russia in the field of hypersonics, but also said that the gap could be made up in about five years. Judging from this Taiyuan experiment, China is at least 20 years ahead of the United States.