Return to 2000: Captain of the Great Powers

Chapter 230 Foehn! (Please subscribe!)

When the figures of Xu Cang and Bi Lin appeared at the door of the lounge, Di Qingquan and Chen Guoli who were waiting outside immediately greeted them.

"Director Di, when can we go to Qitai?" Xu Cang asked first.

"Did you decide to go?" Di Qingquan's eyes brightened, and he said immediately: "There is no commercial air route between Shule and Qitai, so naturally you can do it at any time. I will report what time you want, and it will be approved soon. However, the only thing that needs to be paid attention to is to communicate with Qitai Airport in advance. Although the wind and snow in Qitai are extremely heavy, and the anti-icing work is not effective, it is better than nothing. It is necessary to notify the tower of Qitai Airport in advance and let them watch the landing time prepare."

"Well, that's convenient." Xu Cang thought for a while, "Why don't we go now?"

Bi Lin waved his hand and stopped him: "There is no need to be so eager. Although the Qitai Airport is not considered a high plateau, the altitude of nearly [-] feet is still a bit of a burden on the body. Xu Cang, you are exhausted today, I am afraid If you’re tired, you’d better take a day’s rest and recharge your spirits, and go tomorrow. Also, tonight, you’ll have to communicate with Guoli in advance, so as not to make any mistakes in your cooperation tomorrow.”

These words overjoyed the anxious Chen Guoli: "Can I still go?"

"Why not?" Bi Lin asked back: "However, tomorrow's verification flight will be dominated by Xu Cang, and the national strength can be assisted by you. Moreover, if you encounter special circumstances, you must listen to Xu Cang, understand? "

"Understood, understood!" I was already ready to be kicked out of the verification crew, but I didn't expect Bi Lin to agree to let him continue to participate. Chen Guoli was already satisfied, and hurriedly nodded: "I will definitely focus on Xu Cang!"

For Chen Guoli's guarantee, Bi Lin still trusts it.At least my own words are definitely very useful to Chen Guoli.

"When will we leave tomorrow?" Xu Cang asked suddenly.

"In the afternoon. The visibility at Qitai is often poor in the morning, and the sun will shine for a while before the fog clears. Let's make it in the afternoon. Besides, there will probably be a few guests."

"Guest?" Xu Cang was puzzled for a moment: "Is anyone here to observe?"

Bi Lin smiled: "That's right."

After finishing speaking, Bi Lin patted Di Qingquan: "Arrange a car to take them to rest."

"Well, no problem." Di Qingquan quickly responded.

Xu Cang looked around. When he came to the airport just now, he found a hotel near the airport. He wondered if he lived there.However, thinking about this, there was a burning sensation in his stomach, and he felt a little hungry.

When I came here, I drank some water, but I didn't eat much to eat.Since I have decided not to start today, I feel hungry after a little relaxation of my nerves.

"Master Di, the car will have to wait for a while?" Xu Cang asked.

Di Qingquan, who had just put down his mobile phone, hummed: "I called, and it will take about ten minutes. It's a temporary arrangement, so we have to wait."

"Ten minutes?" Xu Cang glanced into the lounge, saw a table with snacks in the room through the glass door, and said to Bi Lin, "Dean, may I go inside?"

"Hungry?" Bi Lin noticed Xu Cang's gaze just now, and immediately guessed Xu Cang's thoughts: "Go, eat less snacks, just fill your stomach. When you arrive at the hotel, let the hotel provide food."

Xu Cang nodded: "Yes, I remember."

With Bi Lin, Xu Cang didn't show much restraint, got Bi Lin's permission, and hurried back to the lounge.

Just after Xu Cang went back, Bi Lin suddenly heard a gurgling sound coming from beside him, turned his head to look, and happened to meet Chen Guoli whose face was flushed red.

"I'm not hungry." Chen Guoli hesitated.

Feeling helpless, Bi Lin waved his hand: "You should go and cushion it too. Don't starve your stomach when you're old."

Chen Guoli turned his head and saw that Xu Cang had already feasted in the lounge, and he couldn't help it: "Then I'll go cushion it?"

"Go!"

Now Chen Guoli didn't hesitate any longer, and went back inside, joining the ranks of dry rice.

"Teacher Chen hasn't eaten since he came back from Qitai. I'm afraid he's starving." Di Qingquan turned around and glanced at the two of them: "Teacher Chen is willing to eat now, and I'm afraid his mind is not as heavy as before."

Bi Lin squinted his eyes: "Most of the pressure is now on Xu Cang, the pressure is gone, and the mind is naturally relaxed."

Looking at Bi Lin's sideways face, which was a bit unhinged, Di Qingquan licked his lower lip, hesitated, and asked softly: "Old Bi, I don't know if I should ask or not?"

