911 Landing safely

Hearing that everyone began to talk about this again, Monk Chen laughed extremely arrogantly, in fact, after knowing Li Huan, Monk Chen often got this kind of surprise. Monk Chen has a lot of headaches, but these headaches will be solved as soon as they are handed over to Li Huan, as if he is confident in everything. In particular, Monk Chen felt that his matchmaking between Chen Xue and Li Huan was the most correct thing he had done in his life. Regardless of whether they are in a high position or not, whether they are poor or rich, they all hope that their families and future generations will be happy.

"So, now it seems that you Lao Chen is a really smart person, just this young man, not to mention the rest, if I have a granddaughter, I will definitely marry my granddaughter to him, without the slightest hesitation!" Lao Jiang laughed: "In this way, not only do I have a net worth of tens of billions, but I can also rejuvenate myself, alas, it's a pity that I am slow." ”

"Alright, okay, don't talk about this uselessness. Don't you old guys just want medicinal candy?" Monk Chen waved his hand: "I can still call the shots for him in this matter, as long as we get through this crisis, I will ask him to produce a batch of your special medicinal candy for your uncles and grandfathers, so that you can also experience the feeling of rejuvenation?"

"Okay, okay, then do it!" Old Jiang rubbed his hands: "Old Song, the speed of your engineer battalion is not very good, a field airport has been repairing his mother for two hours, can you do it?" This is the plane waiting to land, if there is really a war, with your speed, your head will have already moved......

"You fart, you old ginger is fast, you go! If there is a fighter plane in the sky, I can level a field airfield in half an hour. But it's a passenger plane in the sky! Don't you know that the landing gear can compare to a fighter plane? A pit on the road can have devastating consequences. It takes three hours for the fastest quick-drying cement to withstand the take-off and landing of an airplane. Lao Song scolded with a smile: "Okay, okay, everyone don't make trouble, hurry up and get this plane down, that's the most important thing for us...... Lao Chen, you said, don't regret it when the time comes, we're waiting to get those special medicinal candies!"

……

Li Huan didn't know what was going on in the terminal, but now listening to what Chen Lao meant, everything had been done, so Li Huan also relaxed.

After he took off the headphones, he began to hover in the air, then cleared his throat, with a bit of aura in his voice, and said clearly and crisply: "Hello everyone, I am your captain Li Huan, and now we have arrived at the scheduled location." I'm now waiting for the next instructions from the military, and when they find us a place to land and send a signal, we can descend in the direction they indicated...... It was definitely a bit bumpy on the descent, and the various electronic systems on our plane were out of order, and I can't even turn on the safety drive right now, so it's best to keep your seat belts on. ”

After Li Huan finished speaking, there was no movement on the passenger compartment, as if no one heard Li Huan's words. But Li Huan knew very well that the words he had just said were aura, and on such a small plane, they would definitely be able to be clearly delivered to everyone's ears. Li Huan subconsciously looked back, and saw that everyone was sitting in their positions, their faces were not very good-looking, and many people tightly tied their seat belts around their waists, and they were the tightest kind, for fear that the seat belts would fall off.

Li Huan thought for a while, suddenly realized, he cleared his throat again, and added: "You may not understand what I said just now, right? Then I will translate it for you now, which means that our troops are coming to pick us up, and we can go home safely, and here I will guarantee you that none of you will have problems! And as soon as we land, our loveliest soldiers will immediately come to meet us, and you don't have to worry about the rest at all!"

After Li Huan finished speaking, he saw that the passengers behind him did not react, he only thought for a moment and understood, what he just said was too professional, and no one could understand it. Actually, this is not too professional, but it is important to consider that these passengers have gone through so many bumps - even if all the crew members on the plane have passed through strong winds and waves, but compared to the natural disaster kidnapping, sitting on a plane with an unknown course and a big problem is definitely the most terrible thing they have ever experienced before. And sitting on a runaway plane flying to an unknown destination, this is different from other dangers, other dangers can always think of the result, and this thing is unexpected, you don't know where the plane is flying, you don't know when he has a problem, and I don't know if I can go back alive...... In short, every minute of sitting on the plane is almost torment.

