Chapter 557

Kuafu said so can not exaggerate, with the speed of the two detection, if out of the control of Lei Tiantang, it can really cause no small harm.

You know, these two detectors are wrapped by thick multi-layer protective layer, so the overall strength of the detector is very strong. If such a solid object is knocked out at such a high speed, you can know the danger even if you think about it. No wonder he should remind his boss in particular.

"I see! I will be careful, but your worries are unnecessary! As long as it is within the scope of my source, there will never be any danger you said. You can test your own! " Lei Tiantang said confidently.

If he had just acquired the ability, he might have problems because of the lack of proficiency in control. But now it has been more than three years. After such a long time of training, controlling the field has become an instinct. Therefore, Kuafu's worry is unnecessary in his opinion.

Even in the case of such a high-speed movement, there will be no problem, because the two detectors themselves can move at such a high speed under his control.

Of course, he is clear about the importance of the detector's orbit changing ability, so he attaches great importance to this test.

The process of autonomous orbit change of satellite is called orbit change. To launch various satellites and detectors into earth orbit or other solar system orbit requires orbit change.

The satellite orbit is elliptical. To save rocket fuel, you can first launch it to a large elliptical orbit. When the satellite is in apogee, the attitude on the satellite will be adjusted to ignite the rocket, so that the orbit of the satellite becomes the required height.

Orbit change can be repeated, which requires accurate calculation of satellite orbit change time, controlled by ground command. Affected by the earth's gravity, the orbit of satellites and spaceships (including the space station) will descend at a speed of about 100 meters per day.

Such a drop in altitude will affect the normal operation of satellites and spaceships (including the space station), so in the process of orbit operation, they often need to change orbits.

In addition to avoiding the damage caused by "space junk", orbital maneuver is mainly to ensure its operation life, and these are equally important for the detectors that Lei Tiantang is testing now.

In the future, most of these detectors will enter the star system beyond the small black hole, and many of them will also enter the orbits of planets or asteroids in the star system, so as to carry out long-term exploration missions to them.

This requires that the orbit transfer function of these detectors will never be a problem, and the requirements for the orbit change function of these detectors can be much higher than those of satellites and other detectors launched from the earth to the earth orbit.

After all, we don't know what the environment of the stellar system over there is, and we don't know about the planets and asteroids to be explored. If we want to enter their orbits according to the exploration mission, the orbit changing ability of the detector will certainly be higher!

In addition, all kinds of man-made garbage and debris of small celestial bodies in the earth orbit can cause damage to satellites and other detectors. After a long time of detection and recording, human beings have mastered them. Therefore, satellites will change their orbits in advance before they are hit to avoid being destroyed.

The detectors that Lei Tiantang intends to throw to the small black hole don't have this treatment. Although each detector is equipped with high-power detection equipment, even if the space garbage is detected in the process of high-speed movement, the reaction time of the detector is very short.

Therefore, the orbit change function requirements of the detector must be higher, otherwise Lei Tiantang can throw the detector over there every other time!

"Good! Track change test begins!

Main thruster fire! ...

auxiliary thruster ignition! ...

spare thruster ignition... "With Kuafu's reminder in the headset, the two detectors, which are moving at a high speed, started various orbit changes.

In order to ensure that the orbit change function of all detectors can meet the complex mission requirements, the orbit change thrusters of these detectors have two systems. One is composed of the main thruster and the auxiliary thruster. This system is the ion thruster system, which is not only the acceleration system of the satellite, but also their orbit change system.

Ion thruster, also known as ion engine, is a kind of space electric propulsion technology. It is characterized by low thrust and high specific impulse. It is widely used in space propulsion, such as spacecraft attitude control, position keeping, orbit maneuver and interstellar flight.

The principle is to ionize the gaseous working medium first, and then accelerate the ion ejection under the action of strong electric field, and then push the satellite to conduct attitude adjustment or orbit transfer tasks through the reaction force. Ion thruster has the characteristics of high specific impulse, high efficiency and low thrust.

Compared with the traditional chemical propulsion, ion thruster requires less working fluid mass, which is the most suitable for long-distance navigation among the practical propulsion technologies. This feature is the reason why Kuafu and deep space laboratory regard it as the main propulsion system.

But this propulsion system is not without disadvantages. Of course, the main drawback is that their thrust is not high. Even if the most advanced ion thrusters are used in the deep space laboratory, their thrust is not high.The advantage of such a propulsion system is that it can accelerate the detector continuously for a long time, and it needs to carry little fuel. It can also react in advance for orbit change operation if it is prepared.

However, its disadvantage is that the ability to react instantaneously is not enough. What is the situation in the cosmic environment of the small black hole and the star system in the mission area is still unknown, but it must be very complicated. In such a complex cosmic environment, all kinds of accidents may occur at any time.

There will be a backup system to deal with these situations.

Therefore, these detectors are also equipped with a set of chemical fuel propulsion system. Using the high explosive nature of chemical fuel propulsion system, these detectors can be more calm in the face of these emergencies, and the service life of the detector can be extended.

After all, it takes a long time to explore the universe to obtain more abundant data. If a probe is launched and it works for a few days, how much useful data can be obtained?

In particular, Lei Tiantang also hopes that those space telescopes in this batch of detectors can detect the situation of the star region where the small black hole is located, and then through the star map to compare whether its position can coincide with the star map detected on earth!

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