A big country of aerospace with black technology

After the shape design of the recoverable rocket is completed, the 1210-ton propulsion system that has been completed before is added.

If you compare a rocket to a person.

So at this moment, he already has thick and powerful legs, and a healthy and straight torso.

What is still lacking is the eyes and ears that can explore the surrounding environment clearly, and the brain that decides where the rocket is going!

The rocket's eyes and ears are actually the gauges in its navigation system.

Various types of rockets will adopt different navigation methods, such as inertial navigation, satellite navigation, starlight navigation and so on.

Generally speaking, rockets use inertial guidance, using gyroscopes and accelerometers for navigation.

A small number of satellite navigation systems will be used to assist in positioning. As for the use of relatively fixed neutron stars in the universe for navigation, it is relatively rare, and starlight guidance will only be used for planetary detection in the solar system.

But generally speaking, no matter which navigation method is adopted, various gyroscopes and accelerometers are left during the navigation process.

Gyroscopes play an important role in the inertial guidance of rockets.

The gyroscope on the rocket is generally a sensing gyroscope, which can detect different data such as the horizontal, vertical, pitch, heading and angular velocity of the rocket.

And pass it to the control computer of the rocket, and then the control computer of the rocket will use various data given by the gyroscope.

Automatically calculate the current state of the rocket and adjust the attitude.

The action form of the acceleration is similar to that of the gyroscope, but the physical parameters measured by the two are different.

Although the actuator in the attitude control system, the newly developed recoverable rocket is not the same as the previous rocket.

But in the way of navigation, the difference from before is not very big, and the way of inertial guidance is also adopted.

Therefore, the development progress of the navigation system is relatively smooth, but the attitude adjustment system is relatively not so smooth.

Because the rocket has to take into account recovery factors, the sensitivity and accuracy of attitude adjustment have higher requirements.

If the first-stage rocket cannot make sensitive and accurate attitude adjustments when returning to the landing site, it will easily cause various accidents.

After the separation of the first-stage rocket, the attitude control system needs to adjust the swing engine of the first-stage rocket to adjust the angle so that the rocket can return to the landing site smoothly.

"Attitude control system, how is it doing?"

After Zhang Xingyang returned from the high-speed institute of the aerodynamic research center, he rushed to the control system research room.

Ask Qin Ming, who is in charge of the research and development of the control system, about the current development progress of the attitude control system.

You know, what the rocket lacks now is the part of the control system, as long as this part can be successfully completed.

Then the rocket can start the test launch at any time, and then the follow-up low-orbit satellite communication network project can be launched!

"Brother Xingyang, the current problem is still stuck in the problem of controlling the running speed of the computer that I told you last time."

"We have tried to reduce the accuracy of the data input into the control computer, although this has indeed greatly reduced the calculation time of the control computer."

"However, the output control amount of the control computer will have a large deviation, which cannot meet our accuracy requirements."

Qin Ming was also a little helpless. With the current equipment conditions, it was difficult to find a solution that had the best of both worlds.

"We have done simulation experiments on the small supercomputer in the research institute, and the probability that the rocket can land accurately during its return to the landing site is no more than 30%."

Listening to Qin Ming's complaints, Zhang Xingyang rubbed his stubble-covered chin a few times.

"Have you contacted the computer institute? Is there a way for them to provide higher performance computer chips?"

If you want to solve the problem of insufficient computing power of the control computer, the easiest way is to change to a higher-performance computer chip.

Moreover, the computer chips needed for rockets actually do not require high computing power compared to computer chips in other fields.

However, because the working environment of the rocket is very harsh, the stability requirements for the computer chip are relatively high.

As the core computing chip can not meet the requirements of use, Qin Ming naturally contacted the computer, but the result was not satisfactory.

"The latest chip they can produce now can barely meet our work requirements."

"However, the current stability of the latest chip is not very good, especially during the operation of the rocket, it has to withstand high acceleration and strong vibration, which can easily cause the chip to malfunction."

Zhang Xingyang can understand Qin Ming's statement, but in fact, there is not no solution to this matter.

"If the vibration reduction system of the control computer is strengthened and the computer chips are connected in parallel, can the problem of insufficient computing power of the control computer be solved?"

Zhang Xingyang gave Qin Ming a little bit of a pushover.

"However, the size and weight of the control computer will increase several times. Will it exceed the preset value in the previous development plan?"

Of course, Qin Ming didn't do this before, not because he was a fool, but because he would be overweight to control the computer.

Of course, this is because he is still unclear about the current rocket propulsion system, and the thrust is actually more than enough.

If it weren't for the first-stage rocket, it would need to retain a part of the fuel to decelerate the rocket during the landing process.

In fact, the load of the rocket can be further increased.

So now the weight of the control computer is not a big problem, the thrust of the rocket is actually enough.

"Don't worry about the overweight problem of the control computer. Geng Bo's current propulsion system thrust can fully meet the requirements of the control computer after it is overweight!"

Zhang Xingyang said firmly, giving Qin Ming a reassurance.

After hearing Zhang Xingyang's assurance, Qin Ming also laughed:

"If you don't worry about weight, then the problem of controlling the computer is easy to solve."

"I can also guarantee that the attitude adjustment system will be completed within a month!"

Zhang Xingyang knew Qin Ming's character. In fact, he was a very serious person. He never said anything he was not sure about in research.

"Among the major systems of the rocket, your control system is the only one missing."

"As long as your control system is completed, we will be able to conduct a complete rocket production test immediately!"

"Our control system research room will definitely not slow down the overall development progress of the rocket!"