I have a little black hole

2020!A brand new start!I wish you all a Happy New Year!A lot of blessings!Happy every day!!!

"How does this thing look so similar to the design in those science fiction movies?" Lei Tiantang couldn't help but chuckled when he saw the assembly after installing the solar sail.

"Haha! Don't even say that, boss, this design is really borrowed from science fiction movies! If we install solar sails according to our design, the flying speed of the combined body will also be increased by about double the speed. Our deep space exploration program saves more time!

After all, the final diameter of the solar sail we plan to reach is about 300 meters!Zhang Hanxiu pointed out the design drawing and introduced it.

This is well understood. We all know that light is composed of photons with no static mass but momentum. When the photons hit a smooth surface, they can change the direction of movement like a table tennis bounced back from the wall. And give the impacting object corresponding force.

The thrust generated by a single photon is extremely small. At the distance from the earth to the sun, the thrust generated by the light on a square meter of sail surface is only 0.9 dynes, which is less than the weight of an ant.

Therefore, in order to maximize the acceleration from the sun, the solar sail must be built very large and light, and the surface must be very smooth and flat.

If the diameter of the solar sail is increased to 300 meters, its area is 70686 square meters, and the thrust obtained by the light pressure is 0.034 tons.

It seems that this thrust is very small, but because the light from the sun provides endless energy, the spacecraft with large solar sails can eventually advance at a speed of 240,000 kilometers per hour.This speed is 4-6 times faster than the fastest spacecraft propelled by rockets today.That is 6 times faster than the second universe and 4 times faster than the third universe.

It is not difficult to understand this.Because the spacecraft operating in space is in a state of weightlessness and no air resistance, as long as a little force is applied, the direction and speed of movement will be changed.

This is similar to the working principle of the ion engine used in the assembly, and it seems that the thrust is very small, but as long as the acceleration time is long enough, the flight speed will become faster and faster!

"It seems that it is troublesome to design such operations as direction control when the assembly is flying? And how to solve the weight problem of the solar sail?"

After seeing the projection of the combination of solar sails and the projection of the origin, Lei Tiantang always felt that this design is a bit strange, because compared to this huge solar sail, the volume of the combination itself is very slim, In this way, it is very troublesome to control the combined body of them.

And even if the solar sail itself is made thinner, it has weight. If the thrust generated by the solar sail is offset by its own weight, then this design will not be worth the weight, because such a large block wants to fly at high speed. Controlling it is really not a simple matter.

"We have done a lot of design on control issues to ensure the fine control of the solar sail after it is fully deployed. Anyway, this design also launches a combination away from the sun, like the Mercury and Venus probes we are still designing. There is no such design.

Generally speaking, if you are flying in the direction of sunlight, the angle adjustment of the solar sail is relatively easy to solve. We have verified this in the simulation system.

As for the weight of the solar sail, because of the use of the latest graphene composite material from the material company, the 300-meter-diameter solar sail can be combined with its eight brackets to weigh only 25 kg, compared to the weight of the solar sail. The acceleration of the combined body, its own weight is completely negligible.Zhang Hanxiu enlarged the details of the solar sail's projection and explained.

"But how do you ensure that the assembly can smoothly carry so many detectors for a safe flight? If there is an accident during the flight, the loss will be great!"

Lei Tiantang is still not very optimistic about this design. One assembly carries so many detectors. Looking at the simulation picture on this assembly, a total of 40 detectors of different types are carried. The smallest weight is 15 tons.

Even if they only use rockets to launch them into the Earth's transfer orbit and combine them, using the company's largest load of'Julingshen 2'heavy-duty recyclable rockets to launch, it can launch up to two detectors at a time.

Coupled with the combination bracket, 4 ion engines, solar sails, two rocket boosters and its fuel filling, these together need to be launched about 30 times just to launch them!

Even if the company's launch cost has now dropped to about US$5 million, the launch cost will have to reach US$200 million. After all, even a recyclable rocket is lossy, and these costs must be added.

The cost of manufacturing these detectors and ion engines is more than 500 million US dollars even if the cost price is because most of the things are made by the company itself, and the manufacturing cost has reached so much!

700 million US dollars seems to be not much to the infinite gravity group, but if you add the cost of time, then the loss is unpredictable. After all, just 30 launches and the time to combine them will take at least half a year. Time, after all, is not to say that these things are launched into the earth's transfer orbit, and they will be finished in a single fight.

Relevant testing work needs to be confirmed again and again. If you can find the problem at the door of your home, it is fine. If you find the problem after the release starts, it will be troublesome.

After all, there may be more problems in the flight process. As long as there is a problem, it will cause all the detector launch missions to fail.

Even if the company is rich, it can't accept the launch failure of so many detectors. The waste of manufacturing costs and launch costs is not much related, but at least six months of delay can cause problems in the company's space program. This is not acceptable to Lei Tiantang, so he specifically asked this question.

"Of course, we also have a comprehensive consideration of this issue. The boss you worry about the problem may indeed occur, even if we do more testing and detection, we may not be able to encounter dangerous situations during the flight of the assembly. 100% expected.

But boss, you forgot that our detectors are also capable of flying. If there is an accident during the flight of the assembly, then these detectors can be separated from the assembly directly according to the predetermined procedure, and then they You can use your own ion engine to adjust the track and continue the flight operation!"