"Brother Zhang, are you sure you want to do this?"
In front of Geng Bo was a drawing that was so complex that most people would get dizzy just looking at it. It depicts densely packed control units and various valves and oil circuits.
Even though he is an outstanding graduate of the Aerospace University, he feels a little dizzy when he sees this drawing.
Zhang Xingyang's eyes shone brightly and he began to explain the simple structural diagram he had drawn to Geng Bo with great interest.
"This is a 110-ton liquid oxygen and kerosene engine. It adopts a gas generator cycle design. It has an estimated dry weight of 510 kilograms, a vacuum thrust of 1132 kN, and a vacuum thrust-to-mass ratio of 221. The cost of this engine is included in my design. It won’t exceed 2 million.”
Geng Bo on the side had gone from shocked to speechless. Apparently he thought Zhang Xingyang was just bragging.
Indeed, in this era where the push-to-weight ratio generally does not exceed 100, a monster with a push-to-weight ratio exceeding 200 suddenly appears.
Normal people would not believe that this thing was real, and would only think that their boss might be crazy, so they would believe that this thing could reach such data.
"With such a large thrust-to-weight ratio and low-cost rocket engine, even if the international community increases our insurance premiums, we can still get a lot of commercial launch orders."
Zhang Xingyang gushed about the engine he designed, which would shock a group of people if it were exposed to the outside world.
"Geng Bo, let's make him together!"
Zhang Xingyang patted the other party's shoulder heavily, looked at Geng Bo with shining eyes, and said happily.
Geng Bo hesitated to speak, looked at Zhang Xingyang for a while, and then said with difficulty:
"Xingyang, the new rocket engine is not that easy to make. The problems involved cannot be solved by us two students who have just stepped out of school."
Geng Bo swallowed his saliva. He actually didn't want to undermine his friend's confidence, but if he didn't explain the difficulties clearly, his friend would probably fall deeper into trouble. It would be better to explain it clearly from the beginning.
"I don't know how you drew such a structural drawing. The production of rocket engines cannot be successful with drawings. How many manufacturers are needed to produce various structural parts, and even engine assembly? You and I don’t even know how many difficulties there are.”
After hearing Geng Bo's persuasion, Zhang Xingyang's originally cheerful expression gradually became calmer, and his eyes returned to their normal coldness.
Zhang Xingyang said in a calm and calm tone: "Brother Bo, I know better than you how many technical difficulties there are, but I also believe that these difficulties are only technical. As long as we are determined, there is nothing we can't do."
The large number of future technologies recorded in the brain through protein chips and silicon crystal computing storage units are Zhang Xingyang's greatest confidence.
The scientific and technological content recorded in it includes what was once the country's highest level of confidentiality, such as inter-galactic sub-light spacecraft engines, 11-dimensional space research, human sublimation projects, etc.
Although he didn't know why the future protein chips and silicon crystal computing and storage units would come to this era with him when traveling through time and space, but it was a good thing anyway, and Zhang Xingyang didn't think too much about it.
"Uncle Liang and I have discussed it, and now the hospital can still spend three million. The first verification machine will cost about two million, and one million will be enough for subsequent testing."
Zhang Xingyang looked at Geng Bo with his bright eyes. At this moment, Geng Bo felt as if he was about to be convinced.
Geng Bo could feel Zhang Xingyang's persistence in the 110-ton liquid oxygen kerosene engine.
I feel that my friend is like a stubborn donkey who will not look back until he hits the wall. If he hits the wall, he will knock it down and then walk over. Geng Bo had no choice but to agree to give it a try with his friends:
"Okay, I'll do it with you, who makes us good brothers!"
After correcting his mentality, Geng Bo finally had the heart to look at the engine drawings drawn by Zhang Xingyang seriously.
"Xingyang, do you use a high-pressure afterburning cycle for this engine? Isn't this technically very difficult?"
"There is no way. If an open afterburning cycle is used, the gas will turn into exhaust gas after driving the turbine pump, causing some waste. More importantly, this will inevitably reduce the pressure of the combustion chamber, resulting in a decrease in the thrust of the engine."
Zhang Xingyang also became interested and planned to discuss it with his friend, who had never seen high-efficiency rocket engines in the future.
"Although the high-pressure afterburning cycle is more complicated to control than the open afterburning cycle, the exhaust gas generated by its gas generator is not directly eliminated, but is input into the combustion chamber for afterburning, which can improve the efficiency of the engine. Push-to-weight ratio.”
Geng Bo also talked about the engine control problem, "In this case, your control system will be more than one order of magnitude more complex than our current control system. It is estimated that our domestic industrial computers will be difficult to do such a job, right? Are you planning to import it from abroad? import?"
"I have already thought about this issue. Although the current performance of domestic industrial computers is not particularly excellent, the basic production capabilities of various manufacturers are not bad.
Only certain modifications are needed according to the working conditions of the engine, and the performance of the industrial computer can meet the work requirements. "
Zhang Xingyang felt that Geng Bo seemed to have doubts about many aspects of the engine, so he simply let go and said:
"Not only the control system, but the materials of the combustion chamber also need to be strengthened. Our current engine materials are difficult to withstand the high temperature and high pressure of the high-pressure supplementary combustion cycle, but I actually have solutions to these problems in my mind."
"Brother Bo, the gap between our country's advanced level and that of foreign countries in aerospace is at least thirty years ago. If we don't catch up now, we don't know how many lessons we will have to make up for in these areas in the future to catch up. them."
"The struggle for space hegemony in the next century will definitely be one of the most fierce competition areas among major powers. Once we fall behind in this aspect, we will lose our future!"
Geng Bo was also inspired by Zhang Xingyang's impassioned speech and said:
"Xingyang, you know, in fact, when I graduated last year, a senior invited me to go to the other side of the ocean. If I went there, maybe I would be able to come into contact with the most advanced rocket technology in the world, but I refused."
Speaking of this, Geng Bo seemed to have thought of something, glanced at Zhang Xingyang, and continued.
"When I was a teenager, after I learned that foreigners landed on the moon, but no one of us could even go to space, I made a vow that I must learn aerospace, and I must let our people land on the moon!"
Zhang Xingyang patted Geng Bo on the shoulder and said pointedly:
"Your wish will definitely come true, and our red flag will definitely be planted on the moon!"
