This civilization is very strong, but the technology tree is a bit crooked

after an hour.

Chen Yi filled the model airplane with kerosene and liquid oxygen, and drove the car to a park by the sea.

Move the drone down, set up the ground antenna, turn on the remote control and start debugging the avionics signal.

"Altitude measurement is OK, the temperature sensing module of the chassis is normal, the fuel endurance calculation is normal, the speed and distance adjustment is normal, the navigation function is normal, the attitude sensing of the fuselage is normal, and the front and rear cameras are normal."

Compared with the simple ducted aircraft model with only one speed control switch, the avionics system of the turbojet model aircraft is undoubtedly more complicated.

Because of the lack of ground-based radar, altitude can only be measured with the help of barometric pressure and temperature measurements from altimeters.

The speed and distance of the model airplane flying in the sky, as well as the debugging of navigation, are also different from the navigation on the ground, which mainly relies on base station triangulation, and needs to rely on Beidou positioning for measurement and navigation.

I was busy for more than forty minutes.

Night has fallen, all the functional debugging of the aircraft model has been completed, and the report of the UAV test flight has been completed at the same time.

Chen Yi set up the signal antenna of the remote control, sat in front of the computer, put his left hand on the throttle stick, and his right hand held the joystick.

beep! There was a long cry.

Avionics system activated.

The engine fires.

boom!

The azure blue tail flame is ejected from the engine nozzle of the aircraft model drone.

Chen Yi released the brake, opened the throttle valve, and the powerful engine thrust pushed the model airplane drone straight out.

The tail flame is more than half a meter long, and in the night, one can clearly see the Mach rings one after another.

"take off!"

Chen Yi pulled the joystick.

With a whimper, the drone rose in mid-air at a high angle of elevation, like a vertical rocket, rushing into the sky.

"Raise the altitude, fly to the ocean, and test the maximum speed and ceiling altitude again."

Chen Yi controlled the drone, quickly climbed to an altitude of 500 meters, then turned around and flew towards the ocean.

The computer next to him, which cost Chen Yi a lot of money to purchase customized avionics software, is continuously beeping to indicate that the communication is normal.

On the right side of the software, various parameters such as the drone's speed, fuel life, altitude, latitude and longitude, azimuth, acceleration, etc. are displayed.

The central interface is divided into four sections.

The two areas above show the front and rear perspectives of the drone camera respectively.

The following two pieces, one is a dynamic map positioning, and the other is a 3D model composed of lines, which simulates the body posture of a real drone in real time.

Soon, the drone entered the ocean 10 kilometers away from the human activity area.

Chen Yi looked at the map for positioning, pulled the joystick, increased the throttle and throttle output, and the whole drone began to climb straight.

In the dark night, there seemed to be stars twinkling in the direction of the ocean.

On the monitoring screen of the computer next to it, the real-time simulated posture of the fuselage is already straight up.

First-person view of the camera on the front of the drone, which is also slowly starting to appear starry.

The whole plane is going star by star!

"1600m.2000m.3000m.5000"

Chen Yi maintained the drone's climbing state, but focused on the computer monitoring screen next to him, staring at the drone's altitude parameters displayed on it.

"7900 meters. The speed broke the sound barrier! The speed is 512 meters per second, and the fuselage is shaking!"

At this time, through the shaking of the camera's perspective, Chen Yi judged that the fuselage was already shaking.

The 3D model of the real-time simulation, the diameter of the nozzle of the engine is also expanded to the maximum because of the supersonic speed.

The temperature parameter next to it is also soaring, which means that the drone is about to enter the thermal barrier caused by super high speed, air and fuselage friction.

Chen Yi controlled the power output to ensure that the shaking drone would not be further shredded by the air.

Another ten seconds passed, and the model airplane drone began to enter the thermal barrier, and the edge of the lens had already photographed the fuselage that was reddened by the thermal barrier.

In less than a minute, the drone climbed to an altitude of 20,000 meters.

This height has surpassed the ceiling height of most modern fighter jets.

The camera at the rear has captured the night lights of the entire Penghai City and surrounding cities.

"At an altitude of 20,000 meters, the thin air in the stratosphere has affected the combustion efficiency of the turbojet engine"

Chen Yi glanced at the computer and it showed that there were still three quarters of the fuel. Without hesitation, he opened the valve of the oxidant fuel tank and started the injection of liquid oxygen.

beep!

The nozzle of the drone turned into a cone-shaped horn, and the speed and acceleration soared a lot.

But thanks to the thin air in the high-altitude stratosphere, although the speed has skyrocketed, the fuselage flew more stably.

There was no shaking of the fuselage due to the high speed as it did at the beginning of the climb.

"30,000 meters, 38,000 meters, 40,000 meters, 55,000 meters, entered the ozone layer, and the camera captured the sun"

When the drone climbed to a height of 50,000 meters, the sun, which had set for more than two hours, reappeared at the edge of the picture.

Chen Yi did not continue to let the drone climb, but adjusted the flying attitude of the drone.

Changed from climbing to direct flight, the camera was aimed at the sun, and several photos were taken in succession.

After taking the photos, Chen Yi already had a detailed understanding of the drone's performance, and he also had an idea for the upcoming live broadcast promotion, so he no longer planned to continue flying.

Control the UAV to turn the nose and start to decelerate and land.

Ten minutes later, two blue tail flames fell from the sky, slid nearly 100 meters along the straight road in the park, and then stopped steadily.

[Item: Fixed-wing aircraft model drone]

[Attributes: Energy x7.3, Speed ​​x13.8, Stability x4.9 (-0.6), Strength x9.4, Communication x10.5, Radar Shooting x6.1, Avionics x8.7, Beauty x2.1]

[Wave of Consciousness: 489]

[Adjustable attribute: 0]

"It seems that crossing the sound barrier at low altitude during the climb still has some impact on the drone."

Chen Yi checked the status of the drone, and saw that the stability attribute was reduced by 0.6: "The stability attribute has been reduced, this should be a problem with the internal structure of the drone."

I have been in the model airplane business for several years.

Even if he is not from a professional discipline, Chen Yi has a certain understanding of aircraft.

When the aircraft is flying at high speed, in addition to the resistance of the air, the parts and structures inside the fuselage also need to withstand the overload and torsion caused by the ultra-high speed flight.

If the former is not passed, the aircraft will be torn apart by the air because it cannot withstand the tearing of the air.

If the latter is not passed, the aircraft will fall apart due to excessive overload.

Just when climbing at high speed, the fuselage shook.

The high probability is that the mechanism design is not perfect and the stability is not enough, resulting in problems.

If the speed had been faster at that time, or Chen Yilai had maneuvered at a large angle, the drone would have fallen apart in mid-air.

"It seems that when making ultra-high-speed aircraft in the future, in addition to speed, stability attributes are also critical."

"This time, I left 400 consciousness waves, and I can adjust two attributes. The beauty is reduced a little, and the communication is also reduced a little, and they are added together to be stable."

Colorful rays of light bloom.

Well, uglier.

Chen Yi took a look at the adjusted drone, logged in to the self-media accounts of the major platforms, uploaded the photos he just took and screenshots of the avionics software interface, and published a unified notice.

【Brand new turbojet, go straight up to 50,000 meters high, watch the sunset, enjoy the starry sky. Tomorrow, look forward to it! 】