Chapter 14 Chapter Thirteen Artificial Gravity Generator!

Sci-fi works with spaceships since ancient times, such as "Space Battleship Yamato", "Space Pirate Captain Harlock" The Golden Country in the movie, or the Enterprise of StarTrek, all have one common feature, that is: they have "gravity" on board! (Actually, even the White Base in Gunndam and the Albion have internal gravity. On the contrary, the later Argama only had the centrifugal force of rotation in the residential area. Later, even the flagships such as Rakalam Only magnetic boots are available...the more you get lost, the more you go back?) In fact, if there is no gravity during a long-term space flight, not only will life be inconvenient, but muscle atrophy and bone calcium loss will also occur.Therefore, like the Discovery in "2001 A Space Odyssey", it uses the method of rotating the living area to generate centrifugal force, so that the crew members have a sense of gravity (the space colony in Gundam is also the same.), the space station before ancient times was also designed to Ring shape, so that rotation creates centrifugal force.Why does it have to be round to rotate?The reason is simple, because the magnitude of the centrifugal force is related to the radius of gyration and rotational speed. The circular design allows all personnel to obtain the same centrifugal force at the same radius of gyration and at the same rotational speed.

But looking back at the spaceships in front, except for the residential area of ​​Akama, none of them are "round"! (The bridge part of the USS Enterprise is round...but how to "rotate" that part?) If the Yamato uses centrifugal force, then there are three rotation methods: First: Rolling forward and backward (as shown in the figure).The Yamato just "turned" all the way to Isconsin... The centrifugal force produced in this way is mainly in the bow (where the wave gun is) and the stern (where the jet is), and the captain's room at the top of the bridge (pictured).In this case, the rotation speed only needs to be once every 18 seconds, and the bow and stern of the ship can be rotated at a speed of 42 meters per second to generate a centrifugal force equivalent to gravity.

But this has some problems: first, all the crew members have to be crowded in the bow and stern of the ship, and the living space is extremely small.Moreover, Captain Okita Thirteen had to hang upside down in the captain's room, which lost his majesty... The biggest problem is: because the distances from the axis are not the same, the three places cannot get the same centrifugal force at the same speed!The centrifugal force of the captain's cabin is only 2/3 of the bow and stern. If the captain is to enjoy normal gravity, the other crew members have to squeeze into the bow and stern to endure 1.5 times the gravity... The living space is so small, how can it be To endure the oppression of high gravity, wouldn't there be a mutiny bloodbath?It is best not to make such an arrangement for long-term sailing... The second method is to turn left and right horizontally (as shown in the picture): In this method, the captain’s cabin also becomes weightless, and only the bow and stern are left. centrifugal force.The turning speed can be slower, about once every 22 seconds, and the turning speed of the bow and stern is about 34 meters per second.However, this results in less living space.

The above two rotation methods have a serious disadvantage: because the main nozzle (stern) and the wave muzzle (bow) are both rotating, so the direction cannot be changed at all!Can't fire wave cannon either! Let's take a look at the third type: sideways.That is to say, take the direction of progress as the axis and advance like a drill (as shown in the figure).As a result, most of the entire ship except the bow and stern has centrifugal force, and the living area is much larger.But there is one place that stands out, and that is the bridge!Especially the captain's room!If the centrifugal force of the hull is to reach the gravity of the earth, it must rotate once every 6.3 seconds, and the speed of the captain's room at this time is 79 meters per second!Gravity is 8 times normal!Hmm... For Mr. Okita Shisan, who is seriously ill, this kind of living environment doesn't seem to be suitable?

(Super Saiyan Sun Wukong: "It doesn't matter! I just practiced Super Saiyan 3 under 8 times the gravity! If you go on like this, by the time 296,000 light years have passed, you must have already practiced Super Okita 13'! Come on!" Okita Shisan: "Wow X$#@!...") However, this way of turning still has a lot of shortcomings.First of all, the main gun deck keeps turning over, how to shoot?The launch port of the carrier-based aircraft at the stern is also spinning non-stop (especially in this way because the radius of gyration is small, so the speed needs to be particularly fast!

