RedKraken Posted April 4, 2019 Share Posted April 4, 2019 (edited) For the faithful : Does anybody know who did the original with FH? I only rubbed out the FH to put in hopper. I know it is hard to tell its been doctored. Edited April 4, 2019 by RedKraken Quote Link to comment Share on other sites More sharing options...
KSK Posted April 4, 2019 Share Posted April 4, 2019 (edited) Thanks for the most excellent ear worm, folks. After watching those Starhopper videos I’ve got the ‘All Systems Go’ theme from Apollo 13, running round my head. Am in an open plan office so trying to keep the goofy grin (and manly damp eyes) under control. For those wanting to hear the music, recommend searching for ‘Jebediah Kerman Begins’ on YouTube and fast-forwarding to the lift-off. Edited April 4, 2019 by KSK Quote Link to comment Share on other sites More sharing options...
DDE Posted April 4, 2019 Share Posted April 4, 2019 (edited) 1 hour ago, KSK said: After watching those Starhopper videos I’ve got the ‘All Systems Go’ theme from Apollo 13, running round my head. ...dammit. I’m infected. Spoiler And now so are you. Edited April 4, 2019 by DDE Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 8 hours ago, Cunjo Carl said: Ah, different conversation. This was for the Merlin 1D vac on the Falcon Heavy Upper Stage for an idea sevenperforce put forward. I will evaluate gee-loading on the docking clamps in comparison to the planned Constellation architecture. Orion has the same docking clamps as in the planned EOR-LOR with Orion + Altair + EDS, and the Ares V EDS would have used either one or two J-2X engines with a max thrust of 1,307 kN each. They could downthrottle as low as 52% based on this article and so I will use a minimum thrust of 1,359 kN at the termination of the TLI burn for maximum gee-loading on the docking clamp in the Constellation architecture. I anticipate gee-loading for the Falcon+Dragon+Orion stack to be a little higher, since Altair massed SO much, but probably no more than a factor of 2. 8 hours ago, Cunjo Carl said: @sevenperforce You know, you might actually send the suggestion along to them. The look on the administrator's face was one of someone desperately trying to build as many fallback plans as possible, so sending it their way couldn't hurt. The worst they'll do is ignore it, and it's possible they didn't think of the elliptical orbit rendezvous, which is rather the crux of the thing. [email protected] or maybe https://www.nasa.gov/content/submit-a-question-for-nasa Hmm. I may do this. If I write a simple whitepaper and post it publicly online as an open letter to Bridenstine et al, will you guys help me spread it? Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 Hmm, based on this post the J-2X would have only had a single-point downthrottle at 84%. Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted April 4, 2019 Share Posted April 4, 2019 Falcon Heavy is vertical! Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted April 4, 2019 Share Posted April 4, 2019 Spoiler 5 minutes ago, Ultimate Steve said: Falcon Heavy is vertical! Otherwise it couldn't start. Quote Link to comment Share on other sites More sharing options...
tater Posted April 4, 2019 Share Posted April 4, 2019 Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 2 minutes ago, tater said: So weird to see it without its fairing! Used to seeing F9 not but FH. Nice to see the "tuxedo" look on the stages. Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted April 4, 2019 Share Posted April 4, 2019 29 minutes ago, tater said: Wait, why doesn't it have the fairing yet? Are they going to bring it back to the integration facility after the static fire to integrate the payload and fairing? Quote Link to comment Share on other sites More sharing options...
RCgothic Posted April 4, 2019 Share Posted April 4, 2019 Yes, payload integration happens after static fire so that if the booster explodes it doesn't take the payload with it, as happened with AMOS 6. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 Just now, RealKerbal3x said: Wait, why doesn't it have the fairing yet? Are they going to bring it back to the integration facility after the static fire to integrate the payload and fairing? Ever since AMOS-6, they never static-fire with the payload integrated. The only exceptions have been Falcon Heavy's first test flight (when they had Elon's Roadster on top as a dummy payload) and the first launch of Crew Dragon (when Dragon 2 had armed LES). Quote Link to comment Share on other sites More sharing options...
