The drone headed west.
Soon, we arrived at the Baihetan Hydropower Station among the rolling hills of the Hengduan Mountains.
The water flow from the upstream Jinsha River is intercepted by a 300-meter double-curved arch dam here, forming a super reservoir with a water storage level of 825 meters.
Based on the calculation of a building with one floor of 3 meters, the dam here is equivalent to a 100-story high-rise building.
"It is truly the pinnacle of the hydropower industry."
"This dam body is simply a high wall."
Chen Yi controlled the drone to lower its altitude and took various photos in a circle.
After taking the photos, move on.
Further ahead is the area where the three parallel rivers flow.
Jinsha, Lancang, and Nujiang are three major rivers, flowing from north to south in a Sichuan-shaped pattern.
The drone flew high in the sky over Sanjiang, startling groups of black-necked cranes and black storks, leaving behind each and every agile figure in Chen Yi's lens.
"If you have time, maybe we can take an aerial photography trip."
"Using my drone to take aerial photography is more exciting than the program "Aerial Photography of the Earth"."
After crossing the Three Parallel Rivers area, Chen Yi began to enter the Himalayas.
Towering snow-capped mountains pass under the lens.
In the valleys between the mountains and the plains, the mysterious Brahmaputra River is flowing slowly.
The melting snow from the Himalayan mountains has created this great river with the highest altitude and the fourth largest water flow in the world.
Flying along the runoff of the Brahmaputra River for a while.
Soon, the drone reached the highest peak in the Himalayas.
——Mount Everest.
No waiting for the drone to land from the sky.
The infrared scanner has already scanned the tiny but bright red dots on the surface of Mount Everest.
Chen Yi reduced the speed of the drone.
Avoid high-speed sonic booms that can cause avalanches in the mountains.
Then, as groups of mountaineers looked up in amazement, the drone slowly descended to the top of Mount Everest like a mosaic.
"Himalayas, check in at Mount Everest!"
Chen Yi controlled the drone's lens and took several photos of the stone monument of the world's highest peak.
Then he took off vertically, adjusted the angle, projected the shadow of the drone on the surface of the peak, and continued to take a few photos.
"Clock in completed, it's time to go back to bed."
After completing this check-in goal, Chen Yi yawned and controlled the drone to start returning.
Take off vertically.
After flying hundreds of meters away from the top of the mountain, I plucked onions on a dry land.
The drone quickly rushed to an altitude of tens of thousands of meters, and then turned on its maximum thrust.
boom!
Sonic booms exploded in the vast sky.
The drone quickly turned into an afterimage and disappeared into the eastern skyline.
"After flying more than 5,000 kilometers, the battery remaining is 28%..."
"Then, we will use leapfrog gliding for the rest of the return journey to maintain the balance of power."
"By the way, we can further test the aerodynamic coefficient of the fuselage and its performance under extreme working conditions."
After flying away from the boundary of Mount Everest, Chen Yi looked at the remaining power and without hesitation, directly raised the drone to an altitude of 40,000 meters.
Rushing to an altitude of 40,000 meters, the drone's speed has reached Mach 5.
At this time, the horizontal tail flips downward.
The fuselage began to change from rising to parabolic gliding and falling.
Then the left and right ailerons deflected and the aerodynamics changed.
The entire drone began to spin.
Hoo ho ho!
The drone spins faster and faster.
After a while, the angular speed of the wing exceeded the speed of sound.
It started to make a crackling sonic boom sound like a park master cracking a big whip.
Wisps of sonic boom clouds were produced at the edges of the wings.
But before it can take shape, it will be crushed and dissipated in the next moment, and then it will appear again and dissipate again.
Crunch! Crunch!
A crunching sound began to ring in Chen Yi's ears.
The AR glasses in front of me, the dense flight data, and the status parameters of the fuselage are also constantly being refreshed.
"As expected of a carbon fiber material with a basic tensile strength of 7Gpa, it is not affected at all."
Chen Yi checked the status parameters of the drone and felt a little relieved.
Don't look at the fuselage now creaking.
But this is just the resonance of the fuselage structure, there are also differences in dynamic balance, and the sound produced by rotational vibration.
The material of the fuselage itself has not been affected at all.
"It seems that on the basis of carbon fiber, 8 points of strength attributes have been further adjusted and upgraded."
"Today, the tensile strength of fuselage materials has reached the limit of Darwin's bark spider silk."
Chen Yi took out a pen and paper and calculated the flight data of the drone at this time.
Quickly, he figured it out.
In the current state of high-speed rotation, the tensile strength of the fuselage material has far exceeded the limit of steel and the limit of special glass fiber.
Under such rotation and pull.
