tater Posted February 2, 2019 Share Posted February 2, 2019 2 hours ago, Nightside said: Yeah that’s the one. Hard to say how close the guy is to the Raptor, he is probably not right underneath it. True, it looks like he's really, really close, perhaps touching it, but maybe he's a few m away. Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted February 2, 2019 Share Posted February 2, 2019 24 minutes ago, Xd the great said: Wonder how that will look. Like building a grain silo? Quote Link to comment Share on other sites More sharing options...
Spaceception Posted February 2, 2019 Share Posted February 2, 2019 39 minutes ago, Xd the great said: Wonder how that will look. Maybe only the core engines at first? It's a grasshopper-esque rocket too, right? And then they could have placeholder engines to simulate the rest of the weight. Quote Link to comment Share on other sites More sharing options...
SuperFastJellyfish Posted February 2, 2019 Share Posted February 2, 2019 (edited) 56 minutes ago, tater said: True, it looks like he's really, really close, perhaps touching it, but maybe he's a few m away. Look at the dude on the right in this one. Edited February 2, 2019 by SuperFastJellyfish fixed the link Quote Link to comment Share on other sites More sharing options...
tater Posted February 2, 2019 Share Posted February 2, 2019 36 minutes ago, SuperFastJellyfish said: Look at the dude on the right in this one. Didn't even notice him. Much better. Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 2, 2019 Share Posted February 2, 2019 Will carbon soot get stuck in the pores of the heat shield? Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted February 2, 2019 Share Posted February 2, 2019 2 hours ago, SuperFastJellyfish said: Look at the dude on the right in this one. Spoiler Carbon, soot Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 2, 2019 Share Posted February 2, 2019 5 hours ago, Spaceception said: Maybe only the core engines at first? It's a grasshopper-esque rocket too, right? And then they could have placeholder engines to simulate the rest of the weight. Falcon 9 block 6: Literally a superheavy hopper. Quote Link to comment Share on other sites More sharing options...
NSEP Posted February 2, 2019 Share Posted February 2, 2019 13 hours ago, Xd the great said: Will carbon soot get stuck in the pores of the heat shield? No, don't think so. A Methane-Oxygen combustion reaction produces only Carbon Dioxide and Water, no pure Carbon, unlike Kerosene/RP-1 Quote Link to comment Share on other sites More sharing options...
sh1pman Posted February 2, 2019 Share Posted February 2, 2019 6 minutes ago, NSEP said: No, don't think so. A Methane-Oxygen combustion reaction produces only Carbon Dioxide and Water, no pure Carbon, unlike Kerosene/RP-1 I think @Xd the great was talking about pyrolysis, not oxidation. Also, methane-oxygen reaction only produces CO2 and H2O if it’s complete, which isn’t always the case. Quote Link to comment Share on other sites More sharing options...
Starman4308 Posted February 2, 2019 Share Posted February 2, 2019 4 hours ago, NSEP said: No, don't think so. A Methane-Oxygen combustion reaction produces only Carbon Dioxide and Water, no pure Carbon, unlike Kerosene/RP-1 You also get carbon monoxide at the very least, and there's quite possibly still some coking to solid carbon. To get pure CO2 exhaust, you need excess oxygen, and probably also relatively low flame temperatures (as high temperatures favor more mixed combustion products). Quote Link to comment Share on other sites More sharing options...
tater Posted February 3, 2019 Share Posted February 3, 2019 Elon’s plane just landed in Waco. Looks like they’re gonna fire Raptor soon. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted February 3, 2019 Share Posted February 3, 2019 15 minutes ago, tater said: Elon’s plane just landed in Waco. Looks like they’re gonna fire Raptor soon. Waco and fire don’t exactly have the best history together... Quote Link to comment Share on other sites More sharing options...
Spaceception Posted February 3, 2019 Share Posted February 3, 2019 23 minutes ago, tater said: Elon’s plane just landed in Waco. Looks like they’re gonna fire Raptor soon. I wonder what the burn duration will be. And I hope he or SpaceX shares it. Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 3, 2019 Share Posted February 3, 2019 2 hours ago, Spaceception said: I wonder what the burn duration will be. And I hope he or SpaceX shares it. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted February 3, 2019 Share Posted February 3, 2019 Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 3, 2019 Share Posted February 3, 2019 Kaboom incoming. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted February 3, 2019 Share Posted February 3, 2019 57 minutes ago, Xd the great said: Kaboom incoming. no kabooms pls Quote Link to comment Share on other sites More sharing options...
MaverickSawyer Posted February 3, 2019 Share Posted February 3, 2019 If there's a kaboom, would we hear about it? Quote Link to comment Share on other sites More sharing options...
Scotius Posted February 3, 2019 Share Posted February 3, 2019 40 minutes ago, sh1pman said: no kabooms pls Yes, a nice long "FWWWOOOOOOOOSSSSSSSHHHHHHH!!!!" is much more preferable. Though... let's be honest here - we are wondering about the same thing right now: Does it smell like a fart, or not? Quote Link to comment Share on other sites More sharing options...
sh1pman Posted February 3, 2019 Share Posted February 3, 2019 2 minutes ago, Scotius said: Though... let's be honest here - we are wondering about the same thing right now: Does it smell like a fart, or not? It runs on liquid farts, so I guess it smells like burnt farts Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 3, 2019 Share Posted February 3, 2019 22 minutes ago, sh1pman said: It runs on liquid farts, so I guess it smells like burnt farts Smelly or not smelly? Quote Link to comment Share on other sites More sharing options...
Codraroll Posted February 3, 2019 Share Posted February 3, 2019 Unless there's a lot of sulphur in the exhaust for some reason, it won't smell like farts, at least. Quote Link to comment Share on other sites More sharing options...
tater Posted February 3, 2019 Share Posted February 3, 2019 5 hours ago, MaverickSawyer said: If there's a kaboom, would we hear about it? Yeah, there are people who live nearby who post stuff that happens at McGreggor. Quote Link to comment Share on other sites More sharing options...
IncongruousGoat Posted February 3, 2019 Share Posted February 3, 2019 (edited) 21 hours ago, NSEP said: No, don't think so. A Methane-Oxygen combustion reaction produces only Carbon Dioxide and Water, no pure Carbon, unlike Kerosene/RP-1 At low temperatures and with a stoichiometric fuel/oxidizer ratio, mostly yes. At the kinds of temperatures and pressures Raptor will be running at, and with the fuel-rich fuel/oxidizer ratio it uses, you'll have some CO2 and H20 in the exhaust, but you'll also have some OH, CO, H2, O2, C, H, and O (and yes, some of those species are free radicals). High-temperature, high-pressure combustion is a messy process. Edited February 3, 2019 by IncongruousGoat Quote Link to comment Share on other sites More sharing options...
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