Wjolcz Posted July 9, 2018 Share Posted July 9, 2018 (edited) That's a really good idea actually. Probably better than most of already ongoing Mars simulations. The great thing about this is there are people alreadt there who, if something goes wrong, could send a helicopter and help. They could probably test ISRU fuel production there too and have the BFS fly there and back on its own. I'm just not sure how long it would take to produce that much fuel and if BFS will be capable of doing such hops without the booster. Edited July 9, 2018 by Wjolcz Quote Link to comment Share on other sites More sharing options...
magnemoe Posted July 9, 2018 Share Posted July 9, 2018 1 hour ago, Wjolcz said: That's a really good idea actually. Probably better than most of already ongoing Mars simulations. The great thing about this is there are people alreadt there who, if something goes wrong, could send a helicopter and help. They could probably test ISRU fuel production there too and have the BFS fly there and back on its own. I'm just not sure how long it would take to produce that much fuel and if BFS will be capable of doing such hops without the booster. You should be able to reach southern Argentina, 2000 km or less if you land on the closest part. And yes its an good test. Quote Link to comment Share on other sites More sharing options...
Damien_The_Unbeliever Posted July 9, 2018 Share Posted July 9, 2018 14 hours ago, magnemoe said: Yes, Russia want an rocket who can launch while its cold else it can not launch during winter, you can also except snow or at least drifting snow. US rockets launch from Florida and California there -10 degree centigrade is rare so no reason to include this in the specifications even if I'm pretty sure an Falcon 9 can handle very low temperatures as upper stage has to as its in space and upper and lower stage share lots of components. The pad on the other hand is not designed for it so the water curtains and other water sources are not insulated for one. BFR upper stage has to be able to handle deep space and even mars so it has to handle cold very well. Space isn't cold. It's well insulated, since there's nothing to conduct or convect heat away. There's a reason why radiators on e.g. ISS are huge deals. Quote Link to comment Share on other sites More sharing options...
tater Posted July 9, 2018 Share Posted July 9, 2018 One larger arm installed, and note the large, bouncy castle towed behind. Quote Link to comment Share on other sites More sharing options...
tater Posted July 9, 2018 Share Posted July 9, 2018 Quote Link to comment Share on other sites More sharing options...
Wjolcz Posted July 9, 2018 Share Posted July 9, 2018 (edited) 2 hours ago, tater said: One larger arm installed, and note the large, bouncy castle towed behind. That's the bouncy castle? So I'm guessing stage 2 will have a parafoil too? Edit: I mean, it has to have a parafoil but I thought they won't be catching it like that. 56 minutes ago, tater said: Anything special about this stage? Edited July 9, 2018 by Wjolcz Quote Link to comment Share on other sites More sharing options...
tater Posted July 9, 2018 Share Posted July 9, 2018 1 hour ago, Wjolcz said: That's the bouncy castle? So I'm guessing stage 2 will have a parafoil too? Edit: I mean, it has to have a parafoil but I thought they won't be catching it like that. No one outside SpaceX knows what the rubber craft is for. Maybe they tip net and dump fairing half into it, then catch second fairing? 1 hour ago, Wjolcz said: Anything special about this stage? Telstar 19 stage 2 is the thought for launch July 22. Quote Link to comment Share on other sites More sharing options...
NSEP Posted July 9, 2018 Share Posted July 9, 2018 https://www.nextbigfuture.com/2018/07/x-spacex-raptor-designer-has-ready-for-development-designs-for-nuclear-rocket-that-will-be-2-7-times-better-than-bfr.html?utm_source=quora&utm_medium=referral cool ntr Quote Link to comment Share on other sites More sharing options...
sh1pman Posted July 9, 2018 Share Posted July 9, 2018 5 minutes ago, NSEP said: https://www.nextbigfuture.com/2018/07/x-spacex-raptor-designer-has-ready-for-development-designs-for-nuclear-rocket-that-will-be-2-7-times-better-than-bfr.html?utm_source=quora&utm_medium=referral cool ntr Nice. I had a thought that SpaceX's next rocket after BFR will have NTRs. But air-augmented NTR SSTO? Well, that sounds sufficiently badass. Something that Musk might actually go for. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted July 9, 2018 Share Posted July 9, 2018 6 minutes ago, sh1pman said: Well, that sounds sufficiently badass. Something that Musk might actually go for. Sadly, I think the rest of the current situation makes it a non-starter. People freaked out over launching a few kilos of plutonium for Curiosity, an air-breathing nukyaler rocket?!!!!?!!1!1! Ermagherd! They’re gonna irradiate the chemtrails and kill the vaccinated ozone! Think of the fish-children! Quote Link to comment Share on other sites More sharing options...
sh1pman Posted July 9, 2018 Share Posted July 9, 2018 Just now, CatastrophicFailure said: Sadly, I think the rest of the current situation makes it a non-starter. People freaked out over launching a few kilos of plutonium for Curiosity, an air-breathing nukyaler rocket?!!!!?!!1!1! Ermagherd! They’re gonna irradiate the chemtrails and kill the vaccinated ozone! Think of the fish-children! If it's a closed-cycle design, there shouldn't be any problems with environmentalists. Quote Link to comment Share on other sites More sharing options...
