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About Spacescifi

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  1. Thanks for the knowledge! Yeah...lasers ARE useful. If you have the patience. For gamers they would have to time warp the lasing while occasionally monitoring crew food supply just make sure they don't starve LOL while waiting. In real life yeah, totally kills lasers as space weapons apart from the bomb pumped lasers which won't be cheap by any means anyway. Too weak, and take too long.
  2. The interesting data is the required radius or length of a spaceship or tether pods to do 1g rotation at 1 RPM (one revolution per min). 100 meter disc spaceship radius OR 100 meter long tether pods or 100 meter long spaceship with crew only living on the ends. Take your pick out of three. Elon's spaceship is slightly over 100 meters long, so he has the option of rotating tge entire ship and putting tge crew at the ends or extending 100 meter tether pods before spin. The first option is arguably less complex. This ONLY works if his spaceship is over 100 meters long
  3. Perhaps not. That is what they do in space sims like Oolite before making them small enough to scoop. Yet I also reckon that it would be faster to break up a large rock to scoop than take all day drilling when you are not sure what's inside...unless we have ways of knowing that too. Maybe beaming it with x-rays will tell you what it has inside I don't know.
  4. Re space sims; I personally find adding a realistic angle on asteroud mining to only add to the gameplay factor. I can also tell you that playing oolite trying to chase down broken asteroids is a pain in the butt, made even worse by airplane maneuvering in space since newtonian is not allowed. Despite the fact they are slow boulders broken up. Lasers are best for burning, since pulse lasers are the kind of thing NIF uses to ignite nuclear fusion. By the time you can lase pulse blast ANYTHING solid you are into station base power levels, and your vessel would be so heavy with rea
  5. I find it disturbing how in space sims overpowered lasers can blast an asteroid into bits. For a LOT less energy one could do the SAME thing with railgun cannons. So to me, railguns and netting are the easiest way I know of to break up small asteroids for mining. Now if is a BIG asteroid? Do what Bruce Willis did. Drill and bore via an auger to create shafts down deep into the asteroid. Insert nukes. Fill up shafts with asteroid debris dust so nukes are surrounded by reaction mass. Detonate. See big rock separate into little rocks. Repeat as desired until the rocks
  6. So you're point is that due to power inefficiency of lasers, they will never make much viable use for asteroid mining, and even less for space combat. They are best used in factories on worlds with chemicals readily available to power it. Might as well fly up to a space rock and pop out a drill and net to catch loose chunks while the mothership attaches itself with tethers and landing legs to the rock. To not need radiators you would need perfect blackbody mirrors that reflect all your blackbody radiation out. Interesting article: https://physics.stackexchange.c
  7. Wow. He even tackled a blond office lady! Funny and shocking all at once. But yeah...I can see klingons being a bit more mild than this guy...unless they already intend to kill, it is kind of cowardly and dishonorable to tackle a female...at least if the klingon actually follows the Klingon ethos. Not all do.
  8. The old TNG/DS9 Klingons are mainly good for jokes I think...so here goes. I used to work at a nearly all Klingon office. I was one of two humans who worked there. Working for Klingons has it's pro's and con's: Pro: They don't terminate anyone's employment. Con: They either allow you to quit in dishonor or fight whoever wishes you to quit the job in battle...surrounded by a ring of fire while armed with bat'leths while the workmates watch as spectators. Whoever surrenders or dies first loses their job. In short...the boss is ALWAYS a tough guy...otherwise he cou
  9. Bravo! You just killed the scifi trope of space laser combat! No lasers in Elite dangerous! No lasers in Children of a Dead Earth! Since they would run out of chemical too soon and do too little damage in the process. Granted, ED is total fiction...they probaby use sustained fusion to power their lasers ingame. Children Of a Dead Earth does not have that to rely on, so they probably rely on free electron lasers or something non-chemical. https://en.m.wikipedia.org/wiki/Free-electron_laser https://www.google.com/amp/s/www.wired.com/2011/02/unexpectedly-navys-superl
  10. I see. Thanks. So I suppose the only thing a nuclear reactor could do to booste a chemical laser is heat up the chemicals prior to whatever reaction is used to power the laser. The irony is that the chemical would probably have to be burned like propellant in the process...so not efficient. With chem lasers do you actually run the risk of running out of chemical? Does it vape away or something? EDIT: Answered. The USA airforce laser recirculates the chemical so it never runs out. Can fire so long it does not overheat. Virtually unlimited zapping. Yet acco
  11. What if we someday find a way to convert 99% of nuclear reactor power into a laser pulse? Would still be too weak with two reactors? So that the best you could do is slowly scorchan asteroid?
  12. Forget the politcal angle for discussion and let us discuss the physical challenges. Lens radius: Five meters wide Power: Two nuclear reactors. Challenges: Lasers are hardly the most efficient invention. They make a lot of waste heat, and that will need to be shed via radiator fins. That is overlooked I think when high yield repeat use space lasers are considered. Main Question: What is the most powerful laser we could put in orbit on a spacecraft that we still wished to move under it's own thrust? Bonus Question: What is it's effective burn range? Given the 5
  13. Thanks...regarding the heat, that seems solved actually. You WANT the heat. Laberge suggests a vortex of liquid lead and firing the plasma down the empty tunnel created by the liquid lead vortex, then compressing it rapidly (60 times a second). The liquid lead exchanges heat with heat exchangers to drive a steam turbine which also powers the pistons. The only heat issue I predict is perhaps the plasma melting the injectors, since the walls of the chamber are otherwise surrounded by liquid lead which will protect them anyway. The only problem Laberge still h
  14. Answered and fixed: https://en.m.wikipedia.org/wiki/Time_dilation
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