After the radio communication ended, the atmosphere in the cabin suddenly became more solemn.
"Ahem!"
Lu Yongchang twisted his body uncomfortably: "Everyone, don't be so dull, we still have to fly for a long time!"
Bai Yixuan, who was sitting in the main driving seat, showed a slight expression and said in a deep voice, "Professor Lu, please obey our instructions from now on!"
"Hong Fan, check Professor Lu's seat belt again!"
"Yes!" Hong Fan reached out to unbuckle the seat belt on his seat, then stood up to check Lu Yongchang.
"I say... there's no need to be so serious, right?" Lu Yongchang looked at Hong Fan in front of him helplessly, "I won't joke with my life. I've simulated it many times, and I guarantee nothing will go wrong!"
"Professor Lu, I am a soldier and obeying orders is my duty!"
Bai Yixuan's calm voice came from the front: "Since Academician Cao has given us an order, we will protect your personal safety at all costs!"
"If..." Bai Yixuan paused for a moment, "If something really happens, you can use my escape device to escape!"
There were originally three sets of escape devices stored on Xuannv-1.
Each escape kit includes ultra-high altitude parachuting equipment, protective clothing and oxygen cylinders.
Although these devices cannot ensure the safety of drivers in outer space outside the atmosphere, they can still bring people back to the ground safely within the atmosphere.
After Bai Yixiuan finished speaking, the atmosphere inside the cabin of Xuannv No. 1 became heavy again.
Lu Yongchang was slightly moved.
He subconsciously reached out and touched his nose, then whispered, "Actually... I secretly brought a set of escape equipment up here, it's at the back of the cabin."
Bai Yixuan and the other two: "..."
"Ahem! Professor Lu, we have reached the planned altitude. Next, the flight posture of Xuannv No. 1 will change. If you feel uncomfortable, please let us know!"
Bai Yixiuan changed the subject with a stern face.
Awkward!
So embarrassing!
He was even ready to sacrifice himself!
It turned out that the man brought his own escape device!
What is this?!
Careful consideration?
Of course, if Lu Yongchang knew what Bai Yixiuan was thinking at this moment, he would tell him in a righteous and stern manner.
Sorry, this is just pure fear of death.
He doesn't want to live his life again and end up in such a place for no apparent reason!
…
As Bai Yixiuan pushed a few buttons on the console in front of him, a cool white light slowly lit up inside the cabin.
"drop!"
As a reminder of the system self-check sounded, Bai Yixiuan's expression suddenly became more serious.
"The air pressure is stable!"
"The oxygen content is normal, the oxygen generator is operating normally, and the air filtration device is normal!"
"Hall thruster power is normal!"
"Get ready to speed up!"
As orderly and compact reports reached Lu Yongchang's ears, some changes occurred in the flight posture of Xuannv No. 1.
As the nose of the aircraft gradually tilted upward, Xuannv No. 1 was inclined at a 60-degree angle to the ground.
The next moment, an even stronger vibration came from under my feet!
The rate at which deuterium and tritium bubbles appear in the small fusion reactor is increasing rapidly, and astonishing bursts of energy are quickly released from the inside of the deuterium and tritium atoms!
Immediately afterwards, the dark blue flame at the tail of Xuannv No. 1 became stronger again!
The huge recoil force once again pressed Lu Yongchang firmly onto the seat!
"Professor Lu, how is it? Can you bear this acceleration?"
Bai Yixiuan's voice was heard from the side.
Judging from his voice, this acceleration seemed to be very easy for him.
On the other hand, Lu Yongchang's face flushed slightly, and he nodded with some difficulty, "Don't worry, I can handle this kind of acceleration!"
Xia Wanyi on the right turned her head and glanced at Lu Yongchang with some concern, and said softly: "How about... should we slow down a bit?"
…
In areas with dense atmosphere, Xuannv-1's maximum flight speed is about Mach 5.
But when it reaches the high-altitude space with thin atmosphere and has sufficient time to accelerate, the maximum speed of Xuannv-1 can reach the first cosmic speed, 7.9km/s, or about Mach 23.2.
After entering the geosynchronous orbit, without the influence of the atmosphere, after a long period of acceleration, the flying speed of Xuannv-1 can even reach the astonishing second cosmic speed, 11.2km/s!
This is also the minimum speed Xuannv-1 needs to travel to the moon!
But even so, due to Lu Yongchang's physical condition, Xuannv-1 took a full five hours to reach the 36,000-kilometer geosynchronous orbit.
Although it seems like a long time, compared with the time it took for previous satellites to enter orbit, Xuannv-1 can be considered extremely fast!
Low-orbit satellites, that is, near-Earth orbits hundreds of kilometers above the Earth's surface, usually only take tens of minutes from launch to entry into orbit.
If it is a geosynchronous orbit of 36,000 kilometers, a satellite often needs to travel a long distance of nearly a month before it can successfully enter orbit!
After all, the rocket will only push the satellite into a low-Earth orbit hundreds of kilometers above the surface, and the satellite has to travel the rest of the way on its own.
…
As Xuannv No. 1 gradually climbed higher, the scenery outside the porthole gradually changed.
The distant horizon gradually turned into an arc shining with crystal light.
Next, what came into Lu Yongchang's eyes was a pitch-black space, just like a pure black curtain!
And on this pure black curtain, there are tiny dots of crystal gems that emit a faint glow.
Those crystal gems with faint light are stars that are tens or even hundreds or thousands of light years away from the earth.
At the same time, a feeling of weightlessness came over me.
Lu Yongchang, who was experiencing this feeling for the first time, frowned slightly.
To be honest, it doesn't feel good.
"Professor, we're here!"
Bai Yixiuan's voice reached Lu Yongchang's ears.
Thanks to the good airtightness of the Xuannv-1 cabin and various oxygen-generating and air-filtering devices, as long as they do not leave the cabin, everyone does not need to wear bulky spacesuits all the time.
"How beautiful…"
Lu Yongchang looked through the porthole in front of him with a deep gaze, staring at the starry sky in the distance.
His heart moved slightly.
That's the direction of Proxima Centauri.
As a red dwarf star only 4.22 light-years away from the Earth, its visible magnitude is 11. Therefore, Lu Yongchang cannot observe it with the naked eye.
But even so, Lu Yongchang still felt inexplicably excited!
Perhaps the future of mankind lies near that distant red dwarf star!
"Calling the ground control center, calling the ground control center, Xuannv No. 1 has arrived in the synchronous orbit, please give instructions!"
Bai Yixiuan's voice interrupted Lu Yongchang's thoughts.
"Shh... shhh... Got it, Xuannv No. 1, report your situation!"