Chapter 382 Prototype No. 01 threatened by floods
According to the original plan, in the next few days, Chang Haonan should work with Sun Huizhong to implement the DSI applied to the training aircraft as quickly as possible. The air duct and the overall structure of the aircraft were designed, allowing Guizhou Airlines to start manufacturing the first prototype as soon as possible.
However, the plan could not keep up with the changes.
His previous worries are gradually turning into reality——
With heavy rains falling in most parts of the country for many consecutive days, the super flood of almost unprecedented scale and scope seems to be real. It’s going to be early...
However, what really made Chang Haonan realize the seriousness of the situation was that on a night of moderate rain as usual, he was called to the Commission of Science, Technology and Industry for National Defense for an urgent small-scale internal meeting.
Far less formal than last time, but the specifications are even higher.
Liang Zhuoping got straight to the point and took out a piece of recording paper.
The above is a summary of the call content:
“According to the report of Factory 132 this afternoon, in the past half month, the total precipitation in Chengdu has exceeded 550mm. Although the factory area The interior is doing its best to drain the water, but the local natural water storage capacity has basically reached its upper limit, and water has accumulated on the ground in some low-lying living areas.”
"According to today's report from the Meteorological Bureau, after a brief period of cloudy weather from tomorrow to the day after tomorrow, there will be heavy to heavy rains for at least a week. According to the judgment of Comrade Yang Baoshu, general manager of Rongfei, it is difficult for the interior of the 132 Factory to bear any more With the impact of a round of rain, and as time goes by, the possibility of inducing geological disasters continues to increase, there is a high risk that the No. 01 prototype of Project 10 will continue to be parked in the assembly workshop. "
" So Mr. Baoshu just called us and proposed two methods. One is to move the prototype to a relatively high position in the factory area, where the radar station of the 132nd Factory Militia Anti-Aircraft Battalion used to be. It is flat and paved with cement, so it should be able to last another 5-7 days, but if the rain continues unabated after a week, I am afraid we will still suffer losses."
"Second..."
Speaking of this, Liang Zhuoping even hesitated before continuing:
“Considering that the No. 01 prototype of Project 10 is actually capable of its first flight, in order to avoid greater losses, , he hopes to allow Flight 01 to take off early the day after tomorrow and transfer to a safer airport nearby.”
Obviously, this is definitely not optimistic news.
An aircraft that has not yet made its first flight has to consider a long-distance transfer flight under relatively harsh weather conditions.
The risks are certainly not small.
For Rongfei to make such a shocking request only shows that the local flood control situation is already difficult to control.
Everyone’s expressions became serious.
Although Chang Haonan has been paying attention to the precipitation conditions across the country from the news these days, this application from Factory 132 made him intuitively feel the huge threat of floods for the first time.
After a period of silence, Ding Gaoheng cleared his throat and spoke first to confirm:
"According to Yang Baoshu's intention, the morning of tomorrow should be the final take-off window?"
Liang Zhuoping nodded:
"Yes, the weather conditions further away do not support flying at all, and it is also very difficult to move from that radar position to the runway. Basically, if you choose the first path, you will only We can fight the flood to the end.”
No one spoke again for the next few minutes.
“Pop——”
The clear sound of lighter sounded in the small room.
Director Cao Gangchun of the General Armament Department habitually wants to light up a cigarette.
But just when the flames reached the head of the cigarette, he looked at Chang Haonan sitting next to him. After a moment of hesitation, he still did not light it and stuffed the cigarette back into the cigarette case:
"Comrade Xiao Chang, you participated in the entire ground test of the No. 01 prototype. I would like to ask, do you think this aircraft is currently capable of long-distance flight transitions?"
The latter lowered his head and pondered. After a while:
“Some of the hidden dangers discovered during the ground test have been eliminated, and the entire aircraft design has been completely verified, so I don’t think there is a problem when it comes to long-distance flight.”< br>
However, before Cao Gangchun could speak again, he continued to add:
“But the problem is, first of all, Project No. 10 currently only has one prototype, and all other related auxiliary equipment are still there. During the research and development process, I’m afraid there will be a lot of trouble if we have to change locations.”
