Chapter 916 A Glimmer of Hope in the Plane Crash!
Chapter 918 A glimmer of hope in the air crash!
At an altitude of 51,000 feet above the ground.
Two Gulfstream G650s were moving at full speed at Mach 995, just below the speed of sound.
Gulfstream Aerospace has a motto: Time is money, and the time saved is the wealth earned for customers!
The G650's flight speed, just below the speed of sound, far exceeds that of ordinary passenger planes.
It can save users more time for business negotiations during the trip.
Especially for big guys like Marx who really make millions of dollars a minute.
Time is particularly important.
There was laughter in the cabin where Luo Xuning and his apprentice were.
Except for him and Mu Wei, the rest of the people were riding this luxurious private plane for the first time.
Although Gao Yaling and Shi Mingsheng were worth tens of billions, at most they would buy first-class seats when traveling, and they were not so extravagant as to buy private planes.
Zhao Rui only took ordinary planes when traveling in a year. In order to save money, she usually bought economy class.
Du Enya took a plane for the first time in her life. She was a little nervous when she took off. When the plane broke through the stratosphere and bumped, she was so scared that her face turned pale, fearing that she would fall.
In the high-speed flight close to the speed of sound, it took more than an hour for the plane to fly out of the border and into the territory of Russia.
Zhao Rui looked at the route map displayed on the tablet and asked curiously: "Master, why doesn't this route go directly east across the Pacific Ocean to the United States, but has to go around the northeast? Between two points, the straight line is the shortest, isn't it?"
The United States is located between 25 degrees north latitude and 49 degrees north latitude, and 70 degrees west longitude and 130 degrees west longitude. China is located between 3 degrees 51 minutes north latitude and 53 degrees 33 minutes north latitude, and 73 degrees 33 minutes east longitude and 135 degrees east longitude.
In other words, China and the United States are similar in latitude. From the perspective of the globe, the two are almost in the same position, and the United States is due east of China.
According to the theory of the shortest straight line between two points, the shortest route is for the plane to fly east and directly cross the Pacific Ocean to reach the United States.
But in fact, when the routes of airplanes in countries around the world fly between cities with similar latitudes, their routes do not coincide with the latitude lines. They deviate to the north in the northern hemisphere and to the south in the southern hemisphere.
Therefore, airplanes flying from China to the United States deviate to the northeast to enter Russia, then fly across the Bering Strait, enter Canada, and finally arrive in the United States. It looks like a big circle.
Luo Xuning smiled and explained: "Because this seemingly roundabout route is the closest to the shortest straight line route between two points you said."
"Ah? Master, are you kidding? It's obviously a big circle, and you said this is a straight line between two points?" Zhao Rui pointed to a folded line on the tablet that looked like a paper clip, and looked confused.
The other people were also attracted by the content of the conversation between Zhao Rui and Luo Shuning. They all pricked up their ears and prepared to listen to Luo Shuning's explanation. They were also very curious about the questions raised by Zhao Rui.
Luo Xuning smiled and said, "Don't forget that the earth is a sphere, not a flat map that we usually see. If you want to show the locations of various countries on the earth on a plane, you must use a projection method.
The points originally on the sphere are "positioned" on the same plane, which will inevitably produce certain deformation and distortion.
For example, the most widely used projection method in the world is the Mercator projection, which was created by the Belgian Mercator in 1569 to solve the problem of navigation routes.
The main method is to assume that a cylinder with the same direction as the earth's axis is tangent to the earth's equator, and project the earth's longitude and latitude grid onto the cylindrical surface according to the condition of equiangularity.
Then unfold the cylindrical surface into a plane map to get a Mercator projection map. This projection method is based on equiangularity, so it is also called equiangular tangent cylindrical projection."
Zhao Rui looked at her master with admiration and exclaimed, "Master, you look so professional. Master, did you graduate from aerospace? What is equiangular tangent, Mercator projection, although I don't know what it is, What, but it feels so awesome. ”
Shi Mingsheng also smiled and said: "Indeed, I have learned a lot today. It turns out that there are so many details and tricks in the design of flight routes? I am ignorant."
Gao Yaling hurriedly said: "Don't interrupt, Master, continue to talk. You can show off these useless knowledge to your friends when you take a plane in the future!"
