XB-70A Posted May 11, 2018 Share Posted May 11, 2018 Here are some of the pictures taken today Spoiler Then, passing the sound barrier! 2 hours ago, Nightfury said: Would love watch this Now I guess I should work harder to get the so called camera If you are interested, here is the link to the video taken today (heat waves are ruining it a bit at the beginning): Quote Link to comment Share on other sites More sharing options...
Technical Ben Posted May 11, 2018 Share Posted May 11, 2018 1 hour ago, CatastrophicFailure said: Spoiler and such a thing would no doubt have had live pilots in the very nose, seeing that rush up at them... Out of likes of course, so, snarky commentary. Contributing something actually useful. Oh, it's terrifying in a good way... and Elon would do it if not for the sea in the way! Quote Link to comment Share on other sites More sharing options...
NSEP Posted May 12, 2018 Share Posted May 12, 2018 2 hours ago, CatastrophicFailure said: Aaaaaand I missed the whole thing. Now to weed back thru a hundred new posts... And what are they using to mount the first stage camera with now, silly putty?? It gives it more of a cinematic effect Anyone noticed how the camera views were more bright and vibrant in color? And how the second stage had a wider angle view? Quote Link to comment Share on other sites More sharing options...
CatastrophicFailure Posted May 12, 2018 Share Posted May 12, 2018 30 minutes ago, NSEP said: It gives it more of a cinematic effect Anyone noticed how the camera views were more bright and vibrant in color? And how the second stage had a wider angle view? Maybe they figured if that have to go thru all that NOAA license rigamarole they might as well make it worthwhile... Quote Link to comment Share on other sites More sharing options...
sh1pman Posted May 12, 2018 Share Posted May 12, 2018 32 minutes ago, NSEP said: Anyone noticed how the camera views were more bright and vibrant in color? And how the second stage had a wider angle view? Nope, absolutely nothing changed, you must be seeing things. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted May 12, 2018 Share Posted May 12, 2018 1 hour ago, sh1pman said: Nope, absolutely nothing changed, you must be seeing things. Uh, that's vastly different. Unless this was sarcasm. Quote Link to comment Share on other sites More sharing options...
kerbiloid Posted May 12, 2018 Share Posted May 12, 2018 Spoiler More letters - hotter nozzle? Quote Link to comment Share on other sites More sharing options...
tater Posted May 12, 2018 Share Posted May 12, 2018 Thought the images looked blown, frankly. More f-stop needed. Quote Link to comment Share on other sites More sharing options...
YNM Posted May 12, 2018 Share Posted May 12, 2018 How can I be so oblivious of a SpX launch, only to realize it one day after XD Any technical webcast ? (hate commentaries.) Quote Link to comment Share on other sites More sharing options...
KSK Posted May 12, 2018 Share Posted May 12, 2018 1 hour ago, tater said: Thought the images looked blown, frankly. More f-stop needed. f/9 ? Quote Link to comment Share on other sites More sharing options...
Technical Ben Posted May 12, 2018 Share Posted May 12, 2018 So, Elon has the Romans to blame for the rocket! http://www.astrodigital.org/space/stshorse.html From Rome to Mars? Quote Link to comment Share on other sites More sharing options...
YNM Posted May 12, 2018 Share Posted May 12, 2018 (edited) 3 hours ago, YNM said: Any technical webcast ? (hate commentaries.) Probably self answer, but I'm trying the Countdown Net along with the hosted webcast. Still has all the commentaries but at least I'm getting a louder technical comms as well. Also, very odd now that the more exciting part of a rocket launch isn't the successful launch but the successful return ! 1 hour ago, Technical Ben said: So, Elon has the Romans to blame for the rocket! http://www.astrodigital.org/space/stshorse.html Actually, that is a bit of misnomer - what limits the size of cargo carried by railways aren't the track gauge, but the loading gauge. So a UK shuttle SRBs is probably smaller than a US shuttle SRBs, despite using the same track gauge. Edited May 12, 2018 by YNM Quote Link to comment Share on other sites More sharing options...
monophonic Posted May 12, 2018 Share Posted May 12, 2018 12 hours ago, sevenperforce said: Just you. It is always more efficient to burn to a higher apogee and let the payload correct inclination than it would be to try and perform an inclination change at perigee. The payload is performing a bi-elliptic transfer; it will correct inclination, then raise perigee, then circle around and lower apogee to circularize. Importantly: that's one down, four to go before Falcon 9 is man-rated. It is always more efficient to use excess capacity in stage two for something than let it burn for nothing in the re-entry. Any bit of payload fuel saved in the plane change and circularization is more fuel available for station keeping. That directly means longer mission life-time - barring any unplanned catastrophic failures of course. So yes, it most likely did some plane changing at the same time as that is only good customer service. Of course it still is up to the payload to finish the job, but it is a slightly easier job. Quote Link to comment Share on other sites More sharing options...
