Chapter 5 Questioning
Author: Charcoal grilled bamboo shoots
Chapter 5 Questioning
"Several Yifei's self-media accounts have just posted a notice, saying that they will transform into a turbojet model aircraft and will broadcast live tomorrow."
"Hasn't he already failed in his transformation once? I still remember his old model airplane, which couldn't even fly through a duct."
"I don't know. It may be to find a new engine channel or technical support."
"Damn it, everyone go watch Yifei's preview, the cowhide is blown into space."
"Go straight up to 50,000 meters in the air. Damn it, Cao Cao. This picture is so real!"
"Height 55389, speed 612 meters per second. Was Boss Yifei's head hit by a model aircraft?!"
"Old Zhang, aren't you familiar with Yifei? Do you know what's going on? @张飞 aircraft model shop"
"I don't know either. In the afternoon, Yifei contacted me and said that he wanted to transfer the accessories of the ducted model aircraft. I am planning to go over to see the goods tomorrow. Let's take a look at it then."
Penghai City, an e-commerce aircraft model factory in the suburbs.
Because of Chen Yi's sudden announcement, several members of the factory's model aircraft dealers also initiated heated discussions.
Yifei is considered to be the first batch of merchants in the industry.
From drones to model aircraft, it took four years to survive.
Chen Yi also has a certain reputation in the circle of model aircraft drones.
Although Yifei has been on a decline in the past six months due to channel and technical issues, there are still some people who pay attention to Chen Yi's developments and give him basic respect.
When a group of fellow merchants started talking about Chen Yi's encounter.
Jinling Hangkong University, sophomore dormitory.
Shao Kaiwang habitually opened his uncle's website and opened Chen Yi's account.
Two years ago, it was through Chen Yi's self-media account that he first learned about drones, and then further learned about model aircraft and aircraft.
In the end, the content of the video inspired my inner interest, and I chose Jinling Airlines for the college entrance examination.
Although after two years of hard study, he has mastered much more in-depth knowledge than what Chen Yi introduced in the video, and can even easily discover some wrong civil science knowledge in Chen Yi's video.
But over the past few years, watching the videos and updates on Chen Yi's account has become his habit.
However, today, the updated content of Chen Yi’s account seems to be a little different.
“These photos and screenshots don’t seem to belong to P.”
"But at an altitude of 55,000, a turbojet engine cannot go up at all. A rocket engine with its own oxidizer is needed."
Shao Kaiwang clicked on the trailer picture sent by Chen Yi and felt a little puzzled.
Because of the photos and screenshots sent by Chen Yi.
No matter how he looked, he couldn't see any trace of the P picture.
But if it is not P picture.
This height of 55,000.
Unless it's a rocket engine, a turbojet engine can't go up at all.
"Is it true? Just calculate the angle of the sun."
After studying for a while, he still couldn't figure out whether this was a P picture or whether Chen Yi's turbojet model aircraft really flew to an altitude of 50,000 meters. Shao Kaiwang simply stopped worrying and took out a pen and paper to start calculating.
Girlfriends can lie, but calculations and mathematics cannot lie.
"The parameters in the screenshot include the longitude, latitude, altitude, and time of the model aircraft drone.
With the latitude and longitude, seasonal information, and the curvature of the horizon, you can calculate the angle of occlusion by the sea level at the current longitude and latitude after the sun sets when shooting.
The photo also captured Venus, the brightest star after the sun sets.
Likewise, depending on the season and shooting time, the visual distance and angle of the Sun and Venus can be calculated.
Then when the line of sight rises from sea level to 55,000 meters, the line of sight of the lens, the position of the sun, and Venus form a triangle, and the interior angles of this triangle are "
Shao Kaiwang wrote down three numbers, then saved the photos taken by Chen Yi to the memo, and used the stroke tool to connect the sun, Venus, and the visual center point, which is the position of the lens.
Without measuring with an angle ruler, Shao Kaiwang knew by visual inspection that these three angles were accurate.
Afraid that his visual inspection was wrong, Shao Kaiwang still took out an angle ruler and measured it several times before his expression fell into silence.
The measurement results cannot be said to be exactly the same, only completely consistent.
"It's amazing!"
"You are worthy of being my guide in aerospace vehicles! Awesome (broken sound)!"
Shao Kaiwang shouted loudly.
Opening a small team group for the academy's aircraft that he joined, Shao Kaiwang forwarded Chen Yi's trailer link.
[Shao Kaiwang: Friends, I found a magical up master who predicted a turbojet model aircraft that can fly directly to an altitude of 50,000 meters! 】
【Luo Zehai:???】
【Andre Wu:???】
【Lin Weijie:???】
[Lin Qian: Wangwang, are you still awake, a model aircraft at an altitude of 50,000 meters? 】
[Shao Kaiwang: Really, if you look at the parameters in the photos posted in the trailer and the screenshots of the control interface, I calculated the angle of the sun and the angle of Venus in the photos, they are exactly the same! 】
[Shao Kaiwang: This is an up owner that I have followed for several years, and he was also my first teacher in the field of aircraft. The reason why I applied for our academy to study aircraft was because of his influence. 】
Shao Kaiwang posted his calculation process and results.
This was the first time that he introduced Chen Yi's account to his friends and the process of getting to know Chen Yi.
He had thought about sharing it before, but Chen Yi's video was really too eye-catching.
No, it's too civilized.
It's okay as a simple popular science.
But as long as you are a little more in-depth and professional, it will be vague or full of loopholes.
It made him feel embarrassed at all and shared the introduction with his classmates.
But now, using a turbojet aircraft model to reach an altitude of 50,000 meters, no matter what method Chen Yi used to accomplish such a feat.
In Shao Kaiwang's heart, this was enough to make him shout out loud and share it with his friends.
Fake?
It can't be faked.
He believed in the character of the up owners he had been following for several years, and he also believed in his own calculations.
[Lin Weijie: There is no problem with the calculation. The angle between the sun and Venus in this photo is really 50,000 meters high in the sky]
[Luo Zehai: A turbojet model aircraft flies to an altitude of 50,000 meters. It’s really a knife in the ass, it’s an eye-opener!]
[Andre Wu: I thought we were awesome enough to build rockets from scratch]
[Lin Qian: I still feel there is a problem. Maybe the up owner has predicted Wangwang’s calculations and calculated the angles of the sun and Venus in advance when making the picture. 】
[Shao Kaiwang: Impossible, it’s impossible for this up owner to fake it. 】
[Lin Qian: Whether it’s fake or not, you’ll know by watching the live broadcast tomorrow. Didn’t his preview say that he will fly into space live at three o’clock tomorrow afternoon? 】
[Lin Qian: The weather in Jinling and Penghai has been good these days, and the visibility is very high. Let’s build a space telescope to track it tomorrow. 】
[Lin Qian: As long as the model aircraft goes up to an altitude of 60,000 meters, we can track it in Jinling. The photos and videos may be fake, but tracking it with your own eyes cannot be fake. 】
Chapter completed!