Motokid600 Posted May 6, 2015 Share Posted May 6, 2015 Well id rather have it and not need it then need it and not have it, lol. Wow... I bet a car wreck would be more comfortable. Link to comment Share on other sites More sharing options...
Elthy Posted May 6, 2015 Share Posted May 6, 2015 Why doesnt Elon Musk use SI units? Now 95% of the world have to look up how much is one mph... Link to comment Share on other sites More sharing options...
Red Iron Crown Posted May 6, 2015 Share Posted May 6, 2015 Why doesnt Elon Musk use SI units? Now 95% of the world have to look up how much is one mph...The live feed gave SI units, I suspect Musk is tuning his tweet for his mostly American audience. Link to comment Share on other sites More sharing options...
Robotengineer Posted May 6, 2015 Share Posted May 6, 2015 Why doesnt Elon Musk use SI units? Now 95% of the world have to look up how much is one mph...He's an 'Merican now, so he has to use US customary units or he gets booted out of the country. Link to comment Share on other sites More sharing options...
Meithan Posted May 6, 2015 Share Posted May 6, 2015 (edited) It does look like one of the SuperDraco engines shut down early, which might be the "below nominal" performance that seems to have been called out during the test.In this short video, you can see that one of the engines in the left pod on the near side of the capsule shuts down and emits a puff of smoke at around 0:04, a couple seconds before the rest of the engines shut down:https://www.youtube.com/watch?v=cyrB7kOqfdM Edited May 6, 2015 by Meithan Link to comment Share on other sites More sharing options...
AngelLestat Posted May 6, 2015 Share Posted May 6, 2015 He's an 'Merican now, so he has to use US customary units or he gets booted out of the country.Nasa uses SI units, I dont see them getting booted I guess everyone needs to start encourage US citizen to start use SI units.. avoiding using imperial units (at least with this science related topics), is like keep pushing the inevitable.- - - Updated - - -It does look like one of the SuperDraco pods shutdown early, which might be the "below nominal" performance that seems to have been called out during the test.In this short video, you can see the one of the engines in the left pod on the near side of the capsule shutdown and emit a puff of smoke at around 0:04, a couple seconds before the rest of the engines shut down:https://www.youtube.com/watch?v=cyrB7kOqfdMYeah, it seems so.. Link to comment Share on other sites More sharing options...
StrandedonEarth Posted May 6, 2015 Share Posted May 6, 2015 You know that if that was a KSP test Jeb would have snuck aboard and yelled "Yeeeeeeehaaaaawwww" during the burn. The spirit of Jeb probably cooked that SuperDraco Link to comment Share on other sites More sharing options...
Scotius Posted May 6, 2015 Share Posted May 6, 2015 If it was engine failure, it does at least confirm that even three Super Dracos can push the capsule to safety efficiently enough. Link to comment Share on other sites More sharing options...
Frybert Posted May 6, 2015 Share Posted May 6, 2015 If it was engine failure, it does at least confirm that even three Super Dracos can push the capsule to safety efficiently enough.There are eight engines arranged in four clusters of two. As long as at least one engine in each cluster fires, enough thrust will be produced for the desired effect. So technically it was 7 Dracos, and they only need four to work. Link to comment Share on other sites More sharing options...
Albert VDS Posted May 6, 2015 Share Posted May 6, 2015 From SpaceX.com:During today's test, Crew Dragon carried a test dummy equipped with sensors in order to gather all the data necessary to help ensure a safe environment for future crew. Had humans been on board today, they would have been in great shape. Link to comment Share on other sites More sharing options...
xenomorph555 Posted May 6, 2015 Share Posted May 6, 2015 I just watched the abort test.First of all good going!Second of all DAMN, that fall looked really harsh, the Dragon 2 looks really unstable falling. I have doubts the crew would be in "great shape" after that. Link to comment Share on other sites More sharing options...
Kryten Posted May 6, 2015 Share Posted May 6, 2015 Given the context, I think 'in great shape'='not dead'. Link to comment Share on other sites More sharing options...
