2013-09-20, 18:30 | Link #9261 | ||
Junior Member
Join Date: Dec 2005
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That does not apply to a mobile suit with a suitable propulsion, like the Freedom. The fact that the Freedom can achieve sustained flight means it can already counter Earth's gravitational pull. In order to reach space, it just needs enough of the right kind of fuel to keep its propulsion going until it reaches its destination. Quote:
That said, this was an unusual circumstance. Under normal circumstances, even if a mobile suit can go to space on its own power, it would probably still be better to use a ship. |
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2013-09-20, 18:32 | Link #9262 |
Goat Herder
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Join Date: Jun 2008
Age: 36
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The Archangel needed both positronic interference to cut away air resistance AND mount more boosters onto it to achieve escape velocity without the aid of a mass accelerator. There's no way the Freedom could reach space on its own.
Hell, the only mobile suits that can do that in the entire Gundam franchise I think would be the Turn A Gundam, 00 Qan[T], and Sakibure, and they can only do that by teleporting!
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2013-09-20, 18:50 | Link #9264 | |
Dark Energy
Join Date: Sep 2010
Location: United States
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Look, it's not a question of sustained propulsion or initial speed. Escape velocity is an absolute. You can't just counter gravitational pull by using any thruster firing long enough, you need very specific requirements before you can even think about trying it. The first thing you need is a thrust to weight ratio greater than 1; very very few things have it; I don't think even 5th generation fighters do. Once you have that ratio, you need to go straight up at a 90-degree angle the entire way. Not only does that require stupid amounts of reaction mass, anything less will just put you into orbit, not out of the atmosphere. The third thing you need is fuel. It's called a delta-v budget, and there's a reason the rocket science community has the saying "if you can escape Earth's gravity, you're already halfway to anywhere in the universe." Most rocket designs vote more than 90% of their mass just to the reaction mass, and most of that is just getting out of the atmosphere. It doesn't matter how long the Freedom can thrust if it's thrusters can't accelerate it to escape velocity before it runs out of fuel. It has a nuclear reactor; that doesn't mean it has nuclear thrusters, let alone enough re-mass to make it all the way to escape velocity. There's nothing to indicate it does have nuclear thrusters, so we can safely assume it's using conventional rocket thrusters, which puts it solely within the realm of conventional 20th century limitations. We'd be here until the end of time if we kept working by the assumption of "can until something says it can't." Especially where the Freedom and Strike Freedom are concerned. Err... so? You're not taking into account the reactors and power source that can be slapped on a ship. Aerodynamics don't really mean anything here. With enough thrust, even a brick will fly.
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2013-09-20, 18:51 | Link #9265 | |
Senior Member
Join Date: Jun 2007
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In the case of Lacus going into space though the Freedom was still in the atmosphere and the shuttle was still picking up speed. So there is still time for Kira to catch up for a short period to just exchange a few words.
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2013-09-20, 19:01 | Link #9266 |
Goat Herder
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Join Date: Jun 2008
Age: 36
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It's a top-of-the-line combat weapon, not a top-of-the-line space rocket. It's top-of-the-line abilities are in its mobility, defensive capabilities, weapon systems, computer systems, and reactors. Not pure thrust. There's just simply no way, with physics as they are now and how they are in CE, that the Freedom could reach space on its own. The animation we got was another discrepancy produced by Destiny's lack of trying.
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2013-09-20, 19:31 | Link #9267 | ||
Junior Member
Join Date: Dec 2005
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Escape velocity depends on the mass of the object and the distance from that object's center of gravity. The escape velocity on the earth's surface is much higher than the escape velocity in low orbit.
But that's beside the point, which is that escape velocity is only needed to escape Earth's gravitational field without further propulsion. The Freedom is not trying to escape Earth's gravitational field. It's trying (well, Kira intended) to escape Earth's atmosphere. Even the PLANTs are still within Earth's gravitational field. Quote:
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2013-09-20, 19:33 | Link #9268 |
Senior Member
Join Date: Feb 2008
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Considering he clearly starts lagging behind and the radio starts to break up, I think he could only follow it up so high. Assuming he was going to go with them he would have had to grab onto the shuttle like he did Kusanagi.
I mean if Freedom could just leave the atmosphere as it pleased then there would have been no need to steal the shuttle in the first place. Kira could have just ferried Lacus up to where she needed to go in Freedom. |
2013-09-20, 19:41 | Link #9270 | |
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Join Date: Jun 2007
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2013-09-20, 19:48 | Link #9271 | |
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Join Date: Feb 2008
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And they couldn't have been thinking that even Kira leaving for a little while would be too dangerous for AA because Kira does just that here, and did it before when he took Freedom to go meet with Athrun, and he'll do it next ep when he goes to pick up Milliaria. Just tell AA to stay put underwater, take Lacus and Andy up, to the point where they ditch the shuttle, and head back to AA. |
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2013-09-21, 00:14 | Link #9272 | ||||
Dark Energy
Join Date: Sep 2010
Location: United States
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2013-09-21, 00:43 | Link #9276 | |
Goat Herder
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Join Date: Jun 2008
Age: 36
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So, again, no.
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2013-09-21, 01:06 | Link #9277 | |
2LMES
Join Date: May 2012
Location: a comet that goes zooom!!!
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and i don't remember any atmospheric interference with Luna shooting, she missed.
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2013-09-21, 01:15 | Link #9278 |
Banned
Join Date: Jul 2013
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Whatever Gundam series is using for rocket fuel it's sure as hell is alot better than any propellant we have now. Hundreds of times even. And the rockets tend to at the very least have a 1/1 thrust/weight ratio even for the most basic fighter. As a series progresses in technology, thrust/weight ratios triple or quadruple on the high end. The implication being that the only thing stopping everyone from taking joyrides into space is that as good as the fuel is that they are using, they don't carry enough of it to break atmosphere and achieve escape velocity.
P.S. Old work horses like the F-16 and F-15 had positive thrust/weight ratios even carrying all their gear. It's not a hard thing to achieve. |
2013-09-21, 01:17 | Link #9279 | |
Goat Herder
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2013-09-21, 01:31 | Link #9280 | ||
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mecha, seed it and weep |
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