Middle-aged people were trained like quails and answered dejectedly, "Father, I will arrange for Vicky to go to class tomorrow."
"Hum! Don’t read the scriptures and be silly. See which powerful country in the world depends on these scriptures? " Old Hale hated iron and scolded his son, "Do you want Vicky to shepherd sheep here like you?"
Harley, an old man in Mao’s time, knows very well that the real power of this world is the changeable technology, not the illusory gods.
The powerful technology brought by the Chinese people can turn the desert into farmland and the farmland back into desert.
I don’t want to integrate into this era and actively embrace the trend of science and technology, which will eventually become the residue of elimination.
However, although the local education system accepts employees’ younger brothers, it is still possible to transfer classes if you have money.
Chinese cram schools in Central Asia have become more and more popular and even become an industry.
Many people don’t know how important it is for their future to choose at this time, which can save their lives.
Chapter five hundred and ninety The moon (a)
June 17, 2015
Super-heavy carrier rocket-Chang 13 failed in the first test, and the carrier rocket disintegrated and exploded about 27 seconds after launch.
This modified super-heavy rocket weighs 266 tons after being fully fueled, and the payload of 172 tons in low earth orbit is close to 65%.
Huang Xiuyuan came to Wenchang Aerospace City General Assembly Factory by body double robot, and the chief engineer of the 13 th project, Academician Wang, and all the researchers, engineers and designers were busy.
After reading the preliminary accident investigation report, Huang Xiuyuan roughly understood the possible causes of the accident.
Academician Wang said distressfully that "the disadvantages of parallel engines are really very difficult to deal with"
"Unsurprisingly" Huang Xiuyuan was not surprised.
Huang Xiuyuan knew from the design idea of Chang-13 that this project would definitely not be too smooth to transport rockets for Chang-13, and got enough power to connect six large rocket engines in parallel and use solid fuel-N2/6.
The disadvantage of parallel engines is that they are easy to interfere with each other, which tests the coordinated control of various engines. Once any engine goes wrong, it will easily lead to the overall loss of control.
This test launch was due to the fact that the output power of one engine was about 61% larger, which destroyed the original flight path.
Besides, Chang 13 has other problems, which led to the failure of this launch.
Academician Wang Naidi said, "It is estimated that we have to rule out the problem once and it may not be tested until September."
"No failure is also an experience, which is better than a problem in actual operation."
Academician Wang is also worried about this. "It is too tight. If it can be extended for one or two years, we will definitely not have such a serious problem."
The space system didn’t know about controlled nuclear fusion, and was excited about such a large number of space projects in such a hurry, but at the same time it was deeply stressed.
There is nothing that can be done. controlled nuclear fusion’s technology is too sensitive, which will lead to the complete disintegration of that fragile strategic balance.
It is very likely that the small glacier climate before Canada will aggravate the gap between Greater China and other regions, and these conditions will increase the possibility that some forces will take risks.
Therefore, it is urgent to promote the space industry and build a moon city.
Although the failure of the first test of the Chang-13 rocket cast a shadow on aerospace science and technology, Huang Xiuyuan was not too worried. After all, the maximum payload of the Chang-13 rocket is only 172 tons in low-earth orbit, 15 tons in synchronous orbit and 7 tons in lunar orbit.
Instead of the core-class 11-carrier rocket, the Golden Winged Dapeng can achieve 243 tons of near-earth orbit, 171 tons of synchronous orbit and 92 tons of lunar orbit.
This is a very amazing event. The launch of the Holly Golden Wings Dapeng rocket is very mature, and it is also the main means to enter the outer Pacific at present.
With the Golden Wings Dapeng, why continue to develop Chang 13 is mainly to cooperate with another project.
The comprehensive performance of Chang 13 is obviously 11 times longer than that of Bujin Wing Dapeng+,but this project must continue to be developed.
Because Chang 13 is not only planned for atmospheric launch, but also assembled in stages, that is, after assembly, the super-heavy spacecraft will return to the moon.
According to the space science and technology and the eagle space planning, Chang 13 will be broken down into five parts and launched to the Tiangong by the Golden Wing Dapeng, and then the five modules will be assembled.
The payload of the assembled long-13 synchronous orbit in near-earth orbit will rise to 1 ton, and the payload in lunar orbit can reach 94 tons.
If it is a vehicle that travels between near-earth orbit and lunar orbit, it will change the problem that the return load of the current lunar spacecraft is too small.
At present, if the lunar spacecraft wants to return to the blue star, it must carefully calculate the maximum load to return to the near-earth orbit minus the extra weight that each system of the spacecraft can bring back to the near-earth orbit, about 15~32 tons.
This is still a manned spaceship. If it is a manned spaceship, the extra load is about 6~17 tons.
If the spacecraft has more than 5 crew members, the payload will be further reduced.