sh1pman Posted December 22, 2017 Share Posted December 22, 2017 So, emblem. We can see that there are no landing legs, but grid fins are present. They aren't deployed though, and it seems that all of the engines are burning, which is unusual for separated S1. Interstage is wrong color as well, but it's a minor thing. Quote Link to comment Share on other sites More sharing options...
tater Posted December 22, 2017 Share Posted December 22, 2017 Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted December 22, 2017 Share Posted December 22, 2017 7 minutes ago, tater said: Water landing means entry burn. Quote Link to comment Share on other sites More sharing options...
tater Posted December 22, 2017 Share Posted December 22, 2017 (edited) Obviously testing new interstage. Maybe doing cross range to test carbon fiber heating? Seems like recovering it intact might give them more data, however. Is the carbon fiber heavier? Edited December 22, 2017 by tater Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted December 22, 2017 Share Posted December 22, 2017 10 minutes ago, tater said: Obviously testing new interstage. Maybe doing cross range to test carbon fiber heating? I'm not so sure. It may be that the interstage here is just really sooty from the last landing and so it looks grey but it's actually still the original Block 3 one. Quote Link to comment Share on other sites More sharing options...
tater Posted December 22, 2017 Share Posted December 22, 2017 6 minutes ago, sevenperforce said: I'm not so sure. It may be that the interstage here is just really sooty from the last landing and so it looks grey but it's actually still the original Block 3 one. Then why cover it with a tarp? Not just a tarp, maybe a false canvas painted like a normal interstage Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted December 22, 2017 Share Posted December 22, 2017 Hmm. Would a composite interstate survive a soft water landing and inevitable tip over, even if the rest of the stage doesn’t? Perhaps they plan to recover just that one bit? Quote Link to comment Share on other sites More sharing options...
tater Posted December 22, 2017 Share Posted December 22, 2017 1 minute ago, CatastrophicFailure said: Hmm. Would a composite interstate survive a soft water landing and inevitable tip over, even if the rest of the stage doesn’t? Perhaps they plan to recover just that one bit? Yeah, it seems possible that they might be able to recover it. I'd expect that they'd get better data if it was 100% intact, landed, however, vs smashed into the ocean (possible with am explosion into the bargain). It's quite odd, really. I can see the point in testing composites (BFR), I can see the point in testing cross range, and variant heating regimes that go with that, but the secrecy is odd. Why tarp it, then show it black? Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted December 22, 2017 Share Posted December 22, 2017 5 minutes ago, CatastrophicFailure said: Hmm. Would a composite interstate survive a soft water landing and inevitable tip over, even if the rest of the stage doesn’t? Perhaps they plan to recover just that one bit? If they wanted to just play around, they could bring the F9 down with a high lateral velocity, then do the "landing" burn effectively sideways, so it would already be almost all the way laid over at v=0. 4 minutes ago, tater said: Yeah, it seems possible that they might be able to recover it. I'd expect that they'd get better data if it was 100% intact, landed, however, vs smashed into the ocean (possible with am explosion into the bargain). It's quite odd, really. I can see the point in testing composites (BFR), I can see the point in testing cross range, and variant heating regimes that go with that, but the secrecy is odd. Why tarp it, then show it black? I don't know that it's actually tarped. Quote Link to comment Share on other sites More sharing options...
Dilir Posted December 22, 2017 Share Posted December 22, 2017 (edited) Maybe i'm saying something stupid but what if they keep burning up after S2 sep with just the booster, to go really high and acquire data that would help them toward the goal of S2 reentry ? Edit : at least, it's coherent with the emblem. Edited December 22, 2017 by Dilir Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted December 22, 2017 Share Posted December 22, 2017 3 minutes ago, Dilir said: Maybe i'm saying something stupid but what if they keep burning up after S2 sep with just the booster, to go really high and acquire data that would help them toward the goal of S2 reentry ? You mean, reserve some extra propellant and then use it to boost the booster up to higher velocities? Not sure what that would provide. Quote Link to comment Share on other sites More sharing options...