After this kind of ordeal, they naturally couldn't understand the clichés Li Huan said. Because after people have been in high tension for so long, their brains are always a little hypoxic, and they naturally don't react so quickly - what kind of plane is forced to land on the spot, what is the signal flare to land, etc., if the meaning of this kind of words is to turn around and listen, they naturally did not react at the first time. But when Li Huan said that everyone could land home safely, and there was an army over there to pick them up, everyone reacted immediately.

"Are we safe?" The first to stand up was Liu Qianhuan, he sat at the front, closest to Li Huan's cockpit, when Li Huan finished speaking, he suddenly unbuckled his seat belt and stood up, looking at Li Huan with stunned eyes: "Brother Huan, my dear Brother Huan, you can lie to me, don't tease me, what did you just say? Can you say it again? You just said that we can go home safely and land safely, right? I heard you right?"

"That's right, you heard it right, I repeat it again, we are all safe, we can go home safely, although we are still hovering in the sky, but there is a whole army down there to protect us, you think about how many ways our army has, as long as they choose the place, it must be a safe place. In fact, after Li Huan himself had a long and tense flight, he himself was a little tired, and after he shook off the sweat on his hands, he smiled: "But didn't I just say you guy, everyone had better fasten their seat belts at all times, otherwise once we receive the news that we are going to land, I am afraid that we will throw you out of the plane." ”

"I'm! I'm! I'm!" Liu Qianhuan's eyes widened suddenly: "It's really safe, we're really safe, I'll just say it, it must be safe to follow Brother Huan, no matter what happens, as long as our Brother Huan is there, there will be no danger after all!" It's so exciting, it's too exciting, you don't know, when I just heard that the plane was out of order, I was scared, but I still have a belief in my heart, that is, our boss is sitting in front, and we will have nothing to do, which once again proves that my guess is right! And the facts have once again proved that Brother Huan is indeed omnipotent!"

After speaking, Liu Qianhuan sat down, tied into his seat belt, held the seat with both hands, and sat down in what he may have been the most standard sitting position in his life, but after sitting down for a few seconds, he felt that something was wrong-why was he so excited by himself, and what was the matter with the rest of the people? He subconsciously looked at the stewardess beside him and poked her with his finger: "Hey, didn't you hear? We're safe!"

"Safety...... Are we safe?

Sitting next to Liu Qianhuan was the flight attendant on the plane. When Li Huan spoke to the back, the two eyes of the flight attendant were wide, as if she didn't know where the focus was. Liu Qianhuan stood up and talked back to Li Huan, her eyes seemed to come back to her senses, when Liu Qianhuan poked her shoulder, the stewardess seemed to have just come back to her soul, as if a drowning person suddenly breathed in fresh air, "hiccup", first took a breath of air, and suddenly cried: "We are safe, we are really safe! God, I thought I was going to die on the plane at such a young age!"

From the beginning, the stewardess had always looked like she was knowledgeable, but she could think that he could suddenly burst out with such a howl, and this howl was extremely penetrating, from the front of the cabin to the cabin, and finally almost everyone heard his howl—how to say, the soft voice at the beginning was completely gone, and this howl was no better than killing a pig.

But it was such a good voice that woke up the entire crew.

"Go home! We can go home safely! Oh my God, when I heard about the plane breakdown, I really didn't know what to do, I even wrote my suicide note, and I put it in my own wine jug, in case we came to look for our corpse recently, I should be able to see my wine jug, so that my family can find my suicide note! Damn, what kind of suicide note, I'm going to tear him up right now!"

"Oh my God, Nan Wu Guanyin Bodhisattva, we can still survive in this situation, my God, my God, I don't know what to say now, come and pinch me, see if I'm dreaming!"

