The leisure time is long, and when you are busy, time suddenly becomes like flowing water and slips away quietly without realizing it.

More than half a month passed in a blink of an eye. During the Qingquan Technology Supplier Conference was held in a vigorous manner. All forces divided up most of Qingquan Technology's supplier quotas, and a few lucky small companies also obtained the coveted contracts with their solid technical forces.

Liu Qingquan was too busy and did not attend the supplier conference. The big thing had been decided, and there was no need for him to come forward for the rest. He had been immersed in the laboratory during this period.

With an increasingly large team, he is gradually conquering the technical difficulties in the Rockets. Fortunately, he has practiced the Yuanli method specially developed for scientific researchers, and Qingquan Technology's R&D capabilities are extremely strong.

In addition, Liu Qingquan is willing to invest in various materials, equipment, funds, etc., so it is easy to do things if you have money! Many things can be bought with money.

Of course, Rockets cannot be achieved by having money, let alone design everything yourself. Many times the problems encountered are enough for the entire research institute to have a headache. Of course, at this time, Liu Qingquan will go to the seed space to find help, and countless problems are conquered one by one with everyone's concerted efforts.

On January 15, 2022, Liuyun Town is the best time of the year, with clear weather and comfortable climate. Today is a good day without wind and a good day for rocket experiments.

Liuyun Town is a remote place called Wild Boar Ridge. There is nothing else in a few miles apart from the wild boars that are humming on the mountain. Early Qingquan Technology people have already built a rocket launch site here. Of course, compared with the country's Jiuquan, the Xichang Satellite Launch Center is simply incomparable. Here, it simply built a wide road to a small highland.

The top of the mountain was pushed early, and the hills that were originally dozens of meters high were pushed to a height of only more than 10 meters. In addition to the flat ground, the entire site area was more than 10,000 square meters.

There are many other buildings built next to the site here. On the mountain not far away, some newly built quantum communication stations, 3D three-dimensional radar stations, radio astronomical telescopes, etc. stand quietly.

In the middle of the huge high-standard cement site is a launching platform. Outside the site is a two-story command center, filled with various equipment, and even black technology equipment created by Liu Qingquan based on Alpha Technology.

"For a few late-night snacks, Zhou Jingbo and others are also working hard enough! They stay up late to work overtime every day, but they didn't expect to find a perfect finished product in half a month." Liu Qingquan smiled and looked at the quantum communication equipment in his hand. It was no different from the appearance of ordinary equipment, but the technology involved was several times different.

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

"The rocket setup team is ready!"

"The radar is ready!"

“Communication is normal!”

“No one in the middle of the venue, normal!”

...

"Preparation for the 9th Rocket Experiment" Liu Qingquan looked at the Rockets in the middle of the field. Well, this cannot be regarded as a Rocket, because the Rockets are really different from the Rockets that everyone remembers.

Compared with traditional rockets that are more than 40 meters tall and 3-5 meters in diameter, the rocket designed by Qingquan Technology and others is really a dwarf winter melon, which is only more than 4 meters tall and has a diameter of 2 meters at the bottom. Then it continues to gain weight, and the diameter reaches more than 3 meters in the middle. Then it gradually becomes thinner and leans against a conical head.

Of course, this rocket is just an experimental product, because it looks so much like a fat man with a big belly. It was named "Fatty Man No. 9" by Qingquan Technology, a group of imaginative people.

The "Fatty" series of rockets were developed by Qingquan Technology and others. They were later prepared to launch satellites. So far, they have been experimented 8 times. This is the 9th experiment.

The fairing of the "Fatty" Rocket uses a new material developed and designed by the New Materials Company under Qingquan Technology. It is a semi-hard shell aluminum alloy material. It has light overall weight, heat insulation and high temperature resistance, and the penetration of communication signals is very good, which can ensure the connection between the ground and the rocket.

The shell material of "Fatty" is also a specially developed alloy material. It is lightweight, has high hardness, is heat-resistant, and has poor cooling and shrinkage performance. It will not cause too much thermal expansion and contraction due to severe changes in temperature.

As a test subject, there are naturally no satellites inside the "Fatty" and the instrument cabin on the top only contains some key equipment, communication equipment, electronic control equipment, gyroscopes, detectors... and so on.

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

Of course, although hydrogen and oxygen combustion can produce huge heat value, it has very high requirements for hydrogen and oxygen purity, almost reaching 100%. Qingquan Technology's previous experiments were because of the unstable purity, causing combustion instability and huge explosions.

