Tang Yue's heart skipped a beat when he heard this.

The old cat swore by him and Mai Dong before, but God knows if the cat was slapping his swollen face and making him fat, as an electrician and half-hung astronaut, he also took a course in orbital dynamics before going to the sky...... Although he dozed off most of the time during class, there were a few words he remembered.

"Don't do it in violation of the rules!"

"Don't do anything wrong!"

"In any case, don't do anything wrong!"

"As long as you follow the instructions in the workbook, then Orion and the lander will be able to bring you back intact, otherwise it will be difficult for us to collect all your ashes, because the gales of the stratosphere will blow you everywhere."

What does the workbook say?

- Don't touch any buttons.

But this is obviously a serious violation, not only in the violation, it also overrides all the regulations in the workbook.

Tang Yue re-erected the Orion spaceship model that had fallen on the table, "Only five degrees of leeway?" ”

"Yes, that's the result of my calculations so far." The old cat held up the model, "You know that Orion must ensure that its attitude is vertical after entering the gravitational circle, and its angle of attack cannot exceed plus or minus five degrees during landing, because the structure of the engine propellant tank is very fragile, and the thinnest part of those large canisters is only three millimeters thick, and it even needs the pressure of internal fuel to maintain its normal shape - for example, Orion's fuel tank is a balloon filled with water tension. ”

"Obviously we can't let this balloon shake in any way, or it will pop - and there are four of them." ”

How steady is it to hold four full-fledged water balloons in a rapid landing, and not let them burst?

Tang Yue really doubted that the nine Raptor 10D engines on the Orion spacecraft could do this, he hadn't seen the Raptor 10D, the nozzle was thick enough to drill into an adult, such a stupid black and thick thing could really meet the requirements of maintaining such a precise and meticulous deviation angle below five degrees?

This is no longer Zhang Fei's needle.

This is nine Zhang Yide to cooperate in embroidering on the tip of the needle.

"It's hard." The old cat said bluntly, "The Raptor 10D is not used to do this, it is not a special attitude control engine, and it cannot achieve this accuracy." ”

"Is there any way to fix it?" Tang Yue erected a model of the Orion spaceship, slightly deviating from the left and right, simulating in his mind what the concept of deviating from the fifth degree is.

"I can only improve the control accuracy as much as possible, and the rest is left to luck." The old cat replied.

"By luck?"

"Of course, it's by luck, do your best to obey the destiny of heaven?" The old cat nodded, "Luck is very important in most cases, as the saying goes, three points return to vitality, and seven points depend on hard work...... The remaining ninety points are luck. ”

"Can you be reliable?"

"I'm not reliable, are you reliable?" The old cat rolled its eyes.

"Holy!"

"Well, you rely on you, you can tell me how to solve the problem of engine control? How to keep the attitude of the Orion spacecraft within a controllable range? ”

"You ......" Tang Yue held a breath in his throat.

"Come on, we can still do some bit of control of the engine, but some parts are all up to luck, such as the structure of the truss, the strength of the interface or something, we can't control these things at all, we can only pray that they don't go wrong." The old cat said lightly, "Letting the Orion spacecraft into the atmosphere is essentially a gamble, it is never a sure thing, even if we can make sure that the spacecraft does not have a little problem, and there is a strong crosswind during the landing, it will be over." ”

"Probability!"

"What probability?" The old cat was stunned.

"What are you best at, can you calculate the probability?" Tang Yue asked, "What is the probability of a successful landing of the Orion 2 spacecraft?" ”

The old cat sat in a chair, tilted his head to look at the monitor, was silent for a moment, and shook his head.

"It doesn't count." The old cat said, "We are not guessing the coin, but we are crossing the river by feeling the stones, can you calculate the probability that there are stones under the water ahead?" We can only step out first, and if we are lucky enough to step on it, then we will be one step closer to the other side, in case we are unlucky......"

The old cat's voice was lowered and he didn't say any more.

The old cat was too powerful, and this strength gave Tang Yue some kind of illusion...... You're in control. There are so few things they can actually control that a single loose screw on the Orion spacecraft can bury the entire ship, but no one knows where the screw is or when it will fall off.

Tang Yue twisted his neck, turned around and took off the Mingguang armor extravehicular suit, and removed the life support system from the wall.

"You're going out?"

"yes."

"Isn't the extravehicular operation already done?" The old cat asked, "What are you doing when you just come back?" ”

"Go out and look at the stars."

"It's not dark yet."

"Then watch the sunset."

"There is no sunset on Mars."

"Then I'll go see the flying saucer."

"There is no ...... on Mars When you see a flying saucer, remember to take a picture. ”

·

·

·

"Tang Yue, are you lazy again?"

"I'm not lazy, I've done all the work, and I'm pretty much in charge of the art history." Tang Yue leaned against the garage door and sat on the sand, "Carefully revise it tomorrow, and you can file it." ”

"And what are you doing?"

"I'm watching a flying saucer." Tang Yue looked up at the sky, looking at the white sky above his head through the glass mask.

"Flying saucers?" The girl was amazed.

"Yes, it's only when I go out and watch UFO every day that I feel that my life is meaningful." Tang Yue replied, "Although I haven't seen it yet, I think that as long as I continue to look at it day by day, I will be able to see it one day...... My crush is a Hero Saucer, and one day it will come to me with colorful auspicious clouds. ”

Mai Dong closed the control panel in the core module, and she and the old cat were adjusting the system computer of the United Space Station.

"We still have to have a little hope in life, otherwise what are we living in this world for?" Tang Yue said, "Every day in this universe is different, no one stipulates that the earth will not disappear tomorrow, so no one stipulates that there will be no flying saucer landing in front of me tomorrow, there will be tomorrow after tomorrow, time is endless, this is like you give a monkey a typewriter, as long as there is enough time, it will sooner or later type out Shakespeare's four great tragedies word for word...... So it's inevitable that a flying saucer will appear. ”

"I hope that day." The girl smiled.

"There will come a time." Tang Yue said, "In this universe, as long as it is something you believe, it will definitely happen one day." ”8)