Luo Xuning smiled and continued to popularize science: "On the map produced by the Mercator projection, connect any two points into a straight line, and then sail along this straight line.
Whether it is land or ocean, the angle of its contour after projection will not change, so it can reach the destination without deviation.
However, the flat map under the Mercator projection will change the area of the region, and the magnitude of this change is different in different regions.
For example, the stretching amplitude of the area within the Tropic of Cancer and the Tropic of Capricorn is relatively small, but with the increase of latitude, especially the stretching amplitude of the Arctic and Antarctic regions will become larger and larger.
This also caused the area of Antarctica and Greenland in our maps under this projection to be many times higher than the actual area.
Therefore, under the commonly used Mercator projection map, the aircraft routes we see traveling along the latitude lines at mid-to-high latitudes are much longer than they actually are. It feels like a curve with a large arc. However, the actual distance is It's not that exaggerated.
For example, the route map on your tablet now looks like an exaggerated arc, but the actual flight distance is far less exaggerated than the arc shown on the route map. "
Everyone listened to Luo Yanning's science popularization, although it was a bit obscure and difficult to understand, but they all listened with interest. It was good to increase some useless knowledge during the journey and relieve boredom.
Luo Yanning reached out and took the tablet from Zhao Rui's hand, clicked on the two cities with similar latitudes, and continued:
"For example, if you fly from Beijing to Washington, USA, along the latitude line and directly east across the Pacific Ocean, the total flight length will be about 14,300 kilometers. This distance is actually not the shortest distance between the two cities."
“If we take the center of the earth as the center, connect the capital and Washington in sequence according to the Mercator projection map, and then draw an arc along the surface of the earth on the plane formed by these three points, then this arc is the same as Compared with the latitude line between the two points, judging from our inertial thinking and the Mercator projection map, we will definitely sail in a northerly direction and then "turn back".
However, we have calculated that in a fan-shaped state with the center of the earth as the dot, the arc flight distance from Beijing to Huaton is only about 11,000 kilometers, which is more than 3,000 kilometers saved compared to flying along the latitude line. "
Zhao Rui's eyes lit up and he said: "In other words, it seems that we have gone around in a circle, but the distance has been shortened by more than 3,000 kilometers?"
"Oh! I understand! The earth is a sphere, so the distance from the capital to Huaton is actually not a straight line, but a long arc!" After Luo Yanning pointed it out, Du Enya also thought of the key point.
Luo Yanning nodded and continued: "In addition, for long-distance flights, various emergencies and adverse situations will also be encountered during the air flight.
For example, extreme bad weather, unstable airflow, thunder and lightning and other meteorological factors, as well as parts failure, refueling and endurance, and other problems with the aircraft itself.
The longer the flight, the greater the chance of problems. No one can guarantee that there will be no problems during the flight if the aircraft is inspected before takeoff.
If you fly from Beijing to Washington along the latitude line, most of the earth's surface you pass through will be oceans. Once there are difficult problems to solve during the process, or there is insufficient fuel, it will be fatal to make an emergency landing or stop for refueling. question.
According to the existing northeast-oriented route, most of the surface planes we fly over are land, and only a small part in the middle is the sea area near the Bering Strait.
This route design not only reduces the length of the journey, but also provides more guarantees in terms of safety, so it has been used to this day. "
Bang bang bang, bang bang bang--!
Bang bang bang, bang bang bang--!
As soon as Luo Yanning finished speaking, there was a burst of fierce applause in the cabin.
"Master, you are so awesome! You know everything, you know everything! You know such unpopular knowledge!"
"It turns out that this is what route planning is all about. Life is really full of knowledge!"
"Another useless knowledge point has been added!"
After everyone heard Luo Yanning's popular knowledge about routes, everyone nodded with deep understanding.
Didi, didi, didi -!
Suddenly, a piercing alarm sounded in the cabin, and everyone's faces suddenly showed panic expressions, and their eyes were all looking in the direction of the cockpit!
With a bang, the cockpit door opened, and the captain of the crew stumbled into the cabin!
"Mr. Luo! Oh no! We have encountered an unprecedented disaster! Yes, unprecedented! In my more than 20 years of flying career, I have never encountered such an outrageous situation!"
The captain of the crew was a white man in his forties with 23 years of flying experience. At this moment, his face was full of panic and even a little incoherent. It could be seen that he was really scared this time.
