magnemoe Posted August 30, 2020 Share Posted August 30, 2020 1 hour ago, tater said: I assume that on the production version they will have more hardware on the top. The area below the payload adapter/ floor of cargo bay can not be used for payload but its an easy accessible space at the bottom of the bay. As an bonus on an manned mission you can access it from the cargo bay during flight. Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted August 30, 2020 Share Posted August 30, 2020 (edited) NASASpaceflight stream is now estimating that the hop will occur around 1PM CDT. Lots of tank farm activity now. Edit: Vehicle now venting! Edit 2: Detanking double vent. Looking like an abort. Edited August 30, 2020 by RealKerbal3x Quote Link to comment Share on other sites More sharing options...
Guest Posted August 30, 2020 Share Posted August 30, 2020 aw man... probably was the high winds. It's like 20 out there Quote Link to comment Share on other sites More sharing options...
tater Posted August 30, 2020 Share Posted August 30, 2020 vehicles to pad. Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted August 30, 2020 Share Posted August 30, 2020 4 minutes ago, tater said: vehicles to pad. Yep. NSF stream has ended now. Quote Link to comment Share on other sites More sharing options...
tater Posted August 30, 2020 Share Posted August 30, 2020 Back to venting again... guess it's another try Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted August 30, 2020 Share Posted August 30, 2020 (edited) NSF is live again, seems they're ready for another attempt... Edit: It appears that prop loading has started. Edit 2: 10 minutes to go! The siren went off! Edited August 30, 2020 by RealKerbal3x Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted August 30, 2020 Share Posted August 30, 2020 T-10 minutes. Wind is a concern. Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted August 30, 2020 Share Posted August 30, 2020 4 minutes ago, Ultimate Steve said: T-10 minutes. Wind is a concern. Looking like a double vent now, the wind may have got the better of them. Quote Link to comment Share on other sites More sharing options...
KSK Posted August 30, 2020 Share Posted August 30, 2020 I guess this shouldn't come as a surprise but the build quality on SN6 seems to be noticeably improved from SN5, at least judging from the pictures that @tater linked. Or maybe that was just SN6 showing us her good side. Quote Link to comment Share on other sites More sharing options...
tater Posted August 30, 2020 Share Posted August 30, 2020 Always the F9 launch... Quote Link to comment Share on other sites More sharing options...
Brotoro Posted August 30, 2020 Share Posted August 30, 2020 Nice view of separation and start of boostback. Beautiful views of the landing! The cloud layer streaming through the grid fins was very nice. That's an orbit plot I've never seen. Quote Link to comment Share on other sites More sharing options...
Geonovast Posted August 30, 2020 Share Posted August 30, 2020 8 minutes ago, Brotoro said: That's an orbit plot I've never seen. Because it's the first polar launch out of Florida in like.. half a century. That was some of the most beautiful footage I've ever seen. Don't think we've ever been able to see fairing deploy from the ground before. Quote Link to comment Share on other sites More sharing options...
Brotoro Posted August 30, 2020 Share Posted August 30, 2020 The venting from the second stage is great, too. Nice lighting on this mission. Satellite deployed. Another excellent job. Still a couple rideshare says to dump off later. Quote Link to comment Share on other sites More sharing options...
Entropian Posted August 30, 2020 Share Posted August 30, 2020 That was a really smooth landing. Quote Link to comment Share on other sites More sharing options...
cubinator Posted August 31, 2020 Share Posted August 31, 2020 I missed it because I was finishing up my move-in to the apartment, but I'm definitely watching the replay after dinner! Quote Link to comment Share on other sites More sharing options...
tater Posted August 31, 2020 Share Posted August 31, 2020 Quote Link to comment Share on other sites More sharing options...
CBase Posted August 31, 2020 Share Posted August 31, 2020 Unfortunately the commentator did not go into the pretty obivous differences in ascent profile: Normally SECO and Landing burn are very close together, but this time minutes apart. Actually even at Max-Q and MECO you could see that SAOCOM-1B was on a much steeper trajectory which requires longer second engine burn. MECO this time was at T+2:25 with ~ 5940 km/h @78km altitude, last starlink for comparison MECO was at T+2:41 with ~7880 km/h @71.5 km altitude. It would be nice to know how much of this velocity difference is due to boost back to CC and which is attributed to the dog leg. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted August 31, 2020 Share Posted August 31, 2020 Quote Link to comment Share on other sites More sharing options...
RCgothic Posted August 31, 2020 Share Posted August 31, 2020 50 minutes ago, CBase said: Unfortunately the commentator did not go into the pretty obivous differences in ascent profile: Normally SECO and Landing burn are very close together, but this time minutes apart. Actually even at Max-Q and MECO you could see that SAOCOM-1B was on a much steeper trajectory which requires longer second engine burn. MECO this time was at T+2:25 with ~ 5940 km/h @78km altitude, last starlink for comparison MECO was at T+2:41 with ~7880 km/h @71.5 km altitude. It would be nice to know how much of this velocity difference is due to boost back to CC and which is attributed to the dog leg. The booster burn time (and therefore MECO velocity) isn't an entirely fair comparison with Starlink as those are ASDS landings and the booster naturally burns longer and faster on those missions because it's reserving less. A better comparison would be CRS. Good spot on the altitude though, it does look steep. Was the dogleg before or after stage sep? Quote Link to comment Share on other sites More sharing options...
RCgothic Posted August 31, 2020 Share Posted August 31, 2020 Quote Link to comment Share on other sites More sharing options...
DDE Posted August 31, 2020 Share Posted August 31, 2020 On 8/29/2020 at 8:54 PM, RCgothic said: SpaceX super-Sunday is Roscosmos's bad monday. Sorry, couldn't resist. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted August 31, 2020 Share Posted August 31, 2020 On 8/29/2020 at 2:54 PM, StrandedonEarth said: Those fin legs look aerodynamically unstable during engine-first descent, but I suppose the grid fins plus the mass of engines and thrust puck could keep the CoM/CoP relationship manageable Not to mention the extremely draggy interstage and the mass of landing propellant (which is forced down by drag acceleration). Plus hot-gas thrusters to help the grid fins do their thing. And having only four rather than six. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted August 31, 2020 Share Posted August 31, 2020 14 hours ago, Geonovast said: Because it's the first polar launch out of Florida in like.. half a century. That was some of the most beautiful footage I've ever seen. Don't think we've ever been able to see fairing deploy from the ground before. At 20:38 in the SAOCOM 1B launch, is the white dot on the S1 view the moon, or the second stage? Amazing to see the two fairing halves separating from the ground tracking cam, though. And absolutely fantastic view of the vapor shock formation during transonic phase. You can really see why grid fins are so effective. Those single-engine-all-the-way-down burns are shockingly long. Quote Link to comment Share on other sites More sharing options...
Geonovast Posted August 31, 2020 Share Posted August 31, 2020 10 minutes ago, sevenperforce said: At 20:38 in the SAOCOM 1B launch, is the white dot on the S1 view the moon, or the second stage? I think it's the second stage. We'd know for sure if it'd just stayed in frame for another 2 seconds... Also given the orientation of the stage (being a polar launch) I doubt the moon would be in view. Quote Link to comment Share on other sites More sharing options...
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