tater Posted August 4, 2021 Share Posted August 4, 2021 No, they will get tiles. Quote Link to comment Share on other sites More sharing options...
cubinator Posted August 4, 2021 Share Posted August 4, 2021 33 minutes ago, mikegarrison said: I would disagree that the Apollo Command Module was "designed to get as much lift as possible". Re-entry capsules are generally designed to be much more focused on managing heat and decel loading than on trying to maximize glide distance. remembers Gemini paraglider Quote Link to comment Share on other sites More sharing options...
Lewie Posted August 4, 2021 Share Posted August 4, 2021 Pictures from my trip to Starbase!!! I'm tiny right up next to the letters.... Friends+Starships=heck of a great time! Fr. Tony and I with SN15+16 I like this one for a scale I tol 'ya that they named it Rocket Road! And that's the best ones! I have a LOT more, but they're a pain to upload Quote Link to comment Share on other sites More sharing options...
Beccab Posted August 4, 2021 Share Posted August 4, 2021 (edited) **EDA's Elon Musk Interview - Part 1:** Booster: * The things in between the grid fins on B4 are load points for lifting (may be also used for catching). * Booster target for dry mass "should" be under 200 tons. * Grid fins not folding in looks to be final but Elon doesn't rule out a change * Grid fins weigh around 3t each - Elon suggests that they could cut the grid fin weight in half Raptor: * Raptor V2 is already in production - should be testing V2 in about a month. * Volume production of Raptor will move to McGregor, Hawthorne will be used for dev and RVac * Raptor v2 to be able to reach 230t at 298 bar. Elon wants to squeeze an extra 2bar out of it to make it 300 bar HLS: * HLS thruster system is still under debate - Musk indicates that NASA will be able to help them with that. * HLS could have the same thrust layout as the normal ship Stage Sep: * Booster and ship will go into a "spin" before engine shutdown - the aim is that the Ship and booster will seperate by themselves (much like Starlink) * RCS thrusters on the ship will help with seperation * Ullage gas (venting) on SH will be used as RCS. Hot gas thrusters have been ELIMINATED according to EDA. * Elon suggests on-the-spot that ullage gas could be used on the ship as well in order to eliminate cold gas. (May be replace cold gas or may not) Msc: * None of the failures of the previous prototypes were on the internal "risk list" Part 2 will probably be more about raptors and possibly other Starshio thrusters (cold gas, hot gas, maybe Lunar Starship prototype thrusters?) It was also confirmed that part 3 will talk at least a bit about the Florida production site Edited August 4, 2021 by Beccab Quote Link to comment Share on other sites More sharing options...
Beccab Posted August 4, 2021 Share Posted August 4, 2021 S20 heat shield nearly complete, the tip is now done and, against all odds, it's not a single piece@sevenperforce Quote Link to comment Share on other sites More sharing options...
tater Posted August 4, 2021 Share Posted August 4, 2021 Kudos to Tim Dodd, he was smart enough to ask limited questions a d just let Elon go. That’s clearly how to get the most from him, point him down a rabbit hole and enjoy the show. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted August 4, 2021 Share Posted August 4, 2021 Quote Link to comment Share on other sites More sharing options...
Beccab Posted August 4, 2021 Share Posted August 4, 2021 Just now, CatastrophicFailure said: Jesus, that was unexpected so fast. Roast closure today too, so maybe...? Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted August 4, 2021 Share Posted August 4, 2021 30 minutes ago, Beccab said: Booster and ship will go into a "spin" before engine shutdown - the aim is that the Ship and booster will seperate by themselves (much like Starlink) Wait, what?! Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted August 4, 2021 Share Posted August 4, 2021 9 minutes ago, CatastrophicFailure said: Wait, what?! When I heard that part, I was assuming the kick spin was for getting the booster pointed the right way for boostback. But now that I think about it, if aero loads are light enough, spinning slightly to release the upper stage with centrifugal "force" (yeah it's not a force but it's easier to say it that way) solves a lot of problems neatly. Performance impact should be minimal. It helps the booster get in the right direction for boostback quicker. It eliminates all the mass that a separation system would take up. And, it makes stacking way easier and turnaround faster because there is no separation system to reset, you just plop it right down on the booster. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted August 4, 2021 Share Posted August 4, 2021 31 minutes ago, Ultimate Steve said: solves a lot of problems neatly. Yeah but… that’s usually exactly what you don’t want during separation… didn’t a Falcon 1 fail for exactly that reason? And what about the performance hit from re-orienting the Starship? This ain’t Kerbal after all… I mean, I’m sure they’ve considered all this and what not but still, mind kinda blown right now… Gonna be one interesting launch, that’s for dang sure… and of course the headlines will read, “massive SpaceX rocket nearly spins out of control!” Quote Link to comment Share on other sites More sharing options...
