tater Posted December 4, 2019 Share Posted December 4, 2019 Just now, mikegarrison said: No, this whole conversation was started by a discussion about a thermal test involving the second stage leading to a need to use the drone ship to land the first stage instead of returning to the launch site. If they were testing something on Dragon wouldn't they have said that? Yeah, this is a second stage test, not something on Dragon. The Air Force is another customer interested in longer duration for stage 2, so this could also be about that (there's a restart at the end for disposal, but it could be a restart for circularization for a customer if it was used on a mission). New page: Quote Link to comment Share on other sites More sharing options...
magnemoe Posted December 4, 2019 Share Posted December 4, 2019 (edited) 6 minutes ago, mikegarrison said: No, this whole conversation was started by a discussion about a thermal test involving the second stage leading to a need to use the drone ship to land the first stage instead of returning to the launch site. If they were testing something on Dragon wouldn't they have said that? Understand, however how do they test it on secondary stage. Yes you can measure temperature below the heat shield during reentry but can you send the data back? If its long term duration of second stage, yes that can be done in orbit after you release payload. This can be done with either larger battery or energy saving tricks, Edited December 4, 2019 by magnemoe Quote Link to comment Share on other sites More sharing options...
mikegarrison Posted December 4, 2019 Share Posted December 4, 2019 I guess we all should have read this: https://spaceflightnow.com/2019/12/03/long-duration-coast-experiment-on-tap-after-falcon-9-launch-wednesday/ The thermal test is on the second stage, but it's not about re-entry. It's about testing the effect of a long coast phase for the second stage. 5 minutes ago, tater said: Yeah, this is a second stage test, not something on Dragon. The Air Force is another customer interested in longer duration for stage 2, so this could also be about that (there's a restart at the end for disposal, but it could be a restart for circularization for a customer if it was used on a mission). That is exactly what it is about, according to the article I just linked. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted December 4, 2019 Share Posted December 4, 2019 1 minute ago, mikegarrison said: I guess we all should have read this: https://spaceflightnow.com/2019/12/03/long-duration-coast-experiment-on-tap-after-falcon-9-launch-wednesday/ The thermal test is on the second stage, but it's not about re-entry. It's about testing the effect of a long coast phase for the second stage. That makes a lots of sense. Quote Link to comment Share on other sites More sharing options...
tater Posted December 4, 2019 Share Posted December 4, 2019 34 minutes ago, mikegarrison said: That is exactly what it is about, according to the article I just linked. Yeah, I was just basing it on what was said at the press conference. Made it seem like it was duration on orbit testing to me. Quote Link to comment Share on other sites More sharing options...
tater Posted December 4, 2019 Share Posted December 4, 2019 Quote Link to comment Share on other sites More sharing options...
Wjolcz Posted December 4, 2019 Share Posted December 4, 2019 20 minutes ago, tater said: Is that an old Dragon 2 photo from the Demo flight or is it currently standing there? Quote Link to comment Share on other sites More sharing options...
tater Posted December 4, 2019 Share Posted December 4, 2019 2 minutes ago, Wjolcz said: Is that an old Dragon 2 photo from the Demo flight or is it currently standing there? That's from the DM-1---he's asking for people who are there now to get that angle, since Starliner is on the pad right now. Also: Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted December 4, 2019 Share Posted December 4, 2019 (edited) O boi, I'm actually going to be able to watch live this time! Even if they scrub! (of course, I'm betting on the launch window remaining the same in the event of a scrub) Edited December 4, 2019 by RealKerbal3x Quote Link to comment Share on other sites More sharing options...
tater Posted December 4, 2019 Share Posted December 4, 2019 The upper level winds are supposedly better tomorrow, that's really the only weather issue. Quote Link to comment Share on other sites More sharing options...
sh1pman Posted December 4, 2019 Share Posted December 4, 2019 Bonkers stat indeed. Quote Link to comment Share on other sites More sharing options...
tater Posted December 4, 2019 Share Posted December 4, 2019 Quote Link to comment Share on other sites More sharing options...