Albert VDS Posted May 6, 2015 Share Posted May 6, 2015 "Normally" it would be higher up and have more time to settle before deploying the parachute. Link to comment Share on other sites More sharing options...
RocketPilot573 Posted May 6, 2015 Share Posted May 6, 2015 The rocking when the chutes open looks worrying, but still an OK first flight! Link to comment Share on other sites More sharing options...
xenomorph555 Posted May 6, 2015 Share Posted May 6, 2015 Given the context, I think 'in great shape'='not dead'.Hopefully just broken ribs and teeth . Link to comment Share on other sites More sharing options...
Wesreidau Posted May 6, 2015 Share Posted May 6, 2015 Given the context, I think 'in great shape'='not dead'."In the approximate shape of a human." Link to comment Share on other sites More sharing options...
Albert VDS Posted May 6, 2015 Share Posted May 6, 2015 On the Soyuz T-10a, the only time a LES was used, the crew were badly bruised.It has about the same acceleration as the Dragon 2, so I guess great shape means "Alive and badly bruised". Link to comment Share on other sites More sharing options...
xenomorph555 Posted May 6, 2015 Share Posted May 6, 2015 On the Soyuz T-10a, the only time a LES was used, the crew were badly bruised.It has about the same acceleration as the Dragon 2, so I guess great shape means "Alive and badly bruised".Similar acceleration but a different position (on the sides instead of infront), not sure if it would be better or worse. Link to comment Share on other sites More sharing options...
sgt_flyer Posted May 6, 2015 Share Posted May 6, 2015 Still, you think they'll want to avoid - as much as it's possible - any risk of breaking bones - fat embolism from broken bones can be deadly - especially if the crew was ejected at long distance in sea and will require some time to be rescued. Link to comment Share on other sites More sharing options...
Airlock Posted May 6, 2015 Share Posted May 6, 2015 Link to comment Share on other sites More sharing options...
Meithan Posted May 6, 2015 Share Posted May 6, 2015 On the Soyuz T-10a, the only time a LES was used, the crew were badly bruised.It has about the same acceleration as the Dragon 2, so I guess great shape means "Alive and badly bruised".Far from it. The Soyuz LES produces much larger accelerations, as did the Apollo LES. Specifically, in the T-10a Soyuz incident, the LES produced "an acceleration of 14 to 17g (137 to 167 m/s²) for five seconds". Crew Dragon is limited to 5-6 g's. Link to comment Share on other sites More sharing options...
Albert VDS Posted May 6, 2015 Share Posted May 6, 2015 Far from it. The Soyuz LES produces much larger accelerations, as did the Apollo LES. Specifically, in the T-10a Soyuz incident, the LES produced "an acceleration of 14 to 17g (137 to 167 m/s²) for five seconds". Crew Dragon is limited to 5-6 g's.I did not know that. Let's change it to mildly bruised then. Alive and mildly bruised. Link to comment Share on other sites More sharing options...
Hcube Posted May 7, 2015 Share Posted May 7, 2015 I did not know that. Let's change it to mildly bruised then. Alive and mildly bruised.do you think that they would have cut the mic for swearing, just like in Soyuz T-10a ? Link to comment Share on other sites More sharing options...
Meithan Posted May 7, 2015 Share Posted May 7, 2015 do you think that they would have cut the mic for swearing, just like in Soyuz T-10a ? I think 4-5 Gs is something astronauts can handle. 14 to 17, on the other hand, and a little swearing is more than reasonable. When they landed, the first thing the rescue crew did was give them vodka and cigarettes. That's soviet Russia. Link to comment Share on other sites More sharing options...
FishInferno Posted May 7, 2015 Share Posted May 7, 2015 I think 4-5 Gs is something astronauts can handle. 14 to 17, on the other hand, and a little swearing is more than reasonable. When they landed, the first thing the rescue crew did was give them vodka and cigarettes. That's soviet Russia.I think that the fact that you narrowly escaped an exploding rocket would be enough reason to swear, regardless of the g-forces Link to comment Share on other sites More sharing options...
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