"First of all, the No. 01 prototype does not even need to use the auxiliary fuel tank. Considering that some fuel must be reserved for backup when landing, the safe transition distance may not exceed 1,000 kilometers. This distance is the plateau to the west, and the altitude of AL31FN The ability to take off and land on the plateau has not yet been verified. Going south and east, the risk of floods is greater than that of Chengdu, so we can only go northwest, and the distance is very limited. We cannot allow planes to land at civil airports.”
"Secondly, even if the transition is over, the local area will definitely not have the ability to maintain and protect domestic third-generation fighter jets. It will be difficult to even supply high-quality aviation fuel. How to get the aircraft back to Chengdu in the future is another problem."
“Moreover, if Factory 132 is really damaged by the flood, even if the prototype is retained, the losses to our country’s aviation industry will probably not be small.”
Obviously, this is a Dilemma.
In the final analysis, facing a natural disaster of this level, it is impossible to have a foolproof strategy. You can only choose one with relatively small risks.
In the next nearly half an hour, everyone put forward one idea after another, but in general, they were not more stable than the two reported by Yang Baoshu.
But Chang Haonan never spoke. In fact, after learning about the precipitation situation there from Sun Huizhong a few days ago, Chang Haonan has been thinking about whether there are any solutions.
For flood control and disaster relief, the most useful thing is of course the reservoir.
The second is large construction machinery.
It would be better to have a heavy helicopter.
But these things obviously cannot be put together within a week or two.
What he uses is cheating, not magic.
In the absence of these equipment, traditional flood control and disaster relief...
can only be accomplished by relying on sandbags, stones and human walls.
Sandbags and rocks were used to block the flow of water, while human walls were used to slow the impact of the flood peaks upstream.
This is a method that is very effective but also extremely risky.
Not to mention a human wall that can be washed away accidentally, even carrying rocks and sandbags is an extremely high-intensity physical activity.
You must know that rescue and disaster relief will not last only one or two days.
In the case of continuous lack of rest for a long time, it is necessary to ensure the transportation speed. Many people have suffered irreparable injuries and even lost their lives.
This basic principle has not changed fundamentally even after more than 20 years, but fortunately, thanks to the development and progress of technology, the specific operating methods have improved a lot.
After brainstorming for a period of time, Chang Haonan finally thought of something that could not only alleviate the risk of waterlogging in the 132 plant, but also play a role in the process of fighting floods.
Combined flood control module.
This idea originated from the prefabricated metal flood walls used in some European countries.
However, the cost of that thing is frighteningly high, and the assembly is very cumbersome. It is impossible to install it in time when a flood comes, and the actual effect is very limited.
Therefore, while learning from ideas, China also made some improvements.
The core is actually the set of stones + sandbags.
Just the stones were replaced with specially designed steel column-slab structural modules, and the sandbags were replaced with expansion bags filled with a high proportion of water-absorbent materials.
When on the ground, the size and weight are very light, and a strong man can even carry 10-20 at the same time.
But after being thrown into the water, it can absorb water almost instantly, forming a blockage with a density of 1/6-1.8g/cm and a volume of 15-20 liters (basically the same as a sandbag).
In addition to the idea, there are two key technologies for this thing.
The first is to conduct fluid-structure coupling system analysis and dynamic response design on metal structural modules to achieve sufficient strength with the smallest possible weight and avoid being washed away by huge water pressure - this is almost Chang Haonan The job you are best at is not a problem.
The second is the water-absorbent material inside the expansion bag.
Chang Haonan is not a chemical engineer, but he roughly knows that it is some kind of super absorbent resin.
And the synthesis is not difficult.
Because in the past, they were directly disposed of as industrial waste.
But I really don’t know what it is exactly and where it can be produced.
However, for this kind of thing, you can definitely ask for organizational help.
"Director Ding, Minister Cao, I have an idea."
While everyone was silent, Chang Haonan finally spoke.
(End of this chapter)