"What nonsense is that nonsense. Ask if you ask, don't ask if you don't ask, and you want me to decide for you?" Bi Lin squinted at Di Qingquan, who was a little embarrassed, and finally did not reprimand Di Qingquan: "Speak. "

Di Qingquan coughed and lowered his voice as if he had received an amnesty: "Old Bi, to be honest, I really don't understand whether it is necessary to take such a big risk to verify the single-engine procedure of Qitai Airport? After all, this matter is actually related to We have little to do with civil aviation."

"Qingquan, at the mobilization meeting a few days ago, the technician from the design institute said that the program of the military transport aircraft has been verified."

The technician of the design institute that Bi Linkou was talking about was the middle-aged man who sat with them at the meeting not long ago.Di Qingquan also remembered what Bi Lin said.It was proposed by a teacher, because the teacher heard that the single-engine program of Qitai Airport had already been verified, so he didn't know why he needed to verify it again.

The technician's answer was that in view of the difference in climb performance between military transport aircraft and civilian passenger aircraft, the procedures for the two are different and need to be verified separately.It is the military transport aircraft program that has been validated.

"Yes, I remember saying that." Di Qingquan glanced at Bi Lin's expression, and he felt some bad premonition: "Old Bi, is there a problem?"

Bi Lin sighed: "In fact, the verification effect of the transport aircraft is not good. If there is a situation, it is almost certain that the civilian transport capacity will be used, which is almost inevitable. Xu Cang is right, he has already done it once at Yulong. , Qitai shouldn’t be looking for him this time. However, for a single-engine verification, someone must actually fly it once. It’s best if there is no problem. If there is a problem, you can know the problem more clearly, at least than on the blueprint The resolution came quickly and effectively.”

"Old Bi, now that everyone is developing, there won't be such a situation, right?"

Bi Lin suddenly turned his head and looked at Di Qingquan: "It is precisely because of development that it needs to be protected, isn't it?"

"The location of Qitai is too important, so we must maintain sufficient transport capacity for this place. I just need to trouble Xu Cang." Halfway through speaking, Bi Lin suddenly felt something, turned around suddenly, and found that Xu Cang had already arrived The glass door to the living room is gone.Bi Lin immediately changed his expression and said with a smile, "How many bites did you take?"

Seemingly satisfied, Xu Cang pushed open the glass door: "The dried fruit here is really delicious, as expected, our Northwest fruit is a must."

"Turn back, something happened at Qitai. I'll give you a planeload of fruit, so you can eat as much as you want." Bi Lin said with a smile.

"A plane of fruit, then I have to resell it, don't you mind?"

Bi Lin smiled and said, "Of course it's up to you."

While talking, a minibus came from a distance, with the Shule Airport logo on the body, it should be the car that came to pick up people, and it came much earlier than expected.

"Is it this one?" Bi Lin asked.

Di Qingquan stretched his neck and took a few glances: "It should be, Mr. Bi."

After finishing speaking, Di Qingquan yelled into the lounge: "Teacher Chen, the car is here, let's go!"

Soon, the car is in place.At the end, Chen Guoli got into the car one after another, and Xu Cang was the third.However, just when Xu Cang was about to get in the car, Di Qingquan who was following behind suddenly said: "Xu Cang, you just now."

Xu Cang turned his head and looked at Di Qingquan in confusion: "What's wrong?"

Seeing Xu Cang's bewildered expression, Di Qingquan's expression froze, and he smiled and said, "It's okay, get in the car."

The airport hotel in Shule is built on the edge of the nearby lake, and you can see the sparkling lake reflected by the moonlight when you step out of the hotel gate.On a hillside above the lake, Xu Cang sat on a rock, staring at the jade plate in the middle of the lake that fluctuated with the water, in a daze.

Suddenly, a figure appeared behind Xu Cang, it was Teacher Chen Guoli.

"It's windy and cold in Shule at night, you just blow it like this?" Chen Guoli said with a smile, and sat down on a big rock next to Xu Cang.

Xu Cang's thoughts were interrupted by Chen Guoli, and he also said with a smile: "Young man, you are so angry, it's okay to blow the wind. But, Teacher Chen, you have to pay attention."

Chen Guoli patted the thick down jacket on his body: "The equipment is very complete."

After finishing speaking, the smile on Chen Guoli's face restrained a lot, and he asked slightly solemnly: "Are you thinking about tomorrow's test flight?"

"That can only be true." Xu Cang turned his head: "Is there anything else Teacher Chen needs to say?"

"Well, technically, I'm not qualified to ask you anything. However, I did not say something during the day." Chen Guoli said with worried eyes: "In addition to studying the single-engine program, I also studied the weather around Qitai Airport. and geographic data."

