Ultimate Steve Posted February 6, 2019 Share Posted February 6, 2019 25 minutes ago, Scotius said: If there will be no delays HAHAHAHAHAHAHA 25 minutes ago, Scotius said: almost everyone will be able to watch it Academic Decathlon, nooope Although, we are inside a month now, I think that may be a first, so I think it will happen in 2 months-ish. It would be cool if it happened on my birthday, March 29, but not cool if it gets delayed that far. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted February 6, 2019 Share Posted February 6, 2019 52 minutes ago, tater said: DM-1. Also: Avionics!! Quote Link to comment Share on other sites More sharing options...
Nightside Posted February 6, 2019 Share Posted February 6, 2019 40 minutes ago, sevenperforce said: Avionics!! I think I see a Barometer and a Gravioli Detector on there too! Quote Link to comment Share on other sites More sharing options...
tater Posted February 6, 2019 Share Posted February 6, 2019 1 hour ago, sevenperforce said: Avionics!! Right? Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted February 7, 2019 Share Posted February 7, 2019 2 hours ago, tater said: So... they’ve test fit the arm, but I wonder if anyone’s deployed the skirt, opened the hatch, and actually gotten in the darn thing yet... 2 hours ago, tater said: Also: All of that sensitive plumbing being slapped on, uncovered, out in a field. This will never cease to amaze me. My also: News to me, I thought they were planning less fewer launches this year. Gonna have to be one L uva game of catch up, seeing as how they’ll only be three in at the third month of the year... Quote Link to comment Share on other sites More sharing options...
tater Posted February 7, 2019 Share Posted February 7, 2019 28 minutes ago, CatastrophicFailure said: News to me, I thought they were planning less fewer launches this year. Gonna have to be one L uva game of catch up, seeing as how they’ll only be three in at the third month of the year... I checked spaceflightnow, and there are 12 launches penciled in for this year so far. That means they need 10 more, and in as many months. I presume they might add a couple Starlink launches later in the year, maybe they mean to add something like 10 of them. Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted February 7, 2019 Share Posted February 7, 2019 4 minutes ago, tater said: I checked spaceflightnow, and there are 12 launches penciled in for this year so far. That means they need 10 more, and in as many months. I presume they might add a couple Starlink launches later in the year, maybe they mean to add something like 10 of them. I would really like to see that... Quote Link to comment Share on other sites More sharing options...
StrandedonEarth Posted February 7, 2019 Share Posted February 7, 2019 It all depends on how fast they can crank out S2's, and just how quickly they can turn around the F9B5's. Then it's just a matter of having payloads, if they can crank out enough StarLinks and their dispensers. Unless he wants to launch some more Roadsters... Quote Link to comment Share on other sites More sharing options...
tater Posted February 7, 2019 Share Posted February 7, 2019 And maybe one launch is a Starship. Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 7, 2019 Share Posted February 7, 2019 1 hour ago, tater said: And maybe one launch is a Starship. Probably by December. Quote Link to comment Share on other sites More sharing options...
tater Posted February 7, 2019 Share Posted February 7, 2019 I think an orbital flight (which it would have to be to count) is extremely unlikely. I think maybe they'd count a suborbital flight of just Starship, though (Blue certainly counts those ). Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 7, 2019 Share Posted February 7, 2019 43 minutes ago, tater said: I think an orbital flight (which it would have to be to count) is extremely unlikely. I think maybe they'd count a suborbital flight of just Starship, though (Blue certainly counts those ). Elon says the first prototype will be ready by June. So I am hoping for December. Quote Link to comment Share on other sites More sharing options...
tater Posted February 7, 2019 Share Posted February 7, 2019 24 minutes ago, Xd the great said: Elon says the first prototype will be ready by June. So I am hoping for December. That's Starship, not the booster. The question is can it do SSTO, and would they progress that far in just a few months. Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 7, 2019 Share Posted February 7, 2019 7 minutes ago, tater said: That's Starship, not the booster. The question is can it do SSTO, and would they progress that far in just a few months. Quick cheap and dirty. The big factor is how quickly can they chunk out Raptor engines? Quote Link to comment Share on other sites More sharing options...
sh1pman Posted February 7, 2019 Share Posted February 7, 2019 (edited) Another test? Edited February 7, 2019 by sh1pman Quote Link to comment Share on other sites More sharing options...
