tater Posted February 14 Share Posted February 14 (edited) The scrub last night means we have a potential triple-header. It's 2 calendar days (not for mountain and pacific time zones!), but launch #1 this afternoon @ 5:30 Eastern, then #2 @ 7:30 Eastern, then launch #3 @ 1:05 Eastern. 3 Falcon 9 launches in a 6 hour, 25 minutes span. Edited February 14 by tater Quote Link to comment Share on other sites More sharing options...
tater Posted February 14 Share Posted February 14 Quote Link to comment Share on other sites More sharing options...
darthgently Posted February 14 Share Posted February 14 Interesting read, pretty graphics Quote Link to comment Share on other sites More sharing options...
tater Posted February 14 Share Posted February 14 8 hours ago, zolotiyeruki said: My impression is that the exhaust gases from SS don't cause SH to *decelerate*, since the core engines stayed lit during separation. Rather, they reduce SH's acceleration. 5 hours ago, Terwin said: I was under the impression that stage 2 pushed hard enough on stage 1 that it experienced rearward acceleration, likely causing the contents of both tanks to slosh forward. Quote Link to comment Share on other sites More sharing options...
darthgently Posted February 14 Share Posted February 14 Keep in mind that Ryan's simulation is based on very rough approximations of accelerations gleaned from the videos we've all seen, the fluid he used for modeling purposes is water, not LOX, and fluid simulations almost always fall short, because chaos and the fuzziness of strange attractor space Quote Link to comment Share on other sites More sharing options...
tater Posted February 14 Share Posted February 14 Quote Link to comment Share on other sites More sharing options...
tater Posted February 14 Share Posted February 14 Quote Link to comment Share on other sites More sharing options...
tater Posted February 14 Share Posted February 14 Landing 272 Quote Link to comment Share on other sites More sharing options...
darthgently Posted February 15 Share Posted February 15 Just started Quote Link to comment Share on other sites More sharing options...
tater Posted February 15 Share Posted February 15 Quote Link to comment Share on other sites More sharing options...
darthgently Posted February 15 Share Posted February 15 27 minutes ago, darthgently said: Just started OMG. So much eye candy in this vid. Thoughtful analysis too Quote Link to comment Share on other sites More sharing options...
tater Posted February 15 Share Posted February 15 26 min X feed is a few seconds ahead Quote Link to comment Share on other sites More sharing options...
tater Posted February 15 Share Posted February 15 Almost MECO This is an RTLS Fairing Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted February 15 Share Posted February 15 13 hours ago, darthgently said: Just started I'm in a place where I can't listen to the audio. What's the premise of the grid fin speculation? Quote Link to comment Share on other sites More sharing options...
tater Posted February 15 Share Posted February 15 29 minutes ago, JoeSchmuckatelli said: I'm in a place where I can't listen to the audio. What's the premise of the grid fin speculation? That the grid fins can actually exert some control authority during separation due to exhaust impingement. Also: Quote Link to comment Share on other sites More sharing options...
GuessingEveryDay Posted February 15 Share Posted February 15 (edited) 47 minutes ago, JoeSchmuckatelli said: I'm in a place where I can't listen to the audio. What's the premise of the grid fin speculation? You know how the SpaceX boosters can steer themselves with gridfins, going through the air. What if we used the air from the SS during the hot staging to flip it around? Same idea as using a leaf blower and then covering it with your hand then pulling one side of your hand off. Edited February 15 by GuessingEveryDay dang, got ninja'd Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted February 15 Share Posted February 15 Apropos of nothing, I have recently gotten a 3D printer and have gotten pretty good at messing around with it. I'm going to be printing this and assembling it with my 10-year-old for his birthday. I'll post photos once it is done! Quote Link to comment Share on other sites More sharing options...
tater Posted February 15 Share Posted February 15 43 minutes ago, sevenperforce said: I'm going to be printing this and assembling it with my 10-year-old for his birthday. Quote Link to comment Share on other sites More sharing options...
tater Posted February 15 Share Posted February 15 about 30 min Quote Link to comment Share on other sites More sharing options...
tater Posted February 15 Share Posted February 15 This will be 3 launches in 23 hours if they fly. Startup. Go for launch. Sep Fairing Quote Link to comment Share on other sites More sharing options...
tater Posted February 15 Share Posted February 15 Quote Link to comment Share on other sites More sharing options...
darthgently Posted February 16 Share Posted February 16 (edited) Spoiler Hope this doesn't affect their burn accuracy significantly, but really don't know enough about it. I'd guess they hadn't the opportunity to test the optics of the star tracking in real orbital conditions until now if developed in-house. And if purchased, maybe the brochure exaggerated a smidge "...Initially, the star tracker information was numerically conditioned slightly differently than we anticipated. We were expecting a one-in-a-thousand numerical tolerance and received a number more like two and three in a thousand. So, Nova-C’s navigation system rejected the star tracker data." Edited February 16 by darthgently Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted February 17 Share Posted February 17 https://qz.com/tesla-cybertruck-rust-ev-1851260415 The rusty steel can't be a problem on Mars, because it's a carbon dioxide air. Quote Link to comment Share on other sites More sharing options...
tater Posted February 17 Share Posted February 17 Quote Link to comment Share on other sites More sharing options...
tater Posted February 17 Share Posted February 17 Falcon 9 Stage 2 in its natural habitat: Quote Link to comment Share on other sites More sharing options...
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