"I knew we were going to survive...... To tell you the truth, I must write this script well when I go back, and there is probably no other setter in this world who is more difficult than us! If we make this movie, I think it will be even better than this movie...... If I wasn't the guy who was the setup assistant myself, I wouldn't believe anyone who told me that a film crew would go through these things!"

It seemed that it was the voice of the flight attendant, and everyone woke up, and suddenly, the cabin erupted in a carnival-like shout. You change cars and listen naked, smile faintly, and let them vent. After all, just like I don't know who said it just now, if it weren't for my own experience, no one would believe that a film crew would encounter so many difficulties...... However, it is a bit nonsense to say that writing this thing into a script and making it is better than the movie itself, Li Huan also pointed to this movie to harvest a wave of faith points.

But what he said is really right, if it weren't for his own experience, Li Huan wouldn't believe that making a movie could be so thrilling, he almost made an action-adventure movie.

Of course, no matter what direction you look at, Li Huan has made money this time, although danger is danger, but behind every danger is Li Huan's big money.

Let's talk about the hotel hostage kidnapping incident, that's because Li Huan gave away the people's nest and took away all the last bit of start-up capital left by the family, so Jefferson came to Li Huan so angrily. But the matter was eventually resolved without injury, and all the hostages were saved. The most important thing is that Li Huan successfully brought all the treasures he got back to China, these things are in Li Huan's virtual space, without Li Huan's consent, you will kill Li Huan, and you won't be able to get these things.

As for Jefferson's angry cursed plane, he wanted to make this flight fall with an established fact, although it was dangerous, but Li Hua managed to control the plane. And this time he was even more surprised, if it was a spiritual and cultural victory to take away all the bottles and cans in the sunset note earlier, then Jefferson exposed this matter to every media in the world in order to put pressure on my country, and that was Li Huan's unexpected joy. After the media exposed, since almost all countries in the world have signed an agreement with our government to jointly explore that world, it is natural to push this matter in a good direction. Now those media report Li Huan's deeds, and Li Huan himself blushes when he sees it, so he has gained a wave of explosive faith points that he has never seen before with this incident - this incident may not even be expected by Jefferson himself, he originally wanted to put pressure on my country, and by the way, Li Huan panicked, but he didn't expect to give Li Huan a big gift.

Generally speaking, behind every danger Li Huan encountered this time, he made a lot of money, and what else is there to complain about? As long as the plane lands, all this will fall to the dust, and he will soon be able to go home.

Li Huan listened to the bursts of cheers that erupted in the cabin behind him, and was planning to have a good meal after landing, and then put all these national treasures into his museum, when a shout came out of the headset: "All-channel public signal, here is the all-channel public signal, call CA7071 Bombardier airliner, we are the signal transferred from the tower, can you hear it?"

Li Huan hurriedly grabbed the headset: "I can hear it, this is the CA7071 Bombardier airliner, I heard it very clearly, what are the instructions?"

In fact, Xiao Fei can establish more than one signal channel, but if Xiao Fei now establishes hundreds of signal channels at the same time, then Li Huan will not be able to explain why he can still have such a smooth conversation when all the electronic components of the aircraft are out of order. Anyway, the signal from the tower is the same - this has the advantage that the tower can also hear their conversations.

"Hello, it's good to hear your voice, we've been waiting for you down for a long time, we're the troops building a field airfield below! We've been watching your figures in the sky while we're working below, and I can greet you on behalf of all of us! We've all known your deeds, and the spirit of choosing a primeval forest area to make a forced landing in order to avoid a crowded city is worth learning from each of us!" the voice said. But don't worry, we've built a good quality runway for emergency preparedness, and I'll send you the coordinates now and wait for you to land. Next to the runway, we have prepared first aid equipment and we will definitely do our best to get you to land safely...... Please look at our light signs!"

"Received!" After Li Huan finished speaking, he began to look out of the cabin, and after the plane circled in a few directions, Li Huan found a place.

