tater Posted July 14, 2023 Share Posted July 14, 2023 Twitter events gives multiple views to pick from Quote Link to comment Share on other sites More sharing options...
Brotoro Posted July 14, 2023 Share Posted July 14, 2023 Hold. Quote Link to comment Share on other sites More sharing options...
tater Posted July 14, 2023 Share Posted July 14, 2023 Abort. Quote Link to comment Share on other sites More sharing options...
Brotoro Posted July 14, 2023 Share Posted July 14, 2023 Looks like scrub at T-40 sec Didn't say why. Unless I missed it. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted July 14, 2023 Share Posted July 14, 2023 11 hours ago, mikegarrison said: I take issue with this characterization. The upper stage would get absolutely 0 kg of payload into orbit by itself. The only reason it can get any useful work done at all is because of all the energy that the first stage has invested into it. First stage is for attitude, second is for velocity. Because you are high up and already moving downrange you don't need much TWR who makes second stage lighter. You even have the tricks of dropping second stage with an higher than intended Ap and use the ballistic trajectory as time to accelerate it into orbit. Atlas uses this but starliner needs two engines on second stage as this toss is not safe if second stage fails as you reenter the atmosphere to steep. Quote Link to comment Share on other sites More sharing options...
tater Posted July 15, 2023 Share Posted July 15, 2023 Launch moved to tomorrow. Quote Link to comment Share on other sites More sharing options...
tater Posted July 15, 2023 Share Posted July 15, 2023 Quote Link to comment Share on other sites More sharing options...
tater Posted July 16, 2023 Share Posted July 16, 2023 Music Quote Link to comment Share on other sites More sharing options...
tater Posted July 16, 2023 Share Posted July 16, 2023 flight norminal so far Quote Link to comment Share on other sites More sharing options...
tater Posted July 16, 2023 Share Posted July 16, 2023 Quote Link to comment Share on other sites More sharing options...
RCgothic Posted July 17, 2023 Share Posted July 17, 2023 Nice! Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted July 17, 2023 Share Posted July 17, 2023 1 hour ago, RCgothic said: Nice! That might just do it. Quote Link to comment Share on other sites More sharing options...
tater Posted July 17, 2023 Share Posted July 17, 2023 Tomorrow night: Quote Link to comment Share on other sites More sharing options...
tater Posted July 19, 2023 Share Posted July 19, 2023 music abort Quote Link to comment Share on other sites More sharing options...
darthgently Posted July 19, 2023 Share Posted July 19, 2023 Apologies if posted already, a few weeks old, but I didn't stumble onto it until now. The continuous camera view is quite engaging Quote Link to comment Share on other sites More sharing options...
FleshJeb Posted July 19, 2023 Share Posted July 19, 2023 In the interests of journalistic integrity, someone please get Chris Bergin to interview a civil engineer. SpaceX's stormwater management/erosion control is embarrassingly bad. Not just from a regulatory standpoint ($$$), but they're undermining their own pad...again. Quote Link to comment Share on other sites More sharing options...
darthgently Posted July 19, 2023 Share Posted July 19, 2023 14 minutes ago, FleshJeb said: In the interests of journalistic integrity, someone please get Chris Bergin to interview a civil engineer. SpaceX's stormwater management/erosion control is embarrassingly bad. Not just from a regulatory standpoint ($$$), but they're undermining their own pad...again. The launch pad, or a different concrete pad? Those new double digits of pilings (20 or so?) concrete pilings at the launch pad go down like 10+ meters (guesstimate) and they've sunk large corrugated steel sheets (6'-8' deep?) around the pad to alleviate surface erosion. They also dewatered the ground fairly deep around the pad as they built it back up to get more solids in place near the pad. Bottom line is that they are on a barrier island / marsh. I think noticeable erosion is like wind or rain there. They will likely need to move dirt now and then to compensate in those conditions as periodic maintenance Quote Link to comment Share on other sites More sharing options...
magnemoe Posted July 19, 2023 Share Posted July 19, 2023 37 minutes ago, FleshJeb said: In the interests of journalistic integrity, someone please get Chris Bergin to interview a civil engineer. SpaceX's stormwater management/erosion control is embarrassingly bad. Not just from a regulatory standpoint ($$$), but they're undermining their own pad...again. Where? And its very limited that they can do outside their premises. Area outside the pads is owned by NASA or the Air force in Florida and its an nature preserve at Boca Chica, And they are not building skyscrapers, Quote Link to comment Share on other sites More sharing options...
FleshJeb Posted July 19, 2023 Share Posted July 19, 2023 2 hours ago, darthgently said: The launch pad, or a different concrete pad? Nothing a few truckloads of rip-rap and a silt settling basin won't fix. I'll be happy to design it if they pay me. (I'm joking--After doing work for Tesla, never again.) 2 hours ago, darthgently said: and they've sunk large corrugated steel sheets (6'-8' deep?) around the pad to alleviate surface erosion This is good. Although as someone who has seen 70ft sheet piles sunk on multiple sites, I'd argue that they're not that large. I'm just hoping that pad edge doesn't end up cantilevered over a hole. 2 hours ago, darthgently said: Bottom line is that they are on a barrier island / marsh. I think noticeable erosion is like wind or rain there. They will likely need to move dirt now and then to compensate in those conditions as periodic maintenance "An ounce of prevention is worth a pound of cure." One of SpaceX's stated goals is to have a rapid launch cycle with minimum operations and maintenance effort. Applying some industry-standard best practices would really help them here. At least install the silt fence right, guys. In my occasional stints as a construction and stormwater inspector, I may or may not have bribed crews with cases of beer to improve the quality of their erosion control installs. 2 hours ago, magnemoe said: Where? And its very limited that they can do outside their premises. See above. Just because the site is challenging does not absolve them of the requirement to responsibly manage their stormwater. There's 200+ years of water-rights law in the Western United States that has firmly set the precedents. The core premise of which is, "You don't get to screw up other people's property." It's a foundational tenet of capitalism and private property rights. 2 hours ago, magnemoe said: And they are not building skyscrapers They kinda are. Quote Link to comment Share on other sites More sharing options...
tater Posted July 20, 2023 Share Posted July 20, 2023 Stream says it starts in an hour, but liftoff is actually set for 9:09 Pacific. I think their web person just assumes the time is Eastern. Quote Link to comment Share on other sites More sharing options...
tater Posted July 20, 2023 Share Posted July 20, 2023 live Quote Link to comment Share on other sites More sharing options...
tater Posted July 20, 2023 Share Posted July 20, 2023 Another boring flight to space (and back). Quote Link to comment Share on other sites More sharing options...
Royalswissarmyknife Posted July 20, 2023 Share Posted July 20, 2023 I wonder how Nasa deals with all the water after a launch. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted July 20, 2023 Share Posted July 20, 2023 17 minutes ago, Royalswissarmyknife said: I wonder how Nasa deals with all the water after a launch. The same way SpaceX deals with all the water after a launch of Falcon 9 or Falcon Heavy. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted July 20, 2023 Share Posted July 20, 2023 24 minutes ago, sevenperforce said: The same way SpaceX deals with all the water after a launch of Falcon 9 or Falcon Heavy. At pad 39 A they have some large dams close to the pad but outside the fence, back then I was on KSC bus tour we saw an alligator in it. I assume this is for runoff water from the delude system. Not seen dams like this at starbase, its just an hole in the ground going down to the ground water level. One issue with 39 A is that you might get RP 1 leaks who has to be handled. Quote Link to comment Share on other sites More sharing options...
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