Xenon ion thruster SPT276.

The world's most powerful electric rocket, produced by JAXA and manufactured by Mitsubishi Heavy Industries.

Thrust up to 70N.

"Is it still there?" Tang Yue has a deep memory of this electric rocket, the engine that was dismantled from the Falcon III asteroid probe is currently installed on the space station, and it was successfully repaired by Mai Dong not long ago, "to see if it was destroyed by an accident." ”

"Watching...... But the data transmission is unstable. The old cat stood in front of the computer, frowning, "This damn transmission speed, like a Baidu cloud disk that has not opened a member, hell Baidu." ”

Tang Yue wanted to contact Mai Dong, but was stopped by the old cat.

"Don't talk nonsense, don't take up broadband, there's only such a thin link between us and the space station right now."

The space station's system computer is transmitting data at full speed, which is very large, and what the old cat is doing is the equivalent of downloading a 4K HD movie on the Internet with a telephone dial-up.

Tang Yue was very worried, the situation of the space station in orbit could change every second, and he was actually limited by the speed of the network.

"How long will it take?"

"We only have a sheep intestine trail as wide as the Shuhan plank road now, but how long do you think it will take for the other party to send the aircraft carrier over from this road?" The old cat whispered, "Let me see, the total amount of data waiting to be transferred is more than 88 GB, the average transfer speed is 200KB per second, and the total time is more than 128 hours...... Five days. ”

Tang Yue glared.

"The daylilies are cold in five days!"

"I know, don't argue, don't argue, don't argue! I've got to compress the data, I've got to compress the data......" The old cat started to sweat profusely, "I need to write a set of compression rules, give the idiot computer on the space station a protocol, give it a sieve and a basket, and let it sift through the data, pack it, compact it, and throw it down!" There should still be room for squeezing the data link...... There's still room for squeezing, squeezing it like the IEEE's predecessors squeezed the spectrum! ”

The old cat's hand speed was probably at the limit of the fastest in his life, and the keyboard was about to burst.

"How? Will it work? ”

"Hey......" the old cat grinned, revealing his white teeth, "Tang Yue, do you know how the live TV broadcast of Apollo landed on the moon back then?" ”

Tang Yue was stunned.

"The wisdom of coders is infinite, and where there are people, there are programmers." The old cat's paw flew fast, "Do you know who said this?" ”

"Alan Turing?"

The old cat shook his head.

"Von Neumann?"

The old cat shook his head.

"Shannon? Moles? Bill gates? ”

"Wrong!" The old cat slammed the enter key, "Do you still need to guess?" Apparently Lu Xun said it! ”

Lu Xun: ......

“OK！ Filtered and compressed, the total data volume is 36MB! The average transfer speed is 3MB per second! Estimated time is 12 seconds! Start Transferring – Ten! Nine! Eight! Seven! Six! Five! Four! Three! Two! One! Transmission done! Begin to unzip, data recovery-" The old cat shouted the numbers like an auction house host, the monitor in front of it refreshed rapidly, a series of processes completed at breakneck speed, and a diagram of the structure of the United Space Station popped up on the screen.

The structure diagram is then rotated and zoomed in.

"SPT276 is normal!"

The SPT276 xenon ion thruster is installed on the left side of the station's main truss, where there is a small platform that can be used to release the satellite.

The Union Space Station is bounded by a core module, and the truss on the right side is cut off by Orion and is almost completely damaged, but the left side remains largely intact.

SPT276 can still be used, Tang Yue breathed a sigh of relief, and finally had good news, at the moment when the three-axis stabilization system of the Orion spacecraft exploded and completely failed, this electric rocket was the only power source.

"Prepare to change to spin!"

The Joint Space Station is out of the shadow on the far side of Mars, and Mai Dong finally sees the light again.

The sun and Mars alternated in front of her eyes at great speed, the space station rotated around the center in a six-second cycle, with an average angular velocity of sixty degrees per second, the sun flew through the porthole, flew by again six seconds later, flew again six seconds later, and Mars circled around itself, and the whole world became a big turntable, and the sky was spinning, Mai Dong felt that he had been put in a big jar by someone, and then the man began to roll the jar frantically.

As an astronaut by training, Mai Dong's balance and sense of direction are stronger than those of ordinary people, but the stronger her balance in this situation, the more painful it becomes, and she has to close the porthole on one side and fix herself in a corner.

Centrifuges are time-limited during ground training.

But there is no end to the rollover of the space station.

Mai Dong could only observe the damage to the United Space Station after entering the sunny side, she was wrapped in a huge amount of debris and space junk in the middle, the space station at this moment is like a demolition site after blasting, these debris all come from the space station itself and Orion, the small one is only the size of a fingernail, the big one is as big as a basin and a manhole cover, and the debris rotates with the space station at the same speed and in the same direction.

"Miss Mai Dong? Miss Mai Dong received the please answer. ”

"Roger." The girl's face was bloodless, "Mr. Cat." ”

"Miss Mai Dong, are you okay?" The old cat asked.

"It's fine." Mai Dong replied, "But to be honest...... I was very uncomfortable, I had a terrible headache, my whole body hurt. ”

"Please secure yourself, Miss Mai Dong, and then we will abandon the damaged Hope and Discovery cabins, there will be slight shocks and shocks."

The SPT276 ion rocket has only seven kilograms of thrust, and in order to achieve the most significant deceleration possible, the smaller the mass of the joint space station, the better.

Orion has almost cut off half of the mass of the space station, and the old cat will discard the damaged module, and the Mars United Space Station will only be left with the Crystal core module and the Hub node module, with a total mass of less than one-third of the original.

As soon as the old cat's voice fell, the space station shook slightly.

Mai Dong looked out the window, and could see that half of the Hope cabin was gradually moving away from him, and it was conceivable that the Hope cabin was breaking away in the other direction, and these two modules would maintain their current state of motion, and they would stay away, Mai Dong looked at the white bulkhead of the Hope cabin, and remembered the plants she planted.

"Next, put away the heat sinks and solar sails."

The old cat put away the only four remaining solar panels, which are the lifeblood of the space station, and there must be no problems.

"SPT276 is ready to start."

Once the ion thrusters are activated, the space station will gradually slow down, but the debris around it will not slow down, so there is a risk of impact.

At this time, they could only pray that the Crystal Cabin was strong enough.

"Mai Dong, we have always been with you." Tang Yue's voice sounded in the headphones, "Forever, Forever." ”

"Hmm."

Mai Dong nodded and closed his eyes.