The idle time is long, and when you are busy, time is like flowing water, and it slips away quietly before you know it.

In a blink of an eye, more than half a month has passed, during which the Qingquan Technology Supplier Conference was held vigorously, and all parties divided most of the supplier quotas of Qingquan Technology, and a few lucky small enterprises also obtained the coveted contract with their solid technical strength.

Liu Qingquan was too busy, he didn't go to the supplier conference, the big thing had been decided, and there was no need for him to come forward at all, he had been immersed in the laboratory during this time.

With a larger and larger team, they are overcoming the technical problems in the rocket little by little, but fortunately, they have cultivated the Yuanli method specially developed for scientific researchers, and the research and development capabilities of Qingquan Technology are extremely strong.

In addition, Liu Qingquan is willing to invest, all kinds of materials, equipment, funds, etc., and it is easy to do things with money! A lot of things can be bought for money.

Of course, it is not possible to make a rocket with money, not to mention that you have to design everything yourself, many times the problems encountered are enough for the headache of the entire research institute, of course, at this time, Liu Qingquan will go to the seed space to find help, and countless problems will be overcome one by one with the concerted efforts of everyone.

On January 15, 2022, Liuyun Town at this time is the best time of the year, the weather is clear, the climate is comfortable and pleasant, today is a good day without wind, and it is a good day to do rocket experiments.

Liuyun Town is a remote place, here is called Wild Boar Ridge, there is nothing else in a radius of a few miles except for the wild boar humming and chirping on the mountain, the early Qingquan science and technology people have built a rocket launch site here, of course, compared to the country's Jiuquan, Xichang Ah Satellite Launch Center can not be compared at all, here is just a simple construction of a wide road to a small high ground.

The top of the mountain was bulldozed early, and the hill that was originally dozens of meters high was pushed to only more than 10 meters high, and the entire site area was more than 10,000 square meters.

There are many other buildings built next to the site, and on the hill not far away, some new quantum communication radios, 3D stereo radar stations, radio astronomy telescopes, etc. stand quietly.

In the middle of the huge high-standard cement field, there is a launch pad, and outside the field are some two-story command centers, which are full of all kinds of equipment, and even black technology equipment made by Liu Qingquan according to Alfa Technology.

"For a few suppers, Zhou Jingbo and these people are also hard enough! I stayed up late and worked overtime every day, but I didn't expect to come up with a perfect finished product in half a month" Liu Qingquan smiled and looked at the quantum communication equipment in his hand, which was no different from the appearance of ordinary equipment, but the technology involved in it was several eras different.

"Each group reports on their preparations," Liu Qingquan said, picking up the walkie-talkie.

"The rocket erection team is ready!"

"Radar ready!"

"Communication is normal!"

"There is no one in the middle of the venue, normal!"

……

"Preparation for the 9th rocket experiment" Liu Qingquan looked at the rocket in the middle of the field, well~ This can't be regarded as a rocket, because this rocket is too different from the rocket in everyone's impression.

Compared with the traditional rocket as high as more than 40 meters and a diameter of 3-5 meters, the rocket designed by Qingquan Technology and others is really a small winter melon, only more than 4 meters high, with a diameter of 2 meters at the bottom, and then it continues to get fat, and the diameter reaches more than 3 meters in the middle position, and then it slowly becomes thinner, with a conical head.

Of course, this rocket is only an experimental supply, because the appearance is too much like a fat man with a big belly, and it was named "Fat Man No. 9" by a group of imaginative people of Qingquan Technology.

The "Fat Man" series of rockets, which was researched by Qingquan Science and Technology and others, were prepared to be used to launch satellites in the later stage, and so far there have been 8 experiments before and after, and this is the 9th experiment.

The fairing of the "Fat Man" rocket is a new material developed and designed by a new material company under Qingquan Technology, a semi-monocoque aluminum alloy material, which has a light overall weight, thermal insulation and high temperature resistance, and the penetration of the communication signal is very good, which can ensure the connection between the ground and the rocket.

The shell material of "Fat Man" is also a specially developed alloy material, which is lightweight, high hardness, thermal insulation and high temperature resistance, and has poor cold shrinkage performance, so it will not cause too much thermal expansion and cold contraction due to drastic changes in temperature.

As an experimental product, there is naturally no satellite inside the "fat man", and the instrument compartment on the top only puts some key equipment, communication equipment, electronic control equipment, gyroscopes, detectors... Wait a minute.

The following power system adopts a dual-engine design, an anti-gravity engine, a jet engine, the fuel is liquefied hydrogen and oxygen, the fuel density is suitable, the calorific value is high, the combustion performance is good, it can be burned quickly, stably, continuously, completely, and the combustion area is small, and the waste burned is water, which will not coke.

Of course, although hydrogen and oxygen combustion can produce huge calorific value, but it has very high requirements for the purity of hydrogen and oxygen, almost reaching 100%.

