tater Posted December 18, 2018 Share Posted December 18, 2018 Quote Link to comment Share on other sites More sharing options...
sh1pman Posted December 18, 2018 Share Posted December 18, 2018 Why didn’t they keep extendable solar arrays, like those on Dragon 1? Cheaper to make fixed ones? More reliable? Quote Link to comment Share on other sites More sharing options...
tater Posted December 18, 2018 Share Posted December 18, 2018 It's certainly one fewer failure mode. It's impossible to not have solar deploy. Quote Link to comment Share on other sites More sharing options...
Nightside Posted December 18, 2018 Share Posted December 18, 2018 It looks like it has shoes on! Quote Link to comment Share on other sites More sharing options...
Barzon Posted December 18, 2018 Share Posted December 18, 2018 ARGH! It's so darn SHINY!!!! Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted December 18, 2018 Share Posted December 18, 2018 It is hard for the eye to figure out what it’s seeing. So they covered half of the trunk with shiny solar cells? Quote Link to comment Share on other sites More sharing options...
cubinator Posted December 18, 2018 Share Posted December 18, 2018 13 minutes ago, StrandedonEarth said: It is hard for the eye to figure out what it’s seeing. So they covered half of the trunk with shiny solar cells? Yes. Top half is covered in dark solar cells. Quote Link to comment Share on other sites More sharing options...
tater Posted December 19, 2018 Share Posted December 19, 2018 The white half of the trunk is radiators, I think. Quote Link to comment Share on other sites More sharing options...
mikegarrison Posted December 19, 2018 Share Posted December 19, 2018 This of course adds an orientation requirement. Quote Link to comment Share on other sites More sharing options...
cubinator Posted December 19, 2018 Share Posted December 19, 2018 1 hour ago, mikegarrison said: This of course adds an orientation requirement. I wouldn't say that's a new thing. Dragon 1 has to keep a petty precise orientation while approaching the station and before being grappled by Canadarm. Quote Link to comment Share on other sites More sharing options...
mikegarrison Posted December 19, 2018 Share Posted December 19, 2018 1 minute ago, cubinator said: I wouldn't say that's a new thing. Dragon 1 has to keep a petty precise orientation while approaching the station and before being grappled by Canadarm. Yeah, but I meant for the rest of the flight. Quote Link to comment Share on other sites More sharing options...
tater Posted December 19, 2018 Share Posted December 19, 2018 2 hours ago, mikegarrison said: This of course adds an orientation requirement. True, that or as a crew vehicle, it's intended to have a BBQ spin (as Apollo did) for thermal management. As failure modes go, this is fine. A failure of solar panel deployment likely sends them home immediately, A failure to be able to maintain any attitude at all, is also an abort situation (can't dock if you can't point accurately). With the always deployed panels, there is just the one failure mode, and it would be a failure anyway. Quote Link to comment Share on other sites More sharing options...
KevinSalyer Posted December 19, 2018 Share Posted December 19, 2018 XLR81 was a gas generator, true. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted December 19, 2018 Share Posted December 19, 2018 So, big question. Does it not have a heat shield on these photos? PICA-X is supposed to be black, and it should be covering the insides of SuperDraco pods and bottom of the capsule. It's like that on SpaceX renderings of Dragon 2. But on these photos there's just metal. Quote Link to comment Share on other sites More sharing options...
Jaff Posted December 19, 2018 Share Posted December 19, 2018 12 hours ago, CatastrophicFailure said: I think that’s so they don’t burn the fins off with the SuperDracos in a low-altitude abort... which would be a really, really bad time to have your fins burnt off. Your logic has no place here! Lol looks much better from the other side. On a B5 booster the black and white scheme is gonna look mighty fine Quote Link to comment Share on other sites More sharing options...
