Technology: breaking the hegemony that monopolizes the world

"You may not know that the orbital resources in the outer space of the blue star are already scarce resources, because the orbits are fixed routes, so after the number of spacecraft and satellites on the same orbit increases, this orbit cannot continue to enter new spaceflights. spacecraft, satellites, and prevent dangerous events such as congestion and collision of spacecraft in orbit.

After installing the attitude engine, our spacecraft will not deviate from the orbit, and even if there is an error, it can be quickly corrected back to the orbit. "

During the explanation by chief engineer Li Jian, the director also released the orbit diagram of the Kyushu spacecraft at the right time, just like a hula hoop route around the blue star, a dog-head-shaped mark is slowly advancing on the orbit line, and Under it is Blue Star.

"There are many types of attitude control engines for spacecraft and satellites, but they are all based on three working methods.

The most basic technology is cold gas propulsion. The spacecraft is equipped with a gas cylinder filled with inert gas, and the attitude control is realized through the reaction force generated when the gas expands and accelerates the ejection. The initial technical difficulty is low and the cost is low, but the controllability is not good. Small. Of course, this technology currently also has an advanced system, that is, the Weox-class variable-thrust air-conditioning propulsion system, which allows satellites to achieve an 'ultra-quiet and ultra-stable' state and detect gravitational waves.

The second type is the most common and widely used chemical energy propellant device. You can understand it as a small rocket, whether it is scientific research satellites in the last century or today's commercial meteorological, communication and commercial satellites. The propulsion unit's attitude engine.

The third type of ion propulsion is to heat and ionize the liquid fuel first, and then use the electromagnetic coil to accelerate the ejection of ions to form thrust. The specific impulse of this propulsion system is very excellent, which can easily reach more than ten times that of other common fuels, such as NASA’s new The technology is used in the development of xenon ion thrusters and in the GOCE satellite known as 'Space Ferrari'.

However, this technology requires a high threshold, and although the specific impulse is excellent, it is limited by the unit power, and the thrust generated by it is only tens of millinewtons. With this system, if the spacecraft wants to change orbit, the time it takes can be measured in months. Remember, so it can only be used as a power system for attitude control, which can be fine-tuned but cannot be changed at will.

Although our Tiangong space station in Daxia also uses ion thrusters to control the attitude of the spacecraft, but the Tiangong space station uses a more advanced Hall thruster, the thrust is much greater than ordinary ion thrusters, so it can control the Tiangong space station Emergency avoidance in a short time.

With the continuous advancement of aerospace projects, Kyushu Technology is also making great strides in the propulsion system, not only in the research and development of traditional chemical energy working fluid propulsion devices and air-conditioning propulsion, but also in the development of electric and ion propulsion systems.

Of course, due to our company's rapid progress in the field of materials, solid-state energy batteries have enabled our electric propulsion system to develop rapidly. After being equipped with flexible folding solar wing panels, our solid-state energy can be used in conjunction with the 'infinite array propulsion engine' to achieve short-term The internal output is relatively objective propulsion, and the orbit of the spacecraft is adjusted. "

Following Li Jian's science popularization, the popularity of Kyushu Airlines' live broadcast room has picked up, but what triggered a new round of barrage boom was the emergence of a phenomenon.

Some viewers found that on the orbit of the Kyushu Science and Technology spacecraft, there were suddenly three more flashing light spots that were moving towards the spacecraft. If you look at the schematic diagram of the live broadcast room, these three light spots will disappear soon. will hit the spacecraft.

Some viewers hurriedly launched a barrage.

"Hold the grass? Boss, stop lecturing, and look at the uninvited guest on the screen!"

"The second dog is still sleeping, can it wake up and fly the aircraft?"

"Has anyone noticed that there are three small red dots on the screen? There was no such thing just now. Could it be that I misread it?"

"As we all know, the red light spot is the target signal. If this is in the game, it is likely to be the point guided by the boss."

Seeing these dense barrages, in the live broadcast, the expression of chief engineer Li Jian also became serious at the same time.

Although there is a delay of a few minutes, when the live viewers and technicians see the same special situation, they all have their own most intuitive performance.

At Li Jian's request, the director did not cut out the follow-up command dialogue, but only silenced the technical parameters of some key commands.

As a result, netizens in the live broadcast room saw the real version of the "news live broadcast".

In the screen of the live broadcast room, Li Jian, the chief engineer of Kyushu Science and Technology Aerospace Project, who was still lecturing, said in a calm voice: "This is SpaceX's Starlink satellite, why did it suddenly switch to the orbital altitude where our spacecraft is located? SpaceX responded urgently to this situation, stating that we have been allowed to use this orbit before, and that this orbit is not the working orbit of these three satellites, allowing SpaceX to guide the satellites to avoid our spacecraft.

Prepare to launch the attitude adjustment engine for orbital migration. "

In the voiceover, the netizens in the live broadcast room felt much more at ease when they heard the chief engineer's orderly arrangements.

But rest assured, everyone is still a little more speechless about the unruly behavior of SpaceX Starlink satellites.

It didn't take long for netizens to hear the voice of a staff member of Kyushu Technology.

"SpaceX, a space exploration technology company, said that Starlink has experienced a minor failure, and is now investigating the source of the failure, and is expected to update the system patch in three hours.

At the same time, their engineers gave a prediction that it may be due to the geomagnetic storm triggered by the solar flare activity some time ago. The magnetic field of the blue star blocked the energy of the solar storm in the upper atmosphere and heated it, causing the atmosphere to expand and become denser, which damaged some communication electronics.

Regarding the three out-of-control satellites, they said that they are currently unable to control these three satellites. If these three satellites cause damage to our spacecraft, they express their concern and apology, and will let the insurance bear part of the loss.

Under our questioning, they told us that the insurance amount would be one million dollars. "

a million dollars?

Hearing this number, not to mention the staff and engineers, Blue Star's netizens laughed angrily.

"One million dollars? SpaceX to send beggars? Kyushu Technology is short of such a little money?"

"Laughing to death, Mr. Gu wakes up every day, the amount of money in the company's account is uncountable, what's the use of a million dollars?"

"Jiuzhou Science and Technology spent hundreds of millions of dollars to develop and manufacture this equipment. I don't know if Jiuzhou Technology has bought insurance for the spacecraft."

"Buy insurance for experimental spacecraft? You are an insurance company. If you dare to open this business today, you will go bankrupt tomorrow. Believe it or not?"