According to the original plan, in the next few days, Chang Haonan should work with Sun Huizhong to design the DSI inlet applied to the trainer aircraft and the overall structure of the aircraft as soon as possible, so that Guihang can start manufacturing the first prototype as soon as possible.

However, the plan could not keep up with the change.

His previous worries are gradually turning into reality -

With heavy rains falling across most of the country for several days, it seems that the super flood, which is almost unprecedented in scale and scope, is really ahead of schedule......

However, what really made Chang Haonan realize the severity of the situation was that on a night when it was raining moderately as usual, he was taken to an urgent small-scale internal meeting of the Commission of Science, Technology and Industry for National Defense.

It's not as formal as last time, but the specs are even higher.

Liang Zhuoping took out a piece of record paper straight to the point.

Above is a summary of the call:

"According to the report of the 132 factory this afternoon, the total precipitation in Rongcheng has exceeded 550mm in the past half month. Although the plant has done its best to drain the water, the local natural water storage capacity has basically reached the upper limit, and some low-lying living areas have already seen water accumulation on the ground. ”

"According to today's bulletin from the Bureau of Meteorology, after a brief period of cloudy weather from tomorrow to the day after tomorrow, there will be at least a week of heavy to heavy rain. According to the judgment of Comrade Yang Baoshu, general manager of Rongfei, it is difficult for the 132 factory to withstand the impact of the next round of rain, and with the passage of time, the possibility of inducing geological disasters is also increasing, and the No. 01 prototype of the No. 10 project continues to be parked in the assembly workshop at great risk. ”

"So Mr. Baoshu just called us and proposed two solutions, one is to transfer the prototype to a relatively high position in the factory area, where is the position of the radar station of the militia anti-aircraft artillery battalion of the 132 factory in the past, the ground is flat and paved with cement, it should be able to hold out for another 5-7 days, but if the rain continues after a week, I am afraid it will still suffer."

"Second ......"

Speaking of this, Liang Zhuoping even hesitated for a moment before continuing to speak:

"Considering that the No. 01 prototype of Project 10 has actually had the ability to make its first flight, in order to avoid greater losses, he hopes to allow No. 01 to take off early the morning after tomorrow and transfer to a safer nearby airport for temporary refuge."

Obviously, this is definitely not optimistic news.

An aircraft that has not yet made its first flight should consider a long-distance transfer flight, or in relatively harsh climatic conditions.

The risks are not small.

And for Rong Fei to make such a shocking request, it can only show that the local flood control situation is difficult to control.

Everyone's expressions turned serious.

Although Chang Haonan has been paying attention to the precipitation situation across the country from time to time on the news these days, the application of Factory 132 has made him intuitively feel the huge threat of flooding for the first time.

After a period of silence, Ding Gaoheng cleared his throat and first opened his mouth to confirm:

"According to Yang Baoshu's meaning, the morning after tomorrow should be the last take-off window?"

Liang Zhuoping nodded:

"That's right, the weather conditions beyond that are completely unfavorable for flying, and it's very difficult to move from that radar position to the runway, basically, if you choose the first path, you will have to fight the flood to the end."

No one spoke for the next few minutes.

"Smack-"

The crisp sound of a lighter sounded in the small room.

Cao Gangchun, the head of the General Armament Department, habitually wanted to light a cigarette.

But just when the flame had reached the head of the cigarette, he looked at Chang Haonan who was sitting next to him, hesitated for a while, but still didn't light it, and stuffed the cigarette back into the cigarette case:

"Comrade Xiao Chang, you participated in the ground test of the No. 01 prototype throughout the whole process, I would like to ask, do you think this aircraft currently has the ability to carry out long-distance flight transfers?"

The latter bowed his head and muttered for a moment:

"Some of the hidden dangers found in the previous ground test process have been eliminated, and the design of the whole aircraft has also been completely verified, so I don't think there is a problem when it comes to long-distance flight."

However, before Cao Gangchun could speak again, he continued to add:

"But the problem is that first of all, there is only one prototype of Project 10, and other related auxiliary equipment is still in the process of research and development.

"First of all, the No. 01 prototype is now not even used in the auxiliary fuel tank, considering that some fuel should be set aside for backup when landing, the safe transition distance may not exceed 1000 kilometers, this distance, to the west is the plateau, AL31FN's high plateau take-off and landing ability has not been verified, to the south to the east, the risk of flooding is greater than that of Rongcheng, then it can only go to the northwest, and the distance is very extreme, and the plane can not land at the civil aviation airport."

"Secondly, even if the transfer passes, the local area will inevitably not have the ability to maintain and guarantee the domestic third-generation fighter, and even the supply of high-quality aviation fuel is very difficult, and how to get the aircraft back to Chengdu in the future is another problem."

"Moreover, if the 132 factory is really damaged by the flood, then even if the prototype is retained, I am afraid that the loss caused to my country's aviation industry will not be small."

Obviously, this is a dilemma.

In the final analysis, in the face of natural disasters of this level, there is no one that is foolproof, and you can only choose one with relatively little risk.

In the next nearly half an hour, everyone put forward one idea after another, but in general, they were no more stable than the two reported by Yang Baoshu.

And Chang Haonan never spoke.

In fact, after learning about the precipitation over there from Sun Huizhong a few days ago, Chang Haonan has been thinking about whether there can be any solution.

Of course, the most useful thing for flood prevention and disaster relief is the reservoir.

This is followed by large construction machinery.

It is better to also have heavy helicopters.

But it's obviously not going to come out in a week or two.

He's driving, not magic.

In the absence of these equipment, the traditional flood prevention and disaster resistance ......

It can only be done with sandbags, rocks, and human walls.

Sandbags and stones are used to block the flow of water, while human walls are used to slow the impact of upstream flood peaks.

It's a very effective but also risky approach.

Not to mention a human wall that can be swept away by water if you are not careful, even carrying rocks and sandbags is an extremely high-intensity physical activity.

You know, disaster relief doesn't last just a day or two.

In the case of a long continuous lack of rest, it is necessary to ensure the speed of transportation, and many people have suffered irreparable damage 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 means of operation have improved a lot.

After a period of brainstorming, Chang Haonan finally came up with something that could not only alleviate the risk of waterlogging in the 132 plant, but also play a role in the flood fighting process.

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 scary, and the assembly is very cumbersome, and it is impossible to install it in time when the flood is coming, and the actual effect is very limited.

Therefore, while learning from ideas, Huaxia has also made some improvements.

The core is actually still a set of stones + sandbags.

The stones were replaced with specially designed steel columns and slab modules, while the sandbags were replaced with expansion bags filled with a high percentage of absorbent material.

When on the ground, the volume and weight are very light, and a middle-aged male can even carry 10-20 at the same time.

However, after being thrown into the water, it is able to absorb water almost instantaneously, 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 analyze the fluid-structure interaction system and design the dynamic response of the structural modules of the metal to achieve sufficient strength with the smallest possible weight and avoid being overwhelmed by the huge water pressure - this is almost Chang Haonan's best job, and it is not a problem.

The second is the absorbent material inside the expansion bag.

Chang Haonan is not a chemical engineering professional, but he probably knows that it is some kind of superabsorbent resin.

And it's not that hard to synthesize.

In the past, it was disposed of as industrial waste.

But I don't really know what it is, and where it can be produced.

However, for this kind of thing, it is entirely possible to ask for organizational help.

"Director Ding, Minister Cao, I have an idea."

Taking advantage of a moment when everyone was silent, Chang Haonan finally spoke.

(End of chapter)