Scotius Posted July 9, 2018 Share Posted July 9, 2018 Aren't Russians allegedly trying to get one such missile working right now? Maybe? Probably? With rather... poor results. This looks like a very, very big challenge for anyone. But hey - if SpaceX will somehow manage to build this thing and get it to work as advertised... then i'm building a shrine to Elon Musk and starting a cult of personality Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted July 9, 2018 Share Posted July 9, 2018 14 minutes ago, sh1pman said: If it's a closed-cycle design, there shouldn't be any problems with environmentalists. Telling them that it’s safe and convincing them that it’s safe are two very different things Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted July 9, 2018 Share Posted July 9, 2018 17 minutes ago, sh1pman said: If it's a closed-cycle design, there shouldn't be any problems with environmentalists. You have more faith in humanity than I do. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted July 9, 2018 Share Posted July 9, 2018 (edited) 19 minutes ago, Scotius said: Aren't Russians allegedly trying to get one such missile working right now? Maybe? Probably? With rather... poor results. They are. But the results are classified, and we can only speculate about them (unless you're a spy and know more than others). It's hard for sure. 15 minutes ago, StrandedonEarth said: Telling them that it’s safe and convincing them that it’s safe are two very different things Should tell them that CO2 pollution from NTR is zero. And that the rocket produces clean, pure, organic water as exhaust. They should be happy. Edited July 9, 2018 by sh1pman Quote Link to comment Share on other sites More sharing options...
Delay Posted July 9, 2018 Share Posted July 9, 2018 1 hour ago, sh1pman said: Should tell them that CO2 pollution from NTR is zero. And that the rocket produces clean, pure, organic water as exhaust. They should be happy. Keep in mind that Cassini's launch caused a protest because of its RTGs. Quote Link to comment Share on other sites More sharing options...
NSEP Posted July 9, 2018 Share Posted July 9, 2018 Apparently even closed-cycle nuclear turbojet things spew out tiny fragments of nuclear waste. Not sure if its true however, but i don't think it will eject enough nuclear waste to turn us into super alien zombies, unfortunately. One dust particle is enough to flip out environmentalist. Quote Link to comment Share on other sites More sharing options...
Wjolcz Posted July 9, 2018 Share Posted July 9, 2018 (edited) Air-augmented super heavy NTR SSTO? Are the 60s back? I'm skeptical. It's probably not impossible but I need to see it first. Edited July 9, 2018 by Wjolcz Quote Link to comment Share on other sites More sharing options...
magnemoe Posted July 9, 2018 Share Posted July 9, 2018 25 minutes ago, Delay said: Keep in mind that Cassini's launch caused a protest because of its RTGs. Anything will cause some people to protest. Ignore it unless its an large protest. Having said that neither Russia nor China has developed nuclear thermal even if they don't have this issue. Problem with nuclear thermal is that its an pretty heavy engine so you need an heavy payload. Manned moon mission or an heavyweight probe missions like an Europa sample return for it to make sense. Same is true in KSP, you don't use LV-N on small probes. Quote Link to comment Share on other sites More sharing options...
cubinator Posted July 10, 2018 Share Posted July 10, 2018 27 minutes ago, magnemoe said: Problem with nuclear thermal is that its an pretty heavy engine so you need an heavy payload. Considering the ship would be bigger than BFR...We wouldn't be using this until even BFR is too small for us. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted July 10, 2018 Share Posted July 10, 2018 1 minute ago, cubinator said: Considering the ship would be bigger than BFR...We wouldn't be using this until even BFR is too small for us. the Apollo missions would benefit and nuclear was discussed. but would take to long to develop. note that even I is skeptical for using them on reusable ground launches. Quote Link to comment Share on other sites More sharing options...
insert_name Posted July 10, 2018 Share Posted July 10, 2018 https://www.teslarati.com/nasa-spacex-bfr-study-space-telescope-luvoir/ Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted July 10, 2018 Share Posted July 10, 2018 58 minutes ago, insert_name said: https://www.teslarati.com/nasa-spacex-bfr-study-space-telescope-luvoir/ And just thing, when LUVOIR drifts sedately from the BFS’s cargo bay, JWST will only be 3 years away! Quote Link to comment Share on other sites More sharing options...
Scotius Posted July 10, 2018 Share Posted July 10, 2018 18 meters mirror in space *twitches*. Can you imagine photos such beast will be able to take? Quote Link to comment Share on other sites More sharing options...
tater Posted July 10, 2018 Share Posted July 10, 2018 Quote Link to comment Share on other sites More sharing options...
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