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Everything posted by Rakaydos
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The TUFROC deal was made well before Elon's recent revelations about "heavy but strong" metallic structure.
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Which Method of FTL Travel is the Most Believable?
Rakaydos replied to JMBuilder's topic in Science & Spaceflight
The issue is that your wormhole ends can be in the same space at different times. So you can go in one end of the wormhole, come out the other side, earlier, then GO BACK INTO THE FIRST END (again, before you went in the first time) to go further back in time. Hey, there's still i-vector thrust to sidestep lightspeed... -
Titanium heat shield hull is the leading contender, IMO.
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Which Method of FTL Travel is the Most Believable?
Rakaydos replied to JMBuilder's topic in Science & Spaceflight
I'm also something of a fan of the FTL in Old Man;'s War. Basically, they jump into a parralel dimention formed by the decay of a quantum superposition somewhere in the nearly infinite universe. Since it's easier to reach universes closer to our own, that one Schrodinger's atom is the only difference between the universes. But you arrive in the dimension in a different place than alternate-you (who, odds are, do not contain that Schrodinger atom) left the dimension, giving you EFFECTIVE FTL. -
Which Method of FTL Travel is the Most Believable?
Rakaydos replied to JMBuilder's topic in Science & Spaceflight
Negative velocity doesnt make sence. Do you mean Imaginary velocity? it's a bit complicated to explain, but adding a Sqrroot(-1) component to your velocity lets you sidestep the worst of the time/mass dialation related to acceleration to lightspeed, letting you re-merge with "normal" space on the other side of the light barrier. It was in novels I read by a physisist, Cathrine Asaro. -
I recall reading a different theory that explains negative matter in a way that is mutually rebelled by positive matter, but is attracted to other negative matter. Janus cosmological model, or something. Basically, if positive mass is a bunch of beach balls on a rubber sheet, negative mass is a bunch of helium balloons UNDER the rubber sheet. the beach balls clump up in depressions, the baloons clump up in reliefs, and the depressions and reliefs try to stay as far apart as possible.
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NASA launches safety investigation of SpaceX and Boeing
Rakaydos replied to mikegarrison's topic in Science & Spaceflight
revisionist nothing. Nixon famously taped his secret meetings, so we can listen to the decision being made and why, for all posterity. http://www.csdp.org/research/nixonpot.txt Edit: Chris Bergen, of NSF: https://forum.nasaspaceflight.com/index.php?topic=46837.msg1878878#msg1878878 -
I prefer this approach, but my biggest concern is that each F9 leg is designed to handle 1/4 the core's weight. Your design only has room for 6 legs on 7 cores, more than a 75% reduction in leg-per-mass.
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That doesnt actually need to follow. They can be attached at the BFS, with a FH-style decoupler spar at the base.
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It doesnt have to sit on just one F9 core. 7 stage separation pushers on the booster, each one to a Raptor bell. Just put 1 pusher per Falcon core.
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When the first BFS tank dome was complete, SpaceX probably threw a little party. And someone put a party hat on the tank dome to celebrate. When he saw it, Musk got quiet, then he called over his engineers, then someone from the carbon fiber line. The party fizzled out. Now BFR is moved to the LEFT, falcon second stage reuse is canceled,and we're hearing about a radical redesign.
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It cant be too simple- in order to be a reasonable heat shield test, it has to match balistic coefficent with a much larger BFS.
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At a significantly reduced rate, especially if the ship stays nose on to the sun. And when that's not enough, I mentioned the solution in the part of the post you deleted.
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Vent the main tank to vacuum to thermus the header tanks with no solar irradiation. Any additional cooling will require bleedoff.
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...You mean a deployale solar collecter, right?
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Out of curiosity, what would be the spread of overlapping red/green lasers from LEO or GEO to the surface? Would it be plausable to illuminate a single street with an orbital laser array? (assuming it was never cloudy)
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Anyone remember the last crypitic tweet, about the Cyborg Dragon?
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I'm not sure I would consider it thought control. It's an extra stimulus, but the reciever makes their own decisions as to what the stimulus means. The testers even threw in some malicius interference, and the human reciever did a remarkable job sorting real transmissions from repurposed bovine waste.
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I'm pretty sure tampering with stock price by making claims about changes in company status (taking Tesla private) is an entirely different level than PR footage.
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Because it's research that can be done for pocket change, relative to everything else they're doing, that can significantly reduce their cost for each launch they are being paid for.
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At basic training, before all the training that make soldiers so great, my company's barracts fit two rows of 25 bunk beds (with lockers) in a smaller volume than BFR, and that was with full gravity.