Spaceception Posted April 4, 2019 Share Posted April 4, 2019 1 hour ago, sevenperforce said: Ever since AMOS-6, they never static-fire with the payload integrated. The only exceptions have been Falcon Heavy's first test flight (when they had Elon's Roadster on top as a dummy payload) and the first launch of Crew Dragon (when Dragon 2 had armed LES). That would've been an unfortunate abort test. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted April 4, 2019 Share Posted April 4, 2019 Hmm... odd that there's no black interstage, I wonder what precipitated the change there? Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted April 4, 2019 Share Posted April 4, 2019 1 minute ago, CatastrophicFailure said: Hmm... odd that there's no black interstage, I wonder what precipitated the change there? The black interstage on a Falcon 9 B5 is for thermal protection...because the FH centre core re-enters at higher velocities than a normal F9 first stage, wouldn't it make sense to keep the black interstage? Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 29 minutes ago, RealKerbal3x said: The black interstage on a Falcon 9 B5 is for thermal protection...because the FH centre core re-enters at higher velocities than a normal F9 first stage, wouldn't it make sense to keep the black interstage? Correction: all Falcon 9 stages have black interstages; this is the natural color of the carbon composite they are made from. Before Block 5, the interstage was painted white, but this was found to be unnecessary and thus Block 5 flies without paint on the interstage. This is a brand new FH center core...either it began construction before the switch to unpainted interstages, or its higher entry interface meant that it was painted with ablative white paint. Quote Link to comment Share on other sites More sharing options...
KSK Posted April 4, 2019 Share Posted April 4, 2019 3 hours ago, tater said: "Okay, lets run through this one last time. Both rockets stuck to the side - check. Correct end pointing towards space - check...." "Abort Abort Abort! Okay - which one of you jokers managed to forget the payload? Better 'fess up or I'm gonna get Gwynne down here and she'll ask y'all again - real friendly like." Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted April 4, 2019 Share Posted April 4, 2019 Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 Finishing up this whitepaper...does anyone recall whether Dragon's prop load (D1 or D2) takes place before or after integration? Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted April 4, 2019 Share Posted April 4, 2019 If it is delayed to April 8, it will be on the third anniversary of the first droneship landing. Quote Link to comment Share on other sites More sharing options...
Barzon Posted April 4, 2019 Share Posted April 4, 2019 22 minutes ago, sevenperforce said: Finishing up this whitepaper...does anyone recall whether Dragon's prop load (D1 or D2) takes place before or after integration? What exactly do you mean? I think D2 was loaded with superdraco props on the pad? Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 Just now, Barzon Kerman said: What exactly do you mean? I think D2 was loaded with superdraco props on the pad? Are you sure? I thought Bridenstine said Pad 39A wasn't set up for hypergol loading. Can anyone with RO+RSS do a mockup and a couple of screenshots of Dragon 2, still attached to a Falcon 9 upper stage, mating with Orion and its service module in elliptic orbit? Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 1 hour ago, sevenperforce said: Are you sure? I thought Bridenstine said Pad 39A wasn't set up for hypergol loading. Can anyone with RO+RSS do a mockup and a couple of screenshots of Dragon 2, still attached to a Falcon 9 upper stage, mating with Orion and its service module in elliptic orbit? Never mind... Spoiler Quote Link to comment Share on other sites More sharing options...
Barzon Posted April 4, 2019 Share Posted April 4, 2019 use ReDirect. Its better for replicas of current/near future/ near past nasa stuff . It has Ares, Jupiter, SLS and Orion! Here Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted April 4, 2019 Share Posted April 4, 2019 17 hours ago, Cunjo Carl said: I like it! And they didn't mention having considered it yet. But would just the docking clamps be enough to keep it all steady during the TLI burn? My quick numbers show the end of the TLI burn would be at ~.9G (39% throttle, 934kN thrust, 41.2t ) . I've heard the new docking clamps are snazzy, but I don't know much about them. Just did a little mathing and the maximum gee-loading in the Constellation architecture would have been 1.08 gees at J-2X Earth Departure Stage burnout. Quote Link to comment Share on other sites More sharing options...
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