Beccab Posted August 4, 2021 Share Posted August 4, 2021 17 minutes ago, CatastrophicFailure said: Yeah but… that’s usually exactly what you don’t want during separation… didn’t a Falcon 1 fail for exactly that reason? And what about the performance hit from re-orienting the Starship? This ain’t Kerbal after all… I mean, I’m sure they’ve considered all this and what not but still, mind kinda blown right now… Gonna be one interesting launch, that’s for dang sure… and of course the headlines will read, “massive SpaceX rocket nearly spins out of control!” it's delightfully counterintuitive! Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted August 4, 2021 Share Posted August 4, 2021 13 minutes ago, CatastrophicFailure said: Yeah but… that’s usually exactly what you don’t want during separation… didn’t a Falcon 1 fail for exactly that reason? And what about the performance hit from re-orienting the Starship? This ain’t Kerbal after all… I mean, I’m sure they’ve considered all this and what not but still, mind kinda blown right now… Gonna be one interesting launch, that’s for dang sure… and of course the headlines will read, “massive SpaceX rocket nearly spins out of control!” I think the falcon 1 fail was due to residual thrust from the first stage. Assuming raptor thrust is on a constant downward slope with no increases during shutdown, and that there is no active separation mechanism like in falcon 1, recontacting shouldn't be an issue. Performance impact shouldn't be much more than a couple seconds of burning above prograde, which they might need to do anyway depending on the flight profile to get the apo up. Unless of course they wait for one whole rotation to do ignition (I doubt it). Should be offset by a faster boostback and reduced mass, at least that is my intuition. I could still be completely wrong about this though. Ullage/prop settling for stage two ignition might be a concern with that rotation. Quote Link to comment Share on other sites More sharing options...
RCgothic Posted August 4, 2021 Share Posted August 4, 2021 That's a great interview Tim did with Elon. Loads of engineering goodness! Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted August 4, 2021 Share Posted August 4, 2021 14 minutes ago, Beccab said: it's delightfully counterintuitive! Watching that gonna be like… Quote Link to comment Share on other sites More sharing options...
RyanRising Posted August 4, 2021 Share Posted August 4, 2021 I was under the impression that on-the-spot suggestion was to use ullage gas as the propellant storage for the ship's hot gas thrusters, not to not burn it at all, but looking back at it I don't think it's clear either way. At any rate, this interview certainly is one heck of an info dump, so many questions I had are already answered! Quote Link to comment Share on other sites More sharing options...
Beccab Posted August 4, 2021 Share Posted August 4, 2021 Tile operator breaking a tile while trying to install it pictured on video look at the guy with the FH black shirt Quote Link to comment Share on other sites More sharing options...
Elthy Posted August 4, 2021 Share Posted August 4, 2021 That video gives a nice sense of the size of that thing. I allways assumed the tiles were way smaller, about the size of a hand. Quote Link to comment Share on other sites More sharing options...
Lukaszenko Posted August 4, 2021 Share Posted August 4, 2021 3 hours ago, Elthy said: That video gives a nice sense of the size of that thing. I allways assumed the tiles were way smaller, about the size of a hand. Look how light those things are. They just pick them up with a couple fingers like it's a dinner plate Quote Link to comment Share on other sites More sharing options...
Beccab Posted August 4, 2021 Share Posted August 4, 2021 4 minutes ago, Lukaszenko said: Look how light those things are. They just pick them up with a couple fingers like it's a dinner plate I heard that the shuttle tiles were very light because they had a low density, probably these are as well Also: This thing is going to be beautiful Quote Link to comment Share on other sites More sharing options...
Minmus Taster Posted August 4, 2021 Share Posted August 4, 2021 46 minutes ago, Beccab said: I heard that the shuttle tiles were very light because they had a low density, probably these are as well Also: This thing is going to be beautiful I said it once...or twice and I will say it again... Hi S20! Nice to meet you! Quote Link to comment Share on other sites More sharing options...
Brotoro Posted August 4, 2021 Share Posted August 4, 2021 That staging sequence sounds dubious to me. Quote Link to comment Share on other sites More sharing options...
tater Posted August 4, 2021 Share Posted August 4, 2021 22 minutes ago, Brotoro said: That staging sequence sounds dubious to me. The ends butt together, most stages have engines shrouded in a way that requires a more precise separation. An RCS pitch up, then release seems reasonable. The CM will be inside SS, so it will rotate about that, the release will throw the SH down/forward. Quote Link to comment Share on other sites More sharing options...
JoeSchmuckatelli Posted August 4, 2021 Share Posted August 4, 2021 4 minutes ago, tater said: The ends butt together, most stages have engines shrouded in a way that requires a more precise separation. An RCS pitch up, then release seems reasonable. The CM will be inside SS, so it will rotate about that, the release will throw the SH down/forward. Talk about wishing there was a a camera that could resolve this and let us watch from the 3d person perspective 21 hours ago, CatastrophicFailure said: How are they going to catch off to the side and then rotate around to the launch platform? I've yet to see anything on the tower that looks like it can do that Quote Link to comment Share on other sites More sharing options...
tater Posted August 4, 2021 Share Posted August 4, 2021 Quote Link to comment Share on other sites More sharing options...
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