v2 Chapter 47： Fire (1/2)
A fire in space is definitely one of the last things all astronauts want to encounter.
After the Apollo 1 accident, NASA also redesigned and optimized the interior of the spacecraft, replacing the flammable materials in the cabin with some materials that will automatically extinguish, wrapping the insulation materials on the piping system and wires, correcting wiring problems, and changing The atmospheric pressure in the cabin was changed. The gas in the cabin was changed from pure oxygen to oxygen \ nitrogen mixture. The nylon spacesuit was changed to a spacesuit with a glass fiber coating. At the same time, the training of astronauts in fire handling was also strengthened.
The flame in the spacecraft is very different from the flame of the earth. Without gravity, the hot air generated by the flame combustion in the state of free fall will not rise, but will wrap the flame and form a layer of low oxygen around it. High temperature layer.
Because of lack of oxygen, the flame spreads very slowly, it will become a light ball, and the burning temperature is lower than the earth.
Generally, an alarm will sound in the spacecraft after the fire. Astronauts will then need to wear a breathing mask, determine the ignition point at the fastest speed, and cut off the nearby power source. At the same time, others will use a fire extinguisher to extinguish the fire. Uncontrollable, astronauts need to leave the fire compartment, retreat to other compartments, block the gates, and turn off the air circulation fan of the fire module.
Later Apollo XIII exploded in the service capsule the next day after launch, but the seven astronauts on the spacecraft were in dire danger and responded well, and all of them were safely transferred to the lunar module and the ground. The control center cooperated, abandoned the moon landing plan, drove the spacecraft to the back of the moon, and successfully returned to Earth by using the slingshot effect, creating the greatest miracle in the history of human spaceflight.
Of course, these are the last words.
NASA's fire treatment training is conducted in a closed environment that simulates an aircraft. Of course, no real fire is used. Instead, it is replaced by a red warning light. The participants are required to follow the steps to practice the fire-fighting process, so theoretically there is no Any danger.
According to the order of roll call, this time it was the middle-aged's turn to take the lead. He glanced at the high school students beside him, and the two went into the simulation cabin.
The simulation warehouse has two parts, corresponding to the service cabin and the moon landing cabin, and the two walked straight to the innermost service cabin. This is also where the first part of the training began.
However, when the alarm sounded, they did not remove the breathing masks as required in the manual. The high school students quickly took off their shirts, exposing a drainage bag tied to their bodies.
The water bags were not filled with clear water, but pale yellow gasoline, which was stolen from the storeroom.
He opened the petrol and poured them on the cotton bag that was used to simulate flammables. ”You can tell now how we can hide the smell of this thing, lock the door, and then complete the remote ignition.” . ”
The middle-aged person didn't answer until the high school student poured out all the gasoline, and he quietly backed up to the hatch, while taking out a match and rubbing it, he said again, ”I told you my In a single-player competition, I once encountered two players who were small in the real world. In order to compete for the last place, one of them had to kill the other. This is a very difficult choice, very difficult ... ”The middle-aged man paused.” What I didn't tell you was that I was the one who started. ”