Rebirth 1975: Tore up the call-back order at the beginning

early morning!

Zhou Yang was woken up early by the staff of the project department, because not only were they going to arrive at the military's secret experiment base today, but they also had important tasks to deal with, so the plane took off at [-]:[-] in the morning bell.

In order not to delay the take-off of the plane, all the staff got up early, and after eating, they went straight to the military airport in the suburbs under the escort of military vehicles.

On the way, Zhou Yang felt very anxious.

He is very clear about what will happen next. If the normal historical trajectory is followed, except for him, Zheng Aiguo and Liu Yunlong, the rest of the people on the bus will die for the country today.

And the reason why he insisted on coming was to save the lives of these people.

It's just that Zhou Yang is not sure if he can persuade Nie Nansun and others to ground the plane or change to another plane.

If they listened to his advice, that would be fine, but what would he do if they didn't?

For a moment, Zhou Yang frowned, his expression a little serious.

Seeing Zhou Yang like this, Zheng Aiguo was a little puzzled, and couldn't help but ask, "Who provoked you early in the morning?"

"What?"

Zhou Yang was dumbfounded by Zheng Aiguo's question!

"I said, what are you doing with your drooping face? People who don't know think someone has offended you?" Zheng Aiguo said with a smile.

"No, it's just that I didn't sleep well last night, and now I'm a little dizzy!"

"Stayed up late?"

"No, a little insomnia!"

"I didn't sleep well either. I'm used to sleeping on the kang, and I'm really not used to that kind of soft bed!" Zheng Aiguo said with deep sympathy.

"I don't know, I just can't sleep..."

While chatting, the bus soon drove into the military airport in the suburbs.

When everyone got out of the car, they saw a medium-sized passenger plane parked at the airport.

After seeing this plane, Zhou Yang couldn't help but tremble in his heart.

In front of him was an Il-14M airliner, and Nie Nansun and others were also flying this type of plane when they died. As expected, it was the one in front of them.

伊尔-14型飞机是毛熊伊留申设计局在伊尔一12型运输机基础上，改进设计的活塞式双发运输机。1950年7月15日首次试飞，1954年底投入毛熊民航航线使用。

伊尔-14M型是伊尔-14型的延长版，它的载客数是伊尔-14型的2倍，为36名。

In the late 50s, we imported a large number of this type of aircraft from Mao Xiong to replace the old transport aircraft at that time.

At that time, domestic transport aircraft were old and of various models, including 46 American C-28 transport aircraft and 47 C-3 aircraft, which would soon be scrapped, and several Il-12 and Li-2 aircraft would also be scrapped.

In order to maintain the size of the transport force of a transport division and a transport regiment at that time, it was urgent to order a batch of transport aircraft from abroad. After investigation, it was considered that the Il-14 aircraft was very suitable for us in terms of performance and price.

Ever since, our country imported 1956 Il-1960 aircraft between 55 and 14, including passenger and cargo aircraft, and the one in front of us is obviously a passenger plane.

Due to the urgency of time, Nie Nansun ordered everyone to board the plane immediately after everyone got off the car, and the crew was ready to take off.

However, when everyone was busy preparing to board the plane, Zhou Yang unexpectedly went around to the rear of the plane and carefully observed the plane.

Although Nie Nansun and others saw this scene, they didn't say much. They thought that Zhou Yang had never seen this kind of aircraft before, and they became curious. This kind of thing is really normal for a researcher.

However, they didn't know that the reason why Zhou Yang did this was not out of curiosity.

It's just an Il-14 transport plane. Zhou Yang really doesn't like it. No matter if it's a domestically produced C919 or Yun-20, Zhou Yang has seen it before, and even participated in the design of the radar part. How can he like this kind of aircraft? Antiques from 20 years ago.

He was just looking for evidence to convince Nie Nansun and others. After all, if he wanted the plane to be grounded, it would be useless to just talk about it, and he had to come up with enough convincing evidence.

And the evidence he wanted was on the surface of the plane, especially the wings and tail.

Due to the targeted observation, Zhou Yang soon discovered the problem. He found a thin layer of frost under the wing of the plane.