There is enough centrifugal force! ), it is easy to launch, but it is difficult to return to the ship... And don't forget, when the radius of gyration is changed to such a small one, the "height" of human beings becomes a factor that cannot be ignored!That is to say: the centrifugal force on a person's "head" will be much smaller than that of "feet"! For a person with a height of 170cm, the gravity on his head is only 83% of that on his feet (the radius of gyration is reduced by 170cm). There will be radish legs... Well, no wonder they all wear flared pants... But... Moriyuki... Matsumoto Reiji's beauty becomes like that, it's a bit pitiful... All in all, Yamato uses "centrifugal force" to create gravity , it probably won't work... Try another method!

In the story, all members of the Yamato are "down" in the direction of the bottom of the ship, so if we really want to build an "artificial gravity generating device", it should be that there is this thing on the bottom of the ship to "suck" everyone. (Not only the Yamato, but also all the aforementioned spaceships with gravity devices) But what is "gravity"?According to Newton, things with mass will attract each other at a distance.However, we still don't know how to generate gravity otherwise. (Similarly, science cannot explain how to create "anti-gravity", so the above-mentioned flying methods in the form of anti-gravity are not listed in the discussion of this book.) In this way, to produce "gravity" , or only by "quality".How about putting something equal to the mass of the Earth on the bottom of the ship to create Earth-like gravity?In this way, unless Yamato's engine can push the earth, it will not be able to fly... Another way of thinking, is it possible to make a small "gravity generating device" with high-density matter?If gold is used, it also needs to be 4.9x10 to the 24th power (Captain Okita: "You kill me!")!

Another method is to use the theory of relativity. Objects moving at high speeds have the same effect as huge masses relative to stationary objects.If you let an object move at 99% of the speed of light, for a stationary object, it has 7.1 times the original mass!Using this principle, our Director Riko Yanagida designed the following "artificial gravity generating device": under the Yamato, place an iron ring with a diameter of 200 meters (this is to spread the "gravity" all over the bottom of the ship), The hoop itself is made of iron pillars with a diameter of 2 meters.

(As shown in the picture) In this way, when the rotation speed of the iron ring reaches 99.999999999999943% of the speed of light, the iron ring has a mass relative to the earth!It will let Yamato get the same "downward" gravity as the earth! Having said that, not only the "crew of the Yamato", but also the Yamato itself will be sucked down by this gravity! (It is unreasonable to ask for this kind of "selective gravity" originally...) For this iron ring with the relative mass of the earth, the 260-ton hull of the Yamato will be crushed by this "super gravity" in just a moment. The "giant whetstone" has been ground to dust... I can't think of falling, so the Yamato has no choice but to use the vertical ascent jet engine at the bottom of the ship to resist, and it needs the same force as in the gravity circle on the earth!This is bad for engine output and flight efficiency.In order to consider efficiency, this gravity device should be placed at the stern of the ship, and the jet of the main engine can be used to resist gravity. (As shown in the picture) It looks like the Yamato is being chased by this "super giant whetstone"... But, in this case, the space with gravity in the ship is only the engine area at the stern... and In general spaceflight, as long as the speed reaches the standard, the engine can be turned off, and the inertia can be used to maintain constant speed flight.But our Yamato can't do it!Once the engine is turned off, it will be sucked by the "gravity device" and ground into ashes!The wave cannon is even more useless, the engine must be stopped as soon as it is fired, isn't that the end? (How can there be any need for a wave cannon! Throw this gravity device with "the same relative mass as the earth", which fleet will not escape?) Every day squeezed into the small space of the engine area at the stern, but also to eat The nightmare of "being chased by a huge whetstone", the crew of the Yamato lived such painful days to complete the 296,000 light-year journey...It's so sad, pay tribute to these warriors! (Gujin: "He's fucking! This kind of 'artificial gravity device' ghosts want it!") Second round preview: Kamen Rider No. 1's storm locomotive has a speed of 400㎞ per hour, and V3's cyclone has a speed of 600㎞ per hour. The old man, in 1992, "Tesou EXEDRAFT (the "Superman" once broadcast on Satellite TV's Chinese channel)" came out with a supersonic car with a speed of 3000㎞ (2.5 times the speed of sound!)!Whether it is possible to build a supersonic car, please see the breakdown in the next chapter!