It was a canyon with cliffs on both sides, but in the middle was a flat terrain about a kilometer wide. This canyon plain stretches out for more than ten kilometers and is simply a natural airport. There was a thin layer of fog in the canyon, and the ground was faintly invisible, but several lights could be seen from the ground.

On both sides of the canyon plain, every five hundred meters or so, there was an extremely strong beam of light shining on the sky, which was probably to tell Li Huan the location of the runway on the ground.

Sure enough, Li Huan was thinking about it, and a voice came from the headset again: "This is the best place we can find, I'm very sorry, but I can guarantee that the ground of the field airport here is very solid, which can carry the take-off and landing of large aircraft." It's just that there's a bit of fog in the canyon right now, but we've turned up the lights. I believe that since you have the piloting skills of refueling in the air with passenger planes, it is not difficult to make a blind landing in the fog. The runway is three kilometers long in total, starting with the first searchlight and ending at the last, good luck to you!"

……

After flying five or six times around the sky in this ill-fated Bombardier airliner, Li Huan finally found a perfect angle. Since there is no positioning device on the ground, it is necessary to find a perfect entry angle. In fact, many people don't know that in the process of piloting an airplane, the most difficult thing is not to fly into the sky, but to land the plane safely from the sky.

"Don't worry about you when you make a blind landing, just aim at those beams and slowly press down on the plane. The voice of the airport tower came from the headset: "Actually, I don't need to tell you about your flying skills, I know this, so I wish you good luck next." Don't be nervous, don't be nervous, aim for the angle and slow down. ”

"I'm not blind either. After Li Huan adjusted the angle of the plane, he began to descend in a circle: "Well, theoretically, it doesn't count, I'm probably a more advanced blind landing than blind landing haha...... At least I can look at the dashboard when I'm playing mahjong, and now I don't even have to look at the dashboard, and I can see a fart out the window on the plane. But thank you for your encouragement, don't worry, since I can complete the work of refueling in the air, landing will be a piece of cake for me - as long as it is a temporary airport. ”

Blind landing is a level that a high-level captain must have.

For example, China's civil aviation requires that since January 1, 2014, the captains of flights from the top ten airports in the country in passenger throughput to the capital airport must have the qualification of Class II blind landing operation. This measure aims to improve the efficiency of flight operations in low-visibility weather conditions, but many people do not understand the concept of "blind landing" in the aviation field and intuitively understand it as "flying the plane with closed eyes" and "blind landing", which has led to great doubts about the safety of this practice.

"Blind landing" is just a paraphrase or colloquial name, but in fact this landing method involves a complex and sophisticated system.

InstrumentLanding System (abbreviated as ILS), often literally translated as instrument landing system or instrument landing system, is currently the most widely used aircraft precision approach and landing guidance system. Unlike the pilot's visual approach, the Instrument Landing System is considered to be an "eye-independent" landing, hence also known as a "blind landing", because it guides the aircraft to approach and land under low weather standards or when the pilot cannot see the runway with the naked eye.

The instrument landing system aircraft provides information on the heading lane, glide path and distance from the landing end of the runway, and is used to guide the aircraft to approach and land according to the instrument instructions under complex meteorological conditions. Including heading beacon equipment, gliding beacon equipment, pointing beacon equipment and rangefinder and associated monitoring system, remote control and status display system. Its mode of action is to realize the navigation path and glide path guidance by two radio signals transmitted from the ground, establish a virtual path from the runway to the air, and determine the relative position of the aircraft and the path through the on-board receiving equipment, so that the aircraft flies to the runway in the right direction and descends the altitude smoothly, and finally achieves a safe landing.

Blind landing is not a new technology, the blind landing system is an international standard landing equipment recognized by the International Civil Aviation Organization.

