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REVIEW: Knights of Sidonia

I'm not sure if it's the review or the show/manga, but that makes no sense (unless there's one unit with much higher trust power than the others). But if all the unit are the same, grouping up would not increase there trust since they all weight the same. If you apply a force on an object you'll get the same acceleration than applying twice the force on an object being twice as heavy, F=M*A and all (2*F=2*M*A, the 2 cancel and you're back to F=MA). They could get a range increase if there truster can only go at 0 or max speed, and by grouping up they only have one unit use it's booster at a time, but they'd accelerate way slower. I'm probably just reading it wrong thought.

Barbobot wrote:

meiam wrote: Quote: and mecha traveling long distances in space unite in clusters to gain a collective speed and range boost. What? You know how the mechas would group up and all speed off together? This was because with the combined thrust they could travel farther distances faster than a single unit could by itself.

I'm not sure if it's the review or the show/manga, but that makes no sense (unless there's one unit with much higher trust power than the others). But if all the unit are the same, grouping up would not increase there trust since they all weight the same. If you apply a force on an object you'll get the same acceleration than applying twice the force on an object being twice as heavy, F=M*A and all (2*F=2*M*A, the 2 cancel and you're back to F=MA). They could get a range increase if there truster can only go at 0 or max speed, and by grouping up they only have one unit use it's booster at a time, but they'd accelerate way slower. I'm probably just reading it wrong thought.

(Emphasis mine) I am not an expert on physics, but the units are weightless in space, so it's all about momentum, isn't it? (I honestly don't know how it works...)

I'm really against the C+ story rating considering that Attack on Titan, which as we've been over is (more likely than not) inspired by Sidonia, and as such has an incredibly similar story in a fantasy setting (This of course can be attributed to the fact different people reviewed them, but I don't really take that as a good enough excuse).

If you boil Sidonia down to it's most basic story elements of course it's going to sound generic, anything does if you take away the story elements that make it unique.

His major lack of defining personality or identity, his horrendously awkward and oblivious interactions with the other people on the ship showed what his years of isolation had done to his social skills, more than likely his grandfather taught him little more than how to speak when it came to communication, as training Tanikaze to kill Gauna was top priority. This combined with not being photosynthetic like most of Sidonia's inhabitants, and his being an outcast because of his origins, makes Tanikaze one of the most (intentionally) socially inept Mecha characters that I can thin of.

Also, two things on Lala
1. You're questioning a talking bear in a show with Giant Mechs, space travel, immortality, cloning, a third biological gender, and shapeshifting hell beast from space?

#820119 wrote:

When it comes to MY THOUGHT PROCESS, in the Neon Genesis Evangelion area / Knights of Sidonia area...The gauna being killed by a specific spear like weapon(think it was a three letter word that started with E) = Lucifer(the one with the seven eye 'face') that was impelled by the lance of longinus(may have mis spelled this word). So yeah... while watching KoS, and seeing the gauna get killed by a specific only spear/material, made me think of lucifer being impelled by the lance of longinus in NGE.

spoiler[The Angel inside Terminal Dogma is Lilith, not Lucifer. I don't think there was even an Angel named "Lucifer" in Evangelion.]

The spear in Sidonia is a Kabizashi, and the Gauna are surrounded Ena.

The relation F=MA is valid only when the Mass of a system is a constant. Hint : it doesn't not apply to rockets that surprise surprise have a varying mass and guess what ? Part of the mass of the rocket is converted into thrust. The correct relation is dP/dt = F where P is the total momentum. The more mass is converted into thrust the greater the acceleration the faster you go. Therefore what is depicted in the anime is scientifically correct. And we have seen that Gardes actually can go out of fuel. The more Gardes you put together, the greater the mass but also the greater the mass that is converted into thrust (the available fuel). Hence higher speed and longer range.


Ps : if you want a real life example of putting together identical systems to generate higher thrust just look at the famous soviet N-1 moon rocket (the first stage was composed of 30 rockets all connected together in contrast to the Saturn 5). It never got to the moon because the engineers couldn't resolve the synchronization problem between the tens of engines. But the concept was/is scientifically sound.

Also this effect is very important in rocket because most of the rocket is fuel and fuel tank part, which are discarded as the rocket is send in space. But the mech in the show have most of there mass in there limb/weapon and such, fuel would only be a very small part of the overall mass. The exact same effect is present when we drive car, but we don't really take it into account since the weight of the car isn't mostly located in the fuel tank.

meiam wrote:

Also this effect is very important in rocket because most of the rocket is fuel and fuel tank part, which are discarded as the rocket is send in space. But the mech in the show have most of there mass in there limb/weapon and such, fuel would only be a very small part of the overall mass. The exact same effect is present when we drive car, but we don't really take it into account since the weight of the car isn't mostly located in the fuel tank.

Perhaps the Gardes are made of a super-lightweight, yet strong, alloy, and most of their mass does come from their fuel. It's never said the mechs are made of steel, is it?

Pretty sure that the theory only works if the Gardes' weight is "mostly" fuel, but I haven't run the numbers.

But we're making even more of a fundamental assumption that the thrusters work using basic rocket principles.

I would say it's more likely that they use some kind of combination rocket + Higgs particle magic that super accelerates the exhaust (maybe by warping space a little bit), and that the Higgs magic effect is what is magnified by combining into formation.

If they are based more on a wave resonance idea then that sort of formation could allow a larger particle wave and thus a larger effect.

^To be fair, I really enjoyed the show and its take on tropes and I am not a mecha fan. It has a hard scifi feel more than mecha or space opera (which tend to mix magic with their scifi). Take that as you will.

I agree. I need more of these types of hard sci-fi shows btw. Someone send me recommendations.