In fact, it's not just the wings, the entire fuselage is covered with snow-white ice crystal particles, as if a layer of shiny paint has been applied to the surface of the fuselage, which is quite beautiful.

Zhou Yang's heart was both chilled and excited by this discovery. The chilled thing was that the plane's wings were actually icy, but the exciting thing was that with these discoveries, he had a reason to stop the plane from taking off.

And just as Zhou Yang's thoughts were racing, Nie Nansun's voice suddenly came from the plane: "Hurry up and board the plane, the plane is about to take off!"

Hearing the sound, Zhou Yang immediately walked to the door of the plane, and said to Nie Nansun at the door: "Old Nie, this plane cannot take off!"

Nie Nansun was taken aback for a moment, then hurriedly asked, "What's wrong?"

He knew Zhou Yang's character and temper quite well, and he knew that he was not the kind of person who would just look for trouble, so there must be a reason for saying this.

"The wing of the plane is icy!"

Hearing this reason, Nie Nansun's face changed drastically.

Icing on the wings of an aircraft is no small matter. Icing can cause the streamlined shape of the lifting surface to change into a bluff shape, which will cause vortex separation.

And the ice on the leading edge of the wing will significantly affect the original aerodynamic performance, resulting in a significant reduction in lift, a substantial increase in drag, and a nonlinear change in moment.

In addition, icing also particularly affects the stall characteristics of the aircraft. After icing, the aircraft's stall angle of attack advances, and the maximum lift coefficient also suffers a large loss. This makes the red line of flight greatly lowered. Serious consequences of aircraft crash and death.

Thinking of this, Nie Nansun didn't dare to neglect, and immediately got off the plane quickly.

"where is it?"

Zhou Yang didn't say much, and directly took him to the wing of the plane.

Nie Nansun took a closer look and found that the ice crystal particles on the wing were obvious, more like a layer of frost.

"It should be just a layer of floating frost, it shouldn't be too big!"

It is almost late November now, and the local temperature at night is below minus [-] degrees.

In addition, it is still early in the morning, and it is normal for the surface of the aircraft to have frost.

When Zhou Yang heard Nie Nansun's dismissive words, he immediately said, "Look at the flat tail again!"

Later, Nie Nansun came to the tail of the plane.

Compared with the wing part, the ice on the flat tail was more obvious, which made Nie Nansun couldn't help frowning.

He is well aware that when the flat tail is icy, it will have a greater impact on the handling characteristics.

Because the horizontal tail of the aircraft is a negative-lift airfoil, it provides the aircraft with a nose-up moment to balance the nose-down moment generated by the main wing during flight.

Due to the smaller chord length and smaller head radius of the flat tail airfoil, the accumulated ice shape is larger than that of the main wing.

When the horizontal tail with ice is working at a negative angle of attack, a large flow separation will occur on its lower surface, which will affect the trimming ability of the aircraft.

Seeing that Nie Nansun's face finally changed, Zhou Yang immediately said: "This plane's wings and tail have obvious icing. I have reason to suspect that its de-icing system is malfunctioning, so I think this plane The plane is not fit to take off right now!"

Nie Nansun hesitated instantly!

He understood what Zhou Yang meant. The impact of icing on the flight of the plane should not be underestimated. There are too many examples of planes crashing due to icing in foreign countries.

Foreign countries have conducted special aircraft icing tests, and the results show that icing increases flight resistance by 81%, and pilots feel that the entire aircraft is about to lose control.

But if this plane can't take off, they probably won't be able to reach the northwest today, after all, there is a special shortage of planes these days.

They applied for this Il-14 in advance a few days ago, where did they go to change the plane all of a sudden?

Seeing his hesitation, Zhou Yang immediately said, "Mr. Nie, all of us on this plane are top-notch scientific researchers. Once there is an accident, the impact will be too great!"

Hearing this, Nie Nansun's face changed again, and he said immediately: "You are right, the plane has suspended take-off, I will find a way to send another fighter plane over!"

"Row!"

.......

PS: Please ask for "Generating Power for Love", it is now No. 15!