The corner of Xu Cang's mouth curled up: "Teacher Chen, you know astronomy from the top, and geography from the bottom."

"Oh, talent is not top-notch, so I can only work hard." Chen Guoli laughed at himself and said, "However, I have really researched something. Let's not talk about the initial obstacles, even if the program retains more The obstacle margin is very small, but it is in compliance with the regulations anyway. I want to say another thing”

Xu Cang became interested: "What's wrong?"

"When I flew to Qitai during the day, I found that although Qitai Airport has a lot of wind and snow, the temperature is low, and the surrounding area is very barren, there is a lot of vegetation at the bottom of the valley below Qitai Airport." Chen Guoli said.

The location of Qitai Airport is very special, it is on the uphill at the turn of a U-shaped canyon.Therefore, the fifth side of the approach to runway 28 is along one end of the U-shaped canyon. In the final descent stage, the plane is almost submerged in the canyon, and the mountains on both sides are higher than the plane.

Therefore, at a low altitude, if you look at the GPWS display, the aircraft is almost traveling in a red zone, and if you deviate slightly from the final track, the terrain warning may sound.

During the final approach, you enter from one end of the canyon, and if you go around, you must first maintain a heading on one side, go up to the height of more than [-] feet, and then turn right and go out along the other end of the canyon.

In a sense, the go-around procedure overlaps with the one-engine procedure at the initial stage.However, when the two engines are normal, the aircraft's climbing performance is excellent. Although the trajectory coincides with the other end of the canyon, in fact, the aircraft will soon leave the canyon terrain.

However, in the case of a single engine, the climb performance of the aircraft is severely restricted.Therefore, if you turn right after the take-off and climb phase, you will plunge into the canyon.

There is no way, the main line of Tianshan Mountain is far away on the side of runway 28, which is like a natural moat for a single-engine plane, and it is impossible to cross it.

In fact, in the single-engine program, if you can avoid turning, it is best not to turn, and it is best to climb straight up.Because once the plane turns, the lift will be decomposed, and the already poor rate of rise will be reduced by a few points.

In some extreme situations, once the aircraft turns, it may not even be able to maintain a positive rate of ascent, which is intolerable in the single-engine program.

However, the main line of the Tianshan Mountains is in front, so if you don't want to change the horizontal trajectory, you have to change it.After passing one side of the obstacle, according to the single-engine procedure, the aircraft has to turn right at a super-large angle of more than 120 degrees.

During this turn, it is nearly impossible for the airplane to maintain its upward climb.

However, according to the description of the single-engine procedure, there is no threatening terrain below the turning position, so as long as the aircraft can maintain level flight, there is no danger.More troublesome is the problem after turning.

The plane will enter the canyon after turning and leveling off, and, in view of the poor climb performance under single-engine conditions, the flight in the middle of the canyon must be maintained for a period of time.However, the program indicated that as long as the aircraft maintained a 1.2% climb gradient at this stage, there would be no terrain hazards even in canyons.

In a smooth state, under normal circumstances, a 1.2% climb gradient is absolutely guaranteed, but Chen Guoli discovered another problem, a possibility that the aircraft may not even be able to maintain a 1.2% climb gradient.

Xu Cang was not as knowledgeable as Chen Guoli, he even studied meteorological and geographical data, so after Chen Guoli said this, Xu Cang obviously didn't understand it.

"Teacher Chen, I'm angry at my lack of knowledge. I don't quite understand what you mean." Xu Cang is seeking truth from facts, and if he doesn't understand, he just doesn't understand.

Chen Guoli thought about it for a while, and suddenly pointed to the main vein of the Tianshan Mountains in the distance, crawling like an ancient monster: "In this season, the north wind is mostly prevailing. However, at this time of year, there is still a strong monsoon blowing from the southwest. Come over, but in the end it was blocked by the Tianshan Mountains."

Xu Cang was taken aback, and a little geographic information soon came to mind.Indeed, in winter, due to the existence of Mongolian high pressure, there should be more northerly winds, and southerly winds are indeed relatively rare at this time.

Chen Guoli continued: "The southwest wind is very strong, even the Tianshan Mountains can't stop it. They will climb over the entire mountain range, and then hit downhill, such as there"

As he said that, Chen Guoli pointed to another direction, where it was pitch black, only some thick shadows, Xu Cang couldn't see anything.However, Xu Cang knew what that direction represented.

If nothing else, it will be the departure side of the single-engine procedure on runway 28 of Qitai Airport tomorrow.

"Down the rapids," Xu Cang chewed slightly, and asked in an uncertain tone, "You mean Foehn?"

(End of this chapter)