Chapter 828 The advantages of Nanyang (third update, please subscribe)
No. 1 in the world!
Being number one in the world can indeed bring national glory, no one will ever doubt this.
In fact, just when Li Yi'an delivered the speech "We are going to march into space", blowing the clarion call to march into space and attracting the attention of the whole world,
A man from Nanyang University A top-secret experiment is being carried out in secret - the development of communication satellites.
In fact, as early as four or five years ago, British scientist Clark explored the possibility of establishing communication relay stations outside the earth.
Now the group chaired by Yuan Jialiu has gathered the most outstanding professors, doctors and graduate students from Nanyang University, trying to develop an artificial satellite that can turn Clark's prediction into reality.
“...All communication subsystems of the satellite were developed by modifying commercial equipment. There are 4 antennas installed on the surface, two of which are transmitting antennas and two are receiving antennas. Not only can It can relay radio and television signals, and even telephone signals, making intercontinental calls possible."
Zhao Qingyun pointed to the drawings and introduced the overall design of the satellite to everyone present.
Although the overall design of the satellite was completed, Yuan Jialiu still frowned. As the chief engineer, he knew very well what the biggest problem with this satellite was.
"Life span!"
Yuan Jialiu interrupted Zhao Qingyun and said.
"How long is its lifespan?"
"Gong Yuan, in order to extend its working time, we use a larger nickel-cadmium battery with a larger battery capacity, which is powered by the battery The working life of the satellite is expected to reach 17 days. However, its main purpose is to verify whether the "Wanhu Type 5" missile can be launched into orbit and the satellite's communication relay capability. Therefore, the 17-day working time is basically That will satisfy the requirement."
Zhao Qingyun's answer made Yuan Jialiu say straightforwardly.
"It is very expensive to basically meet the requirements. The cost of a "Wanhu Type 5" missile is almost one million yuan. Plus satellites, each launch costs at least 3 million yuan. 3 million yuan is only 17 days of work. …Nanyang is not that arrogant!”
The space industry is expensive, and every launch means spending a lot of money. In this case, Nanyang must be changed every time. Got to be more cost-effective.
The exploration of space can only continue if it is cost-effective enough. Otherwise, what awaits Nanyang in the end is failure.
After all, if you keep burning money, one day you will no longer be able to afford it. Even as an engineer Yuan Jialiu is convinced of this.
After all, cost control is basic common sense. Only when costs are controlled, or each rocket launch can be fully utilized, can the aerospace industry continue.
Therefore, now he is more concerned about how to make expensive satellites work as long as possible, so as to control costs.
Looking at everyone present, Yuan Jialiu said directly.
“So we must solve the problem of power supply... It must be able to work in space for a long time, for one year, two years, three years, or even ten years. The longer it works, the cost will be The lower. "
After Yuan Jialiu made this request, everyone fell into silence. Suddenly, someone said in the corner.
“What if I could charge the battery?”
"Charge the battery?"
Yuan Jialiu looked in the direction of the sound, looked at the young man who spoke, and asked.
“What’s your name?”
Liang Zhenhua replied.
"Gong Yuan, my name is Liang Zhenhua, and I am..."
Before he could finish speaking, Yuan Jialiu asked.
“What do you have in mind?”
“I think we could try solar cells.”
“No way,”
As soon as his suggestion was put forward, some people objected. "We have made calculations in this regard. Using solar cells will make the satellite seriously overweight, and it is not suitable for use on satellites."
Liang Zhenhua nodded and said.
“Yes, if you use cadmium sulfide solar cells, they will definitely be overweight, and their power generation efficiency is too low.” Cadmium sulfide solar cells were made, but they had no practical use because of their low efficiency.
“But in May this year, Chapin, Fuller and Pierson of Bell Labs in the United States launched a monocrystalline silicon solar cell with a conversion efficiency of 4.5%. This is a type of solar cell with practical value. Solar cells, and two months ago, Will discovered that nickel arsenide has a photovoltaic effect, and deposited a nickel sulfide film on glass to make a solar cell. I think solar photovoltaic power generation technology has practical value now, and we can definitely Consider introducing both technologies.”