Tests of the ILS began in 1929. On January 26, 1938, the Boeing 247-D of Central Pennsylvania Airlines flying from Washington, D.C. to Pittsburgh landed in a storm for the first time using an instrument landing system. Citi's Civil Aeronautics Administration approved the installation of the system in 6 locations in 1941. In 1947 the ILS was recognized by the International Civil Aviation Organization (ICAO) as an international standard for landing equipment. Instrument landing systems all over the world are based on the technical performance requirements of ICAO, so that any aircraft equipped with ILS can receive a uniform technical service at any airport equipped with ILS in the world.

Under normal circumstances, the pilot is not "completely blind" during the blind landing process, and will not allow the aircraft to "land automatically".

In the harmonized standards of the international civil aviation industry, blind landings are divided into three categories. The landing standard for a blind landing is that the visibility in front is not less than 800 meters or the runway sight distance is not less than 550 meters, and the minimum landing standard decision height is not less than 60 meters (if the pilot can see the runway clearly at this altitude, he can land, otherwise he must return to flight.) )。 The landing standard for the second type of blind landing is that the visibility ahead is not less than 400 meters or the runway sight distance is not less than 350 meters, and the minimum landing standard decision height is not less than 30 meters. The three types of blind landing are subdivided into three levels: A, B and C, and only the standard of the three types of C is that the visibility and decision height in front are 0 meters, which is the real sense of "full blind landing".

When the aircraft arrives at the destination airport for landing, there is a process of switching from automatic automation to manual control by the pilot before grounding, and the timing of landing is determined by the blind landing category standard. Generally speaking, the first type of blind landing system is to take manual driving at an altitude of 60 meters, the second type of blind landing system is to manually drive at 30 meters, and the highest level of the third type of blind landing system (C level) completely relies on instruments to achieve aircraft landing (as of the end of 2013, although the airborne equipment of the vast majority of mainstream civil aviation aircraft has the ability to operate "three types of blind landing", ICAO has not approved this level of operation).

The conditions for operating Class II blind landing are extremely harsh, and there are strict airworthiness standards for airports, aircraft, and crews.

The type of blind landing of the aircraft is determined by the support capacity of the airport equipment, the technical condition of the aircraft, and the comprehensive technical level of the pilot. At present, all Chinese commercial pilots have the first class of blind landing qualifications, and the second and third categories require special training. It is worth noting that blind landing requires the entire crew to have the ability to cooperate, and it is completed by at least two people, so this type of training is not for individuals and needs to be carried out together.

In addition to the requirements for pilot qualifications, blind landing has requirements for both airports and aircraft. The civil aviation authorities of all countries need to examine and approve their civil aviation aircraft and airport equipment to determine whether the aircraft or airport has the conditions for blind landing. The blind landing system places high demands on instrumentation and airport clearance, and if the radio indication signal from the system is discrewed, the aircraft may re-land or deviate from the runway. The accuracy of the first type of blind landing is not high, and the occasional vehicles and uneven ground near the runway can be allowed, and the second and third types of blind landing have higher requirements for the site situation, ground navigation facilities and operation system. The blind landing equipment has high precision, the price is also very expensive, and the requirements for daily maintenance are also very high, and the second type of blind landing requires a flight verification every four months, and the accuracy of the equipment is checked by a special aircraft.

To sum up, in terms of technical aspects, the second type of blind descent has mature technical standards, strict control procedures and other aspects of safety guarantees. However, it should be pointed out that the safety of blind landings is inseparable from the level and ability of pilots, and the comprehensive management and control capabilities of aviation safety and risk systems, and whether China's civil aviation can achieve a win-win situation of efficiency and safety after the implementation of this major initiative may need more time to prove.

Li Huan doesn't belong to one category, nor does he belong to four categories - he belongs to the fourth category.

The fourth category of fierce generals is generally not included in the training of civil aviation areas, but is a skill that only pilots can master by professional military fighters. And this skill does not require every pilot to master, those ace pilots will choose to take it. In the first and second types of mahjong, the most important thing is to coach the instrument, that is to say, all the instruments are input into the microcomputer of the aircraft after the unified data, and the blind landing device at the airport and the receiver on the aircraft judge the status of the aircraft, and then feed back all the data to the pilot - just like Xiaofei is prompting Li Huan to go up and down, left and right, the pilot at that time can follow the prompts of the aviation computer to operate the aircraft, in fact, there is no need to look out the window.