RedKraken Posted February 7, 2019 Share Posted February 7, 2019 Quote Engine reached 172 mT & 257 bar chamber pressure with warm propellant, which means 10% to 20% more with deep cryo That really is good news. Quote Link to comment Share on other sites More sharing options...
MaverickSawyer Posted February 7, 2019 Share Posted February 7, 2019 Okay... for how long, though? Just a few seconds, or for a mission-representative burn? Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 7, 2019 Share Posted February 7, 2019 42 minutes ago, MaverickSawyer said: Okay... for how long, though? Just a few seconds, or for a mission-representative burn? Probably under 1 min. And how warm is warm propellant? Quote Link to comment Share on other sites More sharing options...
Reactordrone Posted February 7, 2019 Share Posted February 7, 2019 1 hour ago, Xd the great said: Probably under 1 min. And how warm is warm propellant? Still cold enough to be liquid. Quote Link to comment Share on other sites More sharing options...
KSK Posted February 7, 2019 Share Posted February 7, 2019 3 hours ago, Xd the great said: Probably under 1 min. And how warm is warm propellant? Depends whether you take the measurement behind or in front of the injector. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted February 7, 2019 Share Posted February 7, 2019 5 hours ago, sh1pman said: Another test? Holy crap. Guys guys guys. 257 bar. 257 bar. The RD-181 pulls 262.6 bar. The RD-171M pulls 250 bar. The RS-25 pulls 206.4 bar. This particular Raptor has achieved the second-highest chamber pressure of ANY rocket engine EVER. It is 2.2% away from being the highest-chamber-pressure engine of all time. Ahem. If the Starhopper design requires 170 metric tonnes (not tons, Elon!) and they have three engines, then the expected GLOW of Starhopper is 510 tonnes. On Jan 23, I predicted a propellant mass upper bound (based on pixel tracing) of 531 tonnes, so the assumptions were generous. Suppose Starhopper dries at 75 tonnes (which is ridiculously conservative). That gives 435 tonnes of props. Let's put Isp at 310 seconds to be more conservative. A realistic estimate of dV is 5.8 km/s. Hot damn. 4 hours ago, MaverickSawyer said: Okay... for how long, though? Just a few seconds, or for a mission-representative burn? Longer than a few seconds, shorter than a mission-representative burn. 3 hours ago, Xd the great said: And how warm is warm propellant? It gets very warm after a few moments. Quote Link to comment Share on other sites More sharing options...
Xd the great Posted February 7, 2019 Share Posted February 7, 2019 8 minutes ago, sevenperforce said: It gets very warm after a few moments. HOT HOT HOT HOT HOT!!! Quote Link to comment Share on other sites More sharing options...
tater Posted February 7, 2019 Share Posted February 7, 2019 The film cooling of the nozzle is visible (assuming that is the outside layer of exhaust we are seeing). Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted February 7, 2019 Share Posted February 7, 2019 1 hour ago, tater said: The film cooling of the nozzle is visible (assuming that is the outside layer of exhaust we are seeing). Does Raptor use film cooling, regenerative cooling, or both? If not film cooling, that could be outlet flow separation due to the pressure differential. I suspect this nozzle is lip-optimized a la SSME. Quote Link to comment Share on other sites More sharing options...
Spaceception Posted February 7, 2019 Share Posted February 7, 2019 2 hours ago, Xd the great said: HOT HOT HOT HOT HOT!!! HOT CHOCOLATE. Wait. That picture looks really nice. It for some reason reminded me of an aurora surrounding the engine. I hope we get another video. Quote Link to comment Share on other sites More sharing options...
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