Dilir Posted December 22, 2017 Share Posted December 22, 2017 Return with higher velocities / from higher altitudes than they usually do because of the fuel needed to land and the weight of the legs ? Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted December 22, 2017 Share Posted December 22, 2017 2 minutes ago, Dilir said: Return with higher velocities / from higher altitudes than they usually do because of the fuel needed to land and the weight of the legs ? They have that data from expendable entries. Quote Link to comment Share on other sites More sharing options...
tater Posted December 22, 2017 Share Posted December 22, 2017 Someone proposed on NSF that the fairing might be jettisoned, perhaps to get data on side booster flight characteristics. Could a side booster nose cone fit under the M1D vac engine bell? Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted December 22, 2017 Share Posted December 22, 2017 5 minutes ago, tater said: Someone proposed on NSF that the fairing might be jettisoned, perhaps to get data on side booster flight characteristics. Could a side booster nose cone fit under the M1D vac engine bell? No. The pusher bar in the interstage goes up inside the bell of the S2 engine and pushes against the throat. Quote Link to comment Share on other sites More sharing options...
tater Posted December 22, 2017 Share Posted December 22, 2017 Maybe this was the fairing issue... not the payload fairing, but the interstage fairing. They want this tested before FH. Again, this assumes a nosecone is hiding under that interstage. The center point is where the pusher rod is... seems like they could make an abbreviated cone. 1 minute ago, sevenperforce said: No. The pusher bar in the interstage goes up inside the bell of the S2 engine and pushes against the throat. Yeah, a cone with a bar poking vertically. Would still have closer aerodynamics than the tall interstage. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted December 22, 2017 Share Posted December 22, 2017 (edited) 18 minutes ago, tater said: Yeah, a cone with a bar poking vertically. Would still have closer aerodynamics than the tall interstage. Maybe the nosecone itself isn't necessary for the data, maybe just the effective "shortening" of the booster is enough to learn what they need to. But if this is the case, it's adding in an unusual (and untested) separation event. From what I know of the F9 design (little), separating the interstage after booster separation is a non-trivial thing... Edited December 22, 2017 by CatastrophicFailure Quote Link to comment Share on other sites More sharing options...
tater Posted December 22, 2017 Share Posted December 22, 2017 True, any new wrinkle that is a failure mode for a customer is troublesome. It would have to be normal stage sep, then discard fairing. Guess we will see soon enough tonight. Did mr Steven ever leave port? Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted December 22, 2017 Share Posted December 22, 2017 Too many parts. This causes the wheel glitch: the inner wheels are shifted up. The game engine is overloaded. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted December 22, 2017 Share Posted December 22, 2017 41 minutes ago, tater said: True, any new wrinkle that is a failure mode for a customer is troublesome. It would have to be normal stage sep, then discard fairing. Guess we will see soon enough tonight. Did mr Steven ever leave port? Mr. Steven left port late last night and is heading south at full speed. Quote Link to comment Share on other sites More sharing options...
tater Posted December 22, 2017 Share Posted December 22, 2017 So fairing recovery is on. Nice. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted December 22, 2017 Share Posted December 22, 2017 3 minutes ago, tater said: So fairing recovery is on. Nice. Going to be epic when we get to later FH missions and we have simultaneous footage of the ground cam, each of the side boosters headed back toward the launch site, the core booster plummeting toward the ASDS, the ASDS deck feed, the second stage powering up to orbit, cams from both fairings, AND fairing catch cams. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted December 22, 2017 Share Posted December 22, 2017 9 minutes ago, sevenperforce said: Going to be epic when we get to later FH missions and we have simultaneous footage of the ground cam, each of the side boosters headed back toward the launch site, the core booster plummeting toward the ASDS, the ASDS deck feed, the second stage powering up to orbit, cams from both fairings, AND fairing catch cams. “you’re gonna need a bigger boat screen.” they’ve already got the boat, so... Quote Link to comment Share on other sites More sharing options...
Nightfury Posted December 22, 2017 Share Posted December 22, 2017 (edited) 3 minutes ago, CatastrophicFailure said: “you’re gonna need a bigger boat screen.” they’ve already got the boat, so... -builds up 8 screens- -notice not having enought slots on gc- Edited December 22, 2017 by Nightfury Quote Link to comment Share on other sites More sharing options...
Spaceception Posted December 22, 2017 Share Posted December 22, 2017 (edited) Sorry if this was posted earlier, but gUYS From a day ago. Edited December 22, 2017 by Spaceception Quote Link to comment Share on other sites More sharing options...
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