Only the strength of Darwin's bark spider silk can withstand it.
“Darwin’s bark spider silk is currently the second strongest material in the world and the strongest biological material in nature.
Before the creation of carbon nanotubes, Darwin's bark spider silk dominated the materials world.
Strength and toughness, 21 times stronger than steel..."
Chen Yi recalled the parameters of Darwin's bark spider silk and thought about it: "The limits of this experiment can be further enhanced."
There is no problem in determining the strength of the fuselage.
Chen Yi immediately decided to continue to increase the intensity of the experiment.
Test the parameters of the drone under extreme conditions and expose possible problems in advance.
Phew!
A brilliant blue glow bloomed on the wings.
The drone, which was originally rotating rapidly, was actively rotating due to its fuselage.
In an instant, it spun even faster.
Just one minute.
The drone rotated and dived from an altitude of 40,000 meters to an altitude of 20,000 meters.
At this time, the ultra-high-speed rotating drone seemed to have turned into a tornado.
It was also like an enlarged version of Naruto's Jutsu - "Gatoga", stirring up a huge cyclone.
"Fuck, what is this!?"
When the drone rushed to an altitude of 20,000 meters.
More than ten kilometers away.
A Veyron fighter jet that was performing a separate flight mission also discovered the movement of the drone.
In the stratosphere where there is no cover from clouds and fog, the drone spins wildly and swoops down, like lice on a monk’s head.
This is clearly visible even from a distance of 10,000 meters.
"0738, what did you find?"
The tower, which was in constant contact with the fighter planes, heard the pilot's uncontrollable shouting and immediately called out to inquire.
"Report to the tower, No. 0738 found an unknown aircraft spinning and falling at high speed."
"The falling speed was Mach 1.2, and the optical scan was very blurry, as if there was a layer of mosaic.
The airborne radar could not detect the signal, and it was suspected that a new stealth technology was used. "
"No. 0738 applies for close observation, please approve it from the control tower."
The pilot of No. 0738 was making a quick report.
At the same time, the optically scanned signal image is transmitted back to the tower for closer observation.
"Access approved, but be safe."
"Focus on observing the target's falling direction and angle to determine whether there are residential areas below."
"If there are residential areas, independent interceptions are allowed, with the safety of people's lives as the first priority."
"0738 received!"
Confirming the tower's order, the 0738 pilot did not hesitate.
He immediately turned on the engine's afterburner mode, broke through the sound barrier, and chased after Chen Yi's drone.
Boom!
0738 Just caught up with the target.
Suddenly, the aircraft in front was spinning at supersonic speed.
Blue glow bloomed like a hedgehog.
Then the aircraft's rotation speed rapidly decreased, slowed down, and slowed down.
Arriving at the 13,000-meter area.
When the civil aviation altitude of 12,000 meters is less than 1,000 meters.
This unknown aircraft completely stabilized its fuselage and pulled out a full moon-like trajectory in the sky.
The fuselage changed from a dive attitude to a pull-up state.
Immediately afterwards, the tail sprayed out violent airflow and blue glow, and the entire aircraft soared into the sky...
high speed.
It surpassed Mach 2 in no time.
Then it rushed to an altitude of 20,000 meters, and an altitude of 30,000 meters, exceeding the ceiling of the Veyron.
"..."
No. 0738 was dumbfounded and hurriedly reported to the tower: "Report to the tower, the target stopped rotating at an altitude of 13,000 meters, pulled up again, and entered the critical space at supersonic speed, making it impossible to get close to observe."
There was silence at the tower.
Looking at the emergency plan that had just been activated, he notified the nearby airport tower and the air traffic control bureau to issue air control instructions.
"...No. 0738, please confirm your observation again."
"Report, I'm sure!"
No. 0738 answered seriously.
But as soon as he finished speaking, he saw the sky dozens of kilometers away.
Unobstructed by clouds and fog, the newly unknown aircraft swooped down again like a rotating mosaic.
"...Report to the tower, it's swooping down again."
"Please allow me to conduct a mid-air interception to determine the identity of the other party."
At this moment, the tower seemed to have guessed something, and there was no response at all.
Waited for several minutes.
A new command was passed back.
"No. 0738, please continue your transition mission and ignore this unknown aircraft."
"But......"
"It's confidential."
confidential?
No. 0738 looked shocked.
Looking at the unknown aircraft in the distance that started to stop spinning like a hedgehog, and then lifted up again like a leapfrog, there was deep shock and expectation in the eyes.
Could it be that this is a new fighter aircraft undergoing test flights?
But what kind of fighter aircraft needs to use such a rotating frog leap test flight method?
...This is too violent.