magnemoe Posted May 12, 2018 Share Posted May 12, 2018 1 hour ago, Technical Ben said: So, Elon has the Romans to blame for the rocket! http://www.astrodigital.org/space/stshorse.html From Rome to Mars? Fun story but not true, for one it has been many standards for railroad gauge even in the US. Second the Romans did not use war chariots, they had become obsolete with riding horses. They was however a bit used for fast transport. Last horse drawn wagons tend to be a bit wider than the railway track. Quote Link to comment Share on other sites More sharing options...
Technical Ben Posted May 12, 2018 Share Posted May 12, 2018 It is at least iteration on each idea though! Quote Link to comment Share on other sites More sharing options...
magnemoe Posted May 12, 2018 Share Posted May 12, 2018 3 hours ago, YNM said: Actually, that is a bit of misnomer - what limits the size of cargo carried by railways aren't the track gauge, but the loading gauge. So a UK shuttle SRBs is probably smaller than a US shuttle SRBs, despite using the same track gauge. This, note that the width of all modern main battle tanks is around 3.5 meter or standard loading gauge. Exception is Israel who don't have railroads and is small. Falcon 9 is transported by road but roads is probably standardized so you can transport 3.5 meter cargo fairly easy. If you go up to 4 meters this will be harder and more expensive. Quote Link to comment Share on other sites More sharing options...
sevenperforce Posted May 12, 2018 Share Posted May 12, 2018 3 hours ago, monophonic said: It is always more efficient to use excess capacity in stage two for something than let it burn for nothing in the re-entry. Any bit of payload fuel saved in the plane change and circularization is more fuel available for station keeping. That directly means longer mission life-time - barring any unplanned catastrophic failures of course. So yes, it most likely did some plane changing at the same time as that is only good customer service. Of course it still is up to the payload to finish the job, but it is a slightly easier job. I don't dispute that. But plane changes at perigee are not efficient. Geostationary comsats typically perform a bi-elliptic transfer; the launch vehicle sends them to a supersynchronous transfer orbit (with an apogee higher than their intended destination), then the payload raises its perigee, then lowers its apogee to circularize half an orbit later. This is more efficient than a Hohmann transfer, particularly when you have a plane change to do. So excess propellant capacity on the launch vehicle is always used to raise apogee rather than any sort of perigee plane change maneuver. Quote Link to comment Share on other sites More sharing options...
YNM Posted May 12, 2018 Share Posted May 12, 2018 2 hours ago, magnemoe said: but roads is probably standardized Nah, this is a lot more true. Most street standards have a limit of 2.5 m at it's narrowest, high-speed roads goes from 3.5 m or more. It probably have to do more directly with horse carriages as well ! (or not at all, but who knows :V) Quote Link to comment Share on other sites More sharing options...
tater Posted May 12, 2018 Share Posted May 12, 2018 The diameter limit for road travel is overpasses/underpasses. Vertical clearance is set at 4.9m, and the truck transporting the cores has height that adds to the 3.7m diameter. Quote Link to comment Share on other sites More sharing options...
Barzon Posted May 12, 2018 Share Posted May 12, 2018 Spoiler Sorry, you cannot add any more reactions today. Grrr! Quote Link to comment Share on other sites More sharing options...
tater Posted May 12, 2018 Share Posted May 12, 2018 Crew Access Arm. Quote Link to comment Share on other sites More sharing options...
Barzon Posted May 12, 2018 Share Posted May 12, 2018 Ohh! Quote Link to comment Share on other sites More sharing options...
NSEP Posted May 12, 2018 Share Posted May 12, 2018 41 minutes ago, tater said: Crew Access Arm. Why is the crew acces arm inside a half-cylinder hangar like structure that isn't even covered? Does Dragon 2 still have leather seats? Quote Link to comment Share on other sites More sharing options...
tater Posted May 12, 2018 Share Posted May 12, 2018 Maybe they had it under cover, and just removed the cover? Quote Link to comment Share on other sites More sharing options...
Wjolcz Posted May 12, 2018 Share Posted May 12, 2018 (edited) Isn't that the BFR tent? Maybe it's just easier to remove the cover than install lights. Edited May 13, 2018 by Wjolcz Quote Link to comment Share on other sites More sharing options...
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