Day 3 (4) The old cat is a good dictionary
"So... you unplugged all the cables on the engine?"
The old cat nodded.
“Can it be fixed?”
"cannot."
"Then can this rocket still work?"
"cannot."
Tang Yue felt dizzy in front of him.
"Old cat, you bastard! I want to strangle you to death-!"
"What are you excited about? You just told me that you can't do anything extreme." The old cat waved his claws lightly, "It's not a big deal anyway. The downgraded rocket engine is not used at all, and it will break if it breaks. As long as it's no problem to upgrade, it's fine."
Tang Yue breathed a sigh of relief and collapsed on the chair.
The old cat just told him that it had broken the rocket engine below. At that moment, Tang Yue was really frightened, his mind was blank, and his whole body was cold inch by inch.
If the rocket engine breaks down, it will be all over.
Tang Yue threw the maintenance instructions in his hand on the console, covered his face with both hands, and took a deep breath.
"Why are you unplugging all the cables?"
"Because they all went wrong and arranged in a mess." Lao Mao replied, "It was completely inconsistent with the description in the design drawings. Some lines were even in the opposite direction. I don't know who assembled the broken engine. It's really good luck for you to not turn into big fireworks during the landing process... So I simply cleaned them all and sorted out the engine's control system from scratch."
Tang Yue was stunned.
"Damn, that's so serious?"
"It's so serious." Lao Mao nodded and said righteously. "It's obvious that the assembly workers have a low level of education and can't even understand the most basic drawings. SpaceX is a big group, how could they recruit such people into the workshop...and wait."
The old cat suddenly frowned and realized that the problem seemed not that simple.
"What's wrong?" Tang Yue asked.
"Well..." Old cat hesitated for a few seconds, "Tang Yue, do you know what the 'Occam razor' is?"
"O... what? What razor? Is this a new razor brand?" Tang Yue looked confused, "I have only heard of Philips and Feike."
"Occam razor is a magical tool for researching problems. It is a philosophical concept: 'If it is not necessary, do not add conditions', which means that when you are studying a certain problem or making a certain point of view, the fewer the conditions and conditions for addition, the better. The more conditions you add, the more likely your point of view is to be untenable." Lao Mao explained, "Occam razor is used to eliminate conditions and cut off all unnecessary assumptions."
Tang Yue thought for a few seconds, "I probably understand what you mean, is that right? If I tell a lie, then I have to tell more lies to fulfill this lie. In the end, I can't keep the fire, so I might as well not lie at the beginning."
"It's a bit of that." The old cat stood on the gangway and nodded.
"But why did you tell me this?"
Tang Yue didn't know why Lao Mao suddenly brought up this Occam razor. What does this thing have to do with the current situation?
"As for the current engine wiring problem, I think the following factors may have led to this result: SpaceX's poor management, Americans are perfunctory in their work, assembly workers are too low in education, they cannot understand assembly procedures, assembly workers drank too much the night before work, and design drawings are wrong." Lao Mao paused, "But after careful thinking, I found that using the Occam razor can eliminate all the above complex assumptions and get a very concise and clear result, which is the real reason."
Tang Yue nodded.
“So what is the real reason?”
"I took the drawings back."
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Tang Yue sat in the command compartment of the Eagle spacecraft and checked the computer system of the logger in sequence according to the maintenance manual.
"Navigation...where is the navigation department..."
“Communication, communication channel… OK.”
Tang Yue debugged the buttons on the dashboard. Under normal circumstances, these tasks should be left to the commander. The commander is the driver, and he is just a passenger.
But now that the driver is gone, the passengers can only bite the bullet.
Fortunately, although the login is complex, it is a very automated thing. The computer consists of the computer itself from launch to docking. Tang Yue only needs to ensure that the program parameters in the computer are not wrong, and then press the button, and the Eagle spacecraft can complete the subsequent process.
This is like a fully autonomous car. Under normal circumstances, the driver only plays a role of insurance. Even if the driver is gone, the car can still be on the road as usual.
If this is replaced by a classic car from the last century, it will have to be controlled from the steering wheel to the brake clutch. If the driver faints in the middle of the road, the car will be ruined.
"Dooring...where is the docking control system?"
Tang Yue raised his head and opened his eyes to carefully examine the dense buttons on the panel. Most of the buttons on the spacecraft were made large and conspicuous, which was to prevent people from touching them by mistake, but the number was also dazzling, not to mention that there were various English abbreviations on it. With Tang Yue's English level, he must have been unable to recognize them. Fortunately, he had an instruction manual in his hand, otherwise Tang Yue would be stunned.
“UHF…UHF? Ultra-high frequency antenna…”
"Linear quadratic regulator tree...LQR-Trees? There is also simulation verification process...well..."
"Independent track change control parameters..."
Tang Yue compared the maintenance manual in his hand and turned around in the command cabin, surrounded by dense screens and buttons.
"Old cat, what does GNC mean?"
"Guidance, navigation and control, the English abbreviation of navigation guidance and control." Laomao replied.
“Where is PPL?”
"Pin-point landing, the English abbreviation for precise landing."
“EDL?”
“Entry, descent and landing, enter, descend and land.”
When encountering an English abbreviation that cannot be confirmed, Tang Yue can directly ask Lao Mao, which is easier than checking the manual, and Lao Mao can reply in one second. It is indeed a good dictionary.
Although there are more than 10,000 items in the manual, most of them are not useful. Most of the functions in this manual are descriptions of function related to manual operation. There is no doubt that the manual operation mode of the Eagle spacecraft is useless, and the final launch of the spacecraft will not be manned. It is a pure cargo spacecraft.
Since there is no one in the spacecraft's command cabin, the manual control system will naturally lose its effect. You cannot expect the sandwich in the box to climb into the command cabin to drive the spacecraft.
This part of the system can be turned off before launch, so Tang Yue doesn't have to check them anymore. This greatly reduces Tang Yue's work intensity and shortens working hours. He can still complete the task within two days of rushing to make progress.
Whether Ophiopogon japonicus can successfully survive this death disaster depends entirely on Tang Yue and Lao Mao.
Chapter completed!