In fact, many pilots can be assisted by computers as long as they have enough experience and are not chaotic, even if they do not look outside, they can land the aircraft safely, which is the advanced point of science and technology. But if you were asked to look out the window without any other computer assistance, it would be a disaster. That's why, when the media heard that all the electronic components of the Bombardier plane were out of order, they were sure that it was only a matter of time before the plane fell, but the positive comments led by governments accounted for the majority, and these rational analyses were suppressed.

Because no one believes that a person can rely on sensation – yes, after all the electronic components have failed, it can only be done by feeling, and no one believes that a person can rely on sensation to fly an airplane over thousands of kilometers and then land accurately on an airport. But it turns out that you have already done the same as paying back the money, when he was in the air without fuel, he even completed the action of refueling in the air, so people's expectations for him to land safely on the runway are still very high - no one dares to pack a ticket 100%, because there is no instrument, no computer calculation, all based on feeling to blind landing, this kind of landing known as the fourth type of blind landing is generally known in the industry as a suicide landing.

Think about it, a 10-ton object falling from the sky at a speed of 300 kilometers - you must maintain an airspeed of 270 before the plane lands, which is a lot different from the speed of an airplane that usually travels at seven or eight hundred in the sky, although it sounds like a lot of difference, but the speed is still fast. At this speed, every moment of contact with the ground is very dangerous, and if you don't get it right, the plane will be destroyed and people will die. Think about those cars running on the highway, the speed is only one hundred and twenty-three per hour, a bad operation is the end of the car crash, and the landing plane is heavier, faster, under the acceleration of gravity, a negligence will cause a devastating disaster. For example, the captain judged the height of the ground inaccurately, and pressed down the nose of the plane in advance...... The difficulty is as high as you can imagine.

Especially in the wild.

First of all, the length of the track is limited, and the braking distance may be longer due to overweight after landing. Then, braking hard for a long time may overheat the brakes or even burn the tires. Complex, the plane can be in the air because the lift is strong enough against gravity. Lift is brought about by the speed of the air moving relative to the wings of the aircraft. When the plane descends from a height, the gravitational potential energy is converted into kinetic energy, and the plane accelerates. Acceleration means increased lift and more difficult aircraft landing control. Generally, controllable aircraft will try to circle a few times and slow down slowly. Otherwise, the pilot will have to use the dangerous attitude of flying at a high elevation angle to forcibly reduce the speed.

In short, everyone was sweating.

But when Li Huan was hovering in the sky, he felt okay.

Indeed, if there is no electronic instrument to judge the current attitude of the plane, then Li Huan will have a headache to death, because in that state of high speed and high weight, as long as there is a little problem, it is a big problem. But Li Huan doesn't have a headache about this, because he has Xiao Fei's help, and Xiao Fei's two sub-machines are now eyes. He put one sub-plane in front of the plane, and one sub-aircraft on the landing gear, and the data collected by the two sub-planes together was sensed to Xiao Fei, and Xiao Fei then calculated the parameters for landing - Li Huan still followed the steps of the parameters. How to say it, although there is no computer and various data on the plane now, outsiders see Li Huan's landing as a danger of death, but in fact, with Xiaofei's assistance, Li Huan can even land the plane more smoothly.

No matter how awesome the on-board computer is, it will not be faster than Xiao Fei's computing speed, and Xiao Fei can even give real-time operation tips after collecting enough information. Then with Li Huan's reaction speed, with the cooperation of both sides, it was even faster than the speed of the on-board computer - so when everyone nervously watched the plane piloted by Li Huan circling in the sky to find an angle, and everyone pinched a cold sweat, Li Huan was actually still chatting with Xiaofei!