Ultimate Steve Posted December 4, 2019 Share Posted December 4, 2019 20 minutes earlier and I would be able to watch it. Darn Spanish class... Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted December 4, 2019 Share Posted December 4, 2019 excrement. Quote Link to comment Share on other sites More sharing options...
Geonovast Posted December 4, 2019 Share Posted December 4, 2019 4 minutes ago, Ultimate Steve said: 20 minutes earlier and I would be able to watch it. Darn Spanish class... Way to jinx it. Quote Link to comment Share on other sites More sharing options...
RealKerbal3x Posted December 4, 2019 Share Posted December 4, 2019 At least I'll still be able to watch it... Quote Link to comment Share on other sites More sharing options...
tater Posted December 4, 2019 Share Posted December 4, 2019 (edited) Edited December 4, 2019 by tater Quote Link to comment Share on other sites More sharing options...
Brotoro Posted December 4, 2019 Share Posted December 4, 2019 Would they scrub a launch because of high winds at the recovery ship site? Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted December 4, 2019 Share Posted December 4, 2019 5 minutes ago, Brotoro said: Would they scrub a launch because of high winds at the recovery ship site? Boosters are expensive. Also, winds aloft too high I think. Quote Link to comment Share on other sites More sharing options...
Geonovast Posted December 4, 2019 Share Posted December 4, 2019 23 minutes ago, Brotoro said: Would they scrub a launch because of high winds at the recovery ship site? Probably depends on the contract with the customer. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted December 4, 2019 Share Posted December 4, 2019 4 minutes ago, Geonovast said: Probably depends on the contract with the customer. Yes, if mission is not time critical, they get an discount and SpaceX can scrub if landing is to hard. If critical its more expensive. ISS missions can be launched often and is not very time critical so. Quote Link to comment Share on other sites More sharing options...
mikegarrison Posted December 4, 2019 Share Posted December 4, 2019 Funny thing is, I was just wondering about this yesterday. How much does a customer have to pay to make SpaceX change from a pad landing to a ship landing? Ship landing adds more weather constraints so increases the chance of a scrub (as we see today). More ship landings have failed, so statistically there is probably a higher risk associated with a ship landing, which could mean SpaceX charges more for it. Quote Link to comment Share on other sites More sharing options...
Xd the great Posted December 5, 2019 Share Posted December 5, 2019 35 minutes ago, mikegarrison said: Funny thing is, I was just wondering about this yesterday. How much does a customer have to pay to make SpaceX change from a pad landing to a ship landing? Ship landing adds more weather constraints so increases the chance of a scrub (as we see today). More ship landings have failed, so statistically there is probably a higher risk associated with a ship landing, which could mean SpaceX charges more for it. Cost of sending out a droneship + supporting crew = 1 million Maybe 2 million? Quote Link to comment Share on other sites More sharing options...
Wjolcz Posted December 5, 2019 Share Posted December 5, 2019 4 minutes ago, Xd the great said: Cost of sending out a droneship + supporting crew = 1 million Maybe 2 million? The problem is if the booster misses it's that +whatever the booster costed +building a new one in its place. Quote Link to comment Share on other sites More sharing options...
tater Posted December 5, 2019 Share Posted December 5, 2019 49 minutes ago, mikegarrison said: Funny thing is, I was just wondering about this yesterday. How much does a customer have to pay to make SpaceX change from a pad landing to a ship landing? Ship landing adds more weather constraints so increases the chance of a scrub (as we see today). More ship landings have failed, so statistically there is probably a higher risk associated with a ship landing, which could mean SpaceX charges more for it. How many ASDS landings have failed once they worked it out? The 2 FH center cores? Any others? RTLS is mission dependent, they have to have the margin for boostback. The numbers I recall seeing are 40% payload mass to LEO reduction for RTLS, and 18% for ASDS. 12 minutes ago, Xd the great said: Cost of sending out a droneship + supporting crew = 1 million Maybe 2 million? No way it's that high. Quote Link to comment Share on other sites More sharing options...
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