Sudden! The plane was like a vehicle driving on a potholed road at high speed. The fuselage jolted and shook violently, and then began to fall at an extremely fast speed!
The captain of the crew who had just stepped into the cabin was not wearing a seat belt. With a bang, he hit the bulkhead above the plane and was knocked unconscious by the huge impact force!
"ah!!"
"ah!!!"
"ah!!!!"
The sudden situation made everyone in the cabin panic.
Du Enya, Zhao Rui and Gao Yaling were even frightened and screamed.
Seeing this situation, Luo Yanning's face became nervous.
The accident happened so suddenly that no one was given time to react.
At this moment, even opening the hatch to skydive has become a luxury!
Just as Du Enya had worried before, falling from a height of tens of thousands of meters, even an airplane made of steel would be smashed into pieces!
Not to mention the mortal human body!
Even if Luo Yanning's own physical fitness is over 1,000 points now, after starting the unstoppable battle, her physical fitness will reach tens of thousands.
He was not sure that he could survive this plane crash!
"Start the overwhelming state!"
The situation was urgent, so Luo Yanning immediately activated her unstoppable state, maxing out her state in order to gain more vitality.
He didn't want to die, nor did he want any of his disciples to die in this plane crash!
Bang!
There was another loud noise, and a human-sized hole was knocked out of the left wall!
A huge bird with a black body and metallic feathers crashed into the airport!
"How could there be a bird at an altitude of more than 50,000 feet!"
Seeing the big bird crashing into the cabin, Luo Xuning instantly realized that today's plane crash was not an ordinary plane crash.
Currently known, the highest flying creature in the animal kingdom is a black and white vulture, which can fly up to 11,000 meters in the sky.
More than 50,000 feet above the ground is about 15,000 meters away, which is a restricted area for all creatures. How could there be a bird!
Moreover, the size of this bird is a bit exaggerated.
The bird's body looks similar to that of an adult, and a pair of wings spread out is seven or eight meters!
The black feathers all over the body have a faint metallic luster and look unusually hard.
Flutter, flutter, flutter~!
The body strength of this big bird is also very exaggerated. It was hit from outside the plane into the plane, but there was no damage at all. It just flapped its wings a few times with a little confusion.
When it saw the people in the cabin, the big bird's eyes, which were as big as an adult's fist, first flashed a trace of doubt, and then turned into ferocity!
Fierce!
The big bird screamed, as if ignoring the air pressure, and flexibly rushed towards Du Enya, who was closest to it, and its metallic beak pecked straight at her head!
The big bird's beak was as thick and sharp as an adult's arm, and it also had a metallic luster. It looked extremely hard. If it was pecked by it, Du Enya's head would probably be pecked like a watermelon!
"The beast is looking for death!"
In an emergency, Luo Xuning shouted!
Now he didn't care about exposing his strength in front of everyone. His eyes were hot, and two hot and bright red lasers puffed, directly cutting off the big bird's head!
Flutter, flutter, flutter!
This bird's vitality was also extremely strong. Even though its entire head was cut off, it was not completely dead. After a fierce flutter in the cabin, it was sucked out of the big hole it had knocked out!
When the panicked people saw the strength displayed by Luo Xunning, they were all stunned. They forgot to shout and forgot that they were in a plane crash. Everyone's eyes were focused on him.
"Yes, there is still the master! With the master here, everything will be fine! He will definitely save us!"
As if they had a telepathic connection, several apprentices all placed their hopes on Luo Xunning.
Whoosh, whoosh, whoosh--!
The plane was still falling rapidly, and only the whistling wind and the intense heartbeat were left in the ears.
"Calm down, calm down. The more you are at this time, the more you can't panic."
"I will definitely find a way. There will definitely be a way. There is always a way out! There must be a way out!"
As if Luo Xuning heard his inner cry, the system interface popped up automatically with four prompts.
[Ding! The host is detected to be under death threat, and the special exchange option is opened! ]
[The host can exchange one of the following two skills with 10 skills or system attractions. ]
[Option 1: Flying (active skill, unlocking the flying ability, the cost is 10,000 yuan/second.]
[Option 2: A ray of hope (passive skill, resisting one fatal damage, refreshed once a month, can be stacked up to 10 times.]