After the shape design of the recyclable rocket is completed, the previously completed 1,210-ton propulsion system will be added.
If a rocket is compared to a person.
So at this moment, he already has strong and strong legs and a healthy and straight torso.
What is still missing is the eyes and ears that can clearly explore the surrounding environment, and the brain that decides where the rocket should go!
The rocket's eyes and ears are actually the measuring instruments in its navigation system.
Various types of rockets will adopt different navigation methods, such as inertial navigation, satellite navigation, starlight navigation, etc.
Generally speaking, rockets use inertial guidance, using gyroscopes and accelerometers for navigation.
A small number of people use satellite navigation systems to assist in positioning. As for those that use neutron stars at relatively fixed positions in the universe for navigation, they are relatively rare. Starlight guidance is only used when detecting planets in the solar system.
But generally speaking, no matter which navigation method is adopted, various gyroscopes and accelerometers are used during the navigation process.
Gyroscopes play an important role in the inertial guidance process of rockets.
The gyroscope on the rocket is generally a sensing gyroscope, which can detect different data such as horizontal, vertical, pitch, heading and angular velocity of the rocket.
And it is passed to the rocket's control computer, and then the rocket's control computer will based on various data given by the gyroscope.
Automatically calculate the current rocket status and adjust the attitude.
The function of acceleration is similar to that of a gyroscope, except that the physical parameters they measure are different.
Although the actuator in the attitude control system, the newly developed recyclable rocket is not the same as the previous rocket.
But in terms of navigation method, it is not very different from before. Inertial guidance is also used.
Therefore, the development progress of the navigation system is progressing relatively smoothly, but the attitude adjustment system is relatively not so smooth.
Because the rocket must 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 can easily cause various accidents.
After the first-stage rocket separates, the attitude control system needs to adjust the swing engine of the first-stage rocket and adjust the angle so that the rocket can return to the landing site smoothly.
"How is the attitude control system doing?"
After Zhang Xingyang came back from the Aerodynamics Research Center's High Speed Institute, he hurriedly came to the control system research room.
Ask Qin Ming, who is responsible for the development of the control system, about the current development progress of the attitude control system.
You know, what the rocket lacks now is the control system, as long as this part can be completed smoothly.
Then the rocket can start test firing at any time, and the subsequent low-orbit satellite communication network project establishment work can also begin!
"Brother Xingyang, the current problem is still stuck on the problem of controlling the computer's running speed as I told you last time."
"We have tried to reduce the accuracy of the data input into the control computer, but this has indeed greatly reduced the calculation time of the control computer."
"However, the deviation range of the output control volume of the control computer will be a bit large, and it cannot meet our accuracy requirements."
Qin Ming is also a little helpless. With the current equipment conditions, it is difficult to find a solution that has the best of both worlds.
"We have conducted simulation experiments on the small supercomputer in the institute. When the rocket returns to the landing site, the probability of landing accurately is no more than 30%."
Listening to Qin Ming's complaint, Zhang Xingyang rubbed his chin a few times, which was covered with stubble before he had time to shave.
"Have you contacted the Institute of Computer Science? Is there any way they can provide higher-performance computer chips?"
To solve the problem of insufficient computing power of the control computer, the easiest way is to replace it with a higher-performance computer chip.
Moreover, the computer chips required by rockets do not actually have high computing power requirements compared to computer chips in other fields.
However, because the working environment of rockets is very harsh, the stability requirements for computer chips are relatively high.
The core computing chip could not meet the usage requirements. Qin Ming naturally contacted the computer, but the results were not ideal.
"The latest chips they can come up with now can barely meet our work requirements."
"However, the current stability of the latest chips is not very good, especially during rocket operation. It has to withstand high acceleration and strong vibration, which can easily cause the chip to malfunction."
Zhang Xingyang could understand Qin Ming's statement, but there was actually no solution to this matter.
"If we strengthen the vibration reduction system of the control computer and connect computer chips in parallel, can we solve the problem of insufficient computing power of the control computer?"
Zhang Xingyang nudged Qin Ming, who was a little bit confused.
"But the size and weight of the control computer will increase several times. Will it exceed the pre-designed values in the previously formulated development plan?"
Of course, Qin Ming didn't do this before, not because he was stupid, but because doing so would cause the computer to be overweight.
Of course, this is because he still doesn't know the current rocket propulsion system. The thrust is actually more than enough.
If it weren't for the fact that the first-stage rocket needs to retain part of the fuel after it breaks away, it will be used to slow down the rocket during the landing process.
In fact, the payload of the rocket can be increased even further.
Therefore, it is not a big problem if the control computer is a little overweight now. The thrust of the rocket is actually sufficient.
"Don't worry about the overweight of the control computer. The thrust of Geng Bo's current propulsion system can fully meet the requirements after the control computer is overweight!"
Zhang Xingyang said categorically, giving Qin Ming reassurance.
After hearing Zhang Xingyang's assurance, Qin Ming also laughed:
"If you don't worry about the weight, then the problem of controlling the computer is easy to solve."
"I can also guarantee that the posture adjustment system will be ready in less than a month!"
Zhang Xingyang knew Qin Ming's personality. In fact, he was a very serious person and never said anything he was unsure about in terms of research.
"Among the major systems of the rocket, your control system is the only one missing."
"As soon as your control system is completed, we will be able to carry out complete rocket production and testing immediately!"
"Our control system research laboratory will definitely not slow down the overall development progress of the rocket!"
(End of chapter)