As soon as Liang Zhenhua finished speaking, Yuan Jialiu picked up his pen and started calculating. It was nothing more than the power consumption of the equipment and the power provided by the solar panels. Soon, when he got the answer, he raised his eyebrows slightly and said.
"Yes, it should be possible!"
After that, he took another serious look at Liang Zhenhua and said.
“Immediately send people to the United States to negotiate with Bell Labs about the introduction of solar cell technology.”
In fact, this is also the biggest advantage of Nanyang’s development. As a member of the British Commonwealth and the Western world As a member of the Communist Party of China, as long as there is need, we can introduce various required technologies and equipment from Western countries. In contrast, the Soviets definitely did not have this convenience, and thanks to this, in the past few years, Nanyang was able to introduce a large number of advanced technologies from Britain, the United States and other countries, promoting development in all aspects.
Now since the space industry needs new technologies, let’s introduce them directly.
In contrast, the Soviets could only steal through agents, and this obviously took time.
Just when Yuan Jialiu sent personnel to the United States to discuss the introduction of technology with Bell Labs, Li Yian was staring at the drawings in front of him in his official residence office more than ten kilometers away - this was the Wanhu Type 5 model. Engine drawings.
“…The booster in the rocket uses the YZ-109 engine, and the core stage uses the YZ-110. In fact, the basic performance of these two types of rocket engines is very close, and most of the YZ- The 110 engine unit and the YZ-109 engine unit can be integrated together, thereby reducing the cost of developing and refining the engine. The biggest difference between the two is that the YZ-110 has two additional swimming engines for adjusting the rocket's attitude. < br>
Compared with the V-2 missile that uses a gas rudder under the engine to adjust its attitude, the Wanhu Type 5 uses a swimming engine to achieve the same effect while having stronger attitude control capabilities
Equipped with 5 rocket engines, one for the core stage and one for each of the four boosters, each engine has four combustion chambers,"
Although Eugene is the chief designer of the Wanhu Type 5 rocket , but what he is best at is designing rocket engines. Many of Nanyang's rocket engines came from him, and it was under his leadership that Nanyang established a complete rocket development and testing system
<. br>In the process of competing for German rocket technology, although Nanyang did lag behind the United States, this did not widen the rocket technology gap between the United States and the Soviet Union. On the contrary, Nanyang, like the Soviets, passed rigorous testing and was absorbing it. Based on the technology of the German V-2 missile, the intercontinental ballistic missile was developed before the Americans.
Although... it has not yet been successfully tested and has failed twice.
"Adopted. The propellant is liquid oxygen/kerosene, and this propellant combination has been used on the YZ-106. The combustion chamber pressure of this type of engine is 5.89Mpa, the thrust at sea level is as high as 833.98 kilonewtons, and the vacuum thrust exceeds 1,000 kilonewtons. ”
Finally, Eugene emphasized.
“After repeated inspections, we have further optimized the engine, turbopump and other control systems. I believe that this time, we are absolutely sure of success.”
After that, Eugene looked straight at Your Excellency. The success of the Soviet Union deeply stimulated him. He hoped to send the Nanyang satellite into space as soon as possible before the Soviet Union.
To this end, they reorganized tens of thousands of drawings in just one and a half months to find loopholes in the design and eliminate some potential problems.
Now, it’s time for the third test launch again. Of course, if you want to conduct a third test launch, you still need the approval of the military. After all, the military is now responsible for this project.
But surprisingly, from Eugene's point of view, Li Yian, who blew the horn, didn't seem to be in a hurry at all. He didn't even care about the third test. His interests seemed to lie elsewhere.
"Liquid oxygen/kerosene propellant...this!"
This does not seem to be the best choice. After thinking about it, Li Yian said.
“Have you tried other fuels?”
(End of Chapter)