DDE Posted December 19, 2018 Share Posted December 19, 2018 13 hours ago, Jaff said: Is anyone else also really really irritated by the fact they obviously have 4 way symmetry on in the VAB to build the capsule but rotated it 45 degrees when they attached the trunk?! it looks like 3 way symmetry! Also so is it me or is that trunk a seriously off white colour? You need the three way symmetry for @Nertea‘s surface-mounted solar arrays. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted December 19, 2018 Share Posted December 19, 2018 6 hours ago, tater said: True, that or as a crew vehicle, it's intended to have a BBQ spin (as Apollo did) for thermal management. As failure modes go, this is fine. A failure of solar panel deployment likely sends them home immediately, A failure to be able to maintain any attitude at all, is also an abort situation (can't dock if you can't point accurately). With the always deployed panels, there is just the one failure mode, and it would be a failure anyway. Don't think it will spin as it has solar panels on one side and radiator on the other. Else you are right is that if they could not control the craft enough for pointing the solar panels towards the sun you can not dock. Just deorbiting would be hard enough. Quote Link to comment Share on other sites More sharing options...
NSEP Posted December 19, 2018 Share Posted December 19, 2018 3 hours ago, sh1pman said: So, big question. Does it not have a heat shield on these photos? PICA-X is supposed to be black, and it should be covering the insides of SuperDraco pods and bottom of the capsule. It's like that on SpaceX renderings of Dragon 2. But on these photos there's just metal. Dragon 1 also has a metallic looking heatshield (cover?): I don't exactly know why the heatshield isn't exposed, but im geussig its some sort of paint/cover to protect the heatshield from being exposed to the sun for too long. Quote Link to comment Share on other sites More sharing options...
RedKraken Posted December 19, 2018 Share Posted December 19, 2018 Quote Link to comment Share on other sites More sharing options...
DDE Posted December 19, 2018 Share Posted December 19, 2018 1 hour ago, NSEP said: Dragon 1 also has a metallic looking heatshield (cover?): I don't exactly know why the heatshield isn't exposed, but im geussig its some sort of paint/cover to protect the heatshield from being exposed to the sun for too long. Heat shields don’t like the thermal gradients in vacuum. This is why Apollo 13 didn’t ditch the dead SM. Quote Link to comment Share on other sites More sharing options...
tater Posted December 19, 2018 Share Posted December 19, 2018 I scrolled past the scrub tweet. Hmmm. Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted December 19, 2018 Share Posted December 19, 2018 4 hours ago, RedKraken said: B1054: “Boss? I... I can’t feel my legs, boss. Where’s my legs, boss? And my arms fins are numb... where’s my grids?!? I have no grids! Something is very wrong here boss...” Yeah, I’d say they have some unusual sensor readings... Quote Link to comment Share on other sites More sharing options...
magnemoe Posted December 19, 2018 Share Posted December 19, 2018 2 hours ago, DDE said: Heat shields don’t like the thermal gradients in vacuum. This is why Apollo 13 didn’t ditch the dead SM. I thought it was as it still provided some services. Anyway dragon uses an different heat shield but you also want the heat shield-decopler-trunk to be aerodynamic Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted December 19, 2018 Share Posted December 19, 2018 (edited) 26 minutes ago, StrandedonEarth said: B1054: “Boss? I... I can’t feel my legs, boss. Where’s my legs, boss? And my arms fins are numb... where’s my grids?!? I have no grids! Something is very wrong here boss...” Yeah, I’d say they have some unusual sensor readings... Dangit, you’ve wormed this into my head: [cue chunky speed metal riff] Darkness, imprisoning me, all that I see, absolute horror, I cannot launch, I gotta scrub, trapped in myself, fuel tanks held by the TEL... Spacex... has taken my TEA... taken my TEB... taken hydraulics, Taken my fins... taken my legs... taken my soul... left me expendablllllllllle... [epic solo] Edited December 19, 2018 by CatastrophicFailure Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted December 19, 2018 Share Posted December 19, 2018 41 minutes ago, CatastrophicFailure said: Dangit, you’ve wormed this into my head: [cue chunky speed metal riff] Darkness, imprisoning me, all that I see, absolute horror, I cannot launch, I gotta scrub, trapped in myself, fuel tanks held by the TEL... Spacex... has taken my TEA... taken my TEB... taken hydraulics, Taken my fins... taken my legs... taken my soul... left me expendablllllllllle... [epic solo] Dang it, I can only give that one like. One of my favourite songs Quote Link to comment Share on other sites More sharing options...
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