But fortunately, the fat man of Qingquan Technology is an experimental supply, and because of the anti-gravity engine design, plus it is a first-class overall design, the fuel in it is not much, and Qingquan Technology has also made comprehensive preparations, so it did not cause any major losses, but just set off a large fireworks.

Speaking of the previous 8 experiments, three times because the purity of the fuel was not up to par, the combustion was unstable, and there was an explosion not much after liftoff, and the second time was that it flew into the sky and exploded because of the problem of the internal support, and the fireworks were set off 5 times in a row, and finally no fireworks were released in the last three times, and it was able to rise smoothly and reach the speed and height of the predetermined design, but the falling speed was not well controlled in the process of returning to recovery, and the entire "fat man" fell into pieces.

"Ready, countdown to launch! 10！ 9！ …….3！ 2！ 1！ Launch! As Liu Qingquan said the word launch, the staff who had been prepared for a long time on the side gently pressed the red launch button.

On the launch pad in the middle of the field, a heat wave erupted instantly, and red flames emerged from the bottom of the "Fat Man", and then the "Fat Man" slowly started to lift off.

As the flames slowly turned from orange to red and then to scorching white, the fat man's rocket became faster and faster, and the fairing on the top was like a bullet, cutting through the thick air and forming a beautiful cyclone.

The bottom of the rocket, the long white tail flame, more than ten meters long, the high temperature produced is as high as more than 4000 degrees Celsius, the tail of the rocket is close to the root of the flame, so it is low, the use of cermet composite materials, the ceramic powder and metal powder are mixed evenly, and then sintered at high temperature, the cermet made of it is both hard and tough, and the density is small, high temperature resistance.

Looking at the rocket that had gradually disappeared from view, Liu Qingquan turned to look at the huge display next to him, the data columns of the rocket on it were very detailed and updated at any time.

The height is 20,000 meters, the speed is Mach 30, that is, 10.2 km/s, exceeding the first cosmic speed of 7.9 km/s, and the speed is still accelerating, the internal temperature of the rocket is normal, the shell temperature is 2000 degrees Celsius, and the remaining 80% of the fuel is constantly changing.

"The communication group reports on the communication situation," Liu Qingquan said, picking up the walkie-talkie.

"The quality of electromagnetic wave communication is poor, and quantum communication is normal" came from the walkie-talkie, and the smug voice of Zhou Jingbo came from the walkie-talkie.

"The radar group reported the situation," Liu Qingquan continued.

"The situation is normal, and it can be tracked normally"

……

Soon, the fat rocket flew out of the stratosphere and into the upper atmosphere, and at this time, as long as it continued to fly in outer space, it would soon reach the altitude of low-altitude satellite launches.

However, today's Fat Man 9 is an experimental product, and it is not ready to really fly into outer space at all, and the test is basically successful when it reaches this altitude, if it is only used as a one-time rocket.

Qingquan Technology wants a recyclable rocket, and naturally there are more difficult considerations in the future, and the launch can only be regarded as half of the success, and the remaining half, the intact recovery rocket is the real problem.

"The rocket is back, please pay attention to each team" Liu Qingquan watched the rocket reach the predetermined altitude and ordered the rocket to return.

The launch has to get rid of gravity, which consumes a lot of fuel, and this return can completely turn off the reaction engine and use gravity to attract the rocket.

I saw the fat man's head facing down, and he flew down like a meteor, bringing up a long fire, which was actually quite dangerous at this time, because if the control was not accurate, a comet would come to the earth, causing huge damage below, and the loss would be unimaginable.

But fortunately, the fat man was controlled very accurately, when he descended to an altitude of 10,000 meters, the two engines were re-ignited and started, and under the work of the anti-gravity engine, the speed of the fat man's fall was significantly reduced instantly, and then the speed of the fall slowed down soon.

At the same time, under the adjustment of the tail of the jet engine, the whole fat man slowly changed from head down to horizontal, and then flew sideways for a distance, and then turned his head upward, just like when he was launched.

This step can be said to be the most critical step of the recyclable rocket, the key to success and failure is to see if the rocket can change direction and face the tail down, because only with the tail down, relying on the jet engine can slowly reduce the falling speed, and finally achieve safe recovery.

"Fat No. 9" heads up, under the work of the anti-gravity engine and jet engine, the altitude is slowly reduced, and at the same time, according to the position of the fat man, through the tail wing constantly adjust the direction of landing.

Soon, the fat man reappeared in everyone's field of vision, above the field, the fat man 9 slowly aimed at the launch pad, slowly landed, the flame at the tail slowly turned from white to orange, and then the fat man slowly landed on the launch pad, and the engines were all turned off.

"yes~~~ We succeeded" Whether it was the console or the tracking platform, everyone cheered, and even Liu Qingquan was excited to dance like a child!