Fortunately, Qingquan Technology's fat man is an experimental product. Moreover, because it has an anti-gravity engine design and a first-level overall design, the fuel inside is not much. Moreover, Qingquan Technology has also made comprehensive preparations, so it did not cause any major losses, but just set off a large firework.

Speaking of the previous 8 experiments, three times were because the fuel purity was not up to standard and the combustion was unstable. There was an explosion when it was not much to take off. Two times were flying into the sky because of the internal bracket problem. Fireworks were set off five consecutive times. After the next three times, the fireworks were finally not set off. They were able to take off smoothly and reach the predetermined design speed and height. However, the falling speed was not controlled during the return and recycling process, and the entire "fat man" fell into pieces.

"Everyone is here, the countdown to launch! 10!9!….3!2!1! Launch!" As Liu Qingquan said the word "launched", the staff members who had already prepared a long time ago gently pressed the red launch button.

On the launching platform in the middle of the venue, a circle of heat waves erupted instantly, and red flames emerged from the bottom of the "fat man", and then the "fat man" slowly started to take off.

As the flame slowly turns from orange to red and then turns into scorching white, the fat rocket is getting faster and faster, and the fairing on the top puts a Buddha bullet, cutting the thick air to form a beautiful cyclone.

The rocket's bottom is a long white tail flame, which is more than ten meters long, and the high temperature is as high as 4,000 degrees Celsius. Since the rocket's tail is close to the root of the flame, it must be low. It uses metal cermet composite materials, mixing the ceramic powder and the metal powder evenly, and then sintering at high temperatures to make the metal cermet. It is both hard and tough, with low density and high temperature resistance.

Looking at the rocket that had gradually disappeared from sight, Liu Qingquan turned over and looked at the huge monitor next to him. The data columns of the rockets on it were very detailed and are being updated at any time.

The altitude is 20,000 meters, the speed is 30 Mach, which is 10.2 kilometers/s, exceeding the first cosmic speed of 7.9 kilometers/s, and the speed is still accelerating. The internal temperature of the rocket is normal, the outer shell temperature is 2,000 degrees Celsius, and the fuel remains 80%.... The data are constantly changing, and the comprehensive status display is always green, which means that all the data are very perfect.

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

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

"Radar team report on the situation" Liu Qingquan continued to ask.

"The situation is normal, you can track it normally"

...

Soon, the fat rocket flew out of the stratosphere and came to the upper atmosphere. At this time, as long as you continue to fly into outer space, you can quickly reach the altitude of low-altitude satellite launch.

However, today's Fatty No. 9 is a test subject and is not ready to fly to outer space. At this altitude, the test will be considered successful, if it is just used as a disposable rocket.

Qingquan Technology wants recyclable rockets, so naturally there are more difficult considerations behind it. Launching can only be considered half of the success, and the remaining half, the recovery of rockets intact is the real problem.

"The Rockets return, please pay attention to all teams." Liu Qingquan ordered the Rockets to return after watching the Rockets reach the predetermined altitude.

When launched, you must get rid of gravity and consume a lot of fuel. This way, you can turn off the reaction motor and use gravity to attract the rocket.

I saw the fat man's head facing downwards, emitting a Buddha meteor, and quickly descending downwards, bringing up a long flame. At this time, it is actually quite dangerous, because if the control is inaccurate, a comet will come to install the earth, causing huge damage to the bottom, and the loss will be unimaginable.

Fortunately, the fat man was controlled very accurately. When he dropped to a height of 10,000 meters, the two engines were reignited and started. With the work of the anti-gravity engine, the fat man's falling speed instantly decreased, and then the falling speed soon slowed down.

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

This step can be said to be the most critical step for recyclable rockets. The key to success and failure is to see if the rocket can change direction and turn the tail down, because only the tail downwards can rely on the jet engine to slowly reduce the drop speed and ultimately achieve safe retraction.

"Fatty No. 9" is facing upward, and under the work of both the anti-gravity engine and the jet engine, the height is gradually reduced. At the same time, the landing direction is constantly adjusted through the tail wing according to the fat man's position.

Soon, the fat man reappeared in everyone's sight. Over the field, Fat Man No. 9 slowly aimed at the launch pad and landed slowly. The flames at the tail slowly turned from white to orange. Then the fat man slowly landed on the launch pad and all the engines were turned off.
Chapter completed!