So their youtube channel says tomorrow at 5:40pm - is that the new tentative launch time?
Quote from: sanman on 05/27/2016 02:16 amSo their youtube channel says tomorrow at 5:40pm - is that the new tentative launch time?OrbitalATK is cited as saying 5:39pm
I thought the tvc was supplied pressurized kerosene from the fuel turbo pump? If so how do they test motion when the rocket isn't running?
Quote from: rsdavis9 on 05/27/2016 01:33 amI thought the tvc was supplied pressurized kerosene from the fuel turbo pump? If so how do they test motion when the rocket isn't running?That is first stage, I believe second stage has EMA's
electromagnetic actuator, I believe.
Quote from: arsenal on 05/26/2016 10:50 pmSounds similar to an issue they had back in 2015. https://twitter.com/elonmusk/status/552437001291841539Wow, nice memory. Indeed sounds very similar.
Sounds similar to an issue they had back in 2015. https://twitter.com/elonmusk/status/552437001291841539
If this actuator is in fact a device that gimbals the engine, would I be correct in assuming that the static fire countdown included a test of it as well?
Is he? SpaceX has introduced some higher-risk items, for instance, on one of their engines (but not all), they had a 3D printed oxygen valve as a flight demo. I could definitely see them refly some of the recovered hardware like even a whole engine even if the whole stage doesn't refly.
Quote from: Jim on 05/27/2016 03:02 amQuote from: rsdavis9 on 05/27/2016 01:33 amI thought the tvc was supplied pressurized kerosene from the fuel turbo pump? If so how do they test motion when the rocket isn't running?That is first stage, I believe second stage has EMA'sSecond stage also has TVCs.... both are hydromechanical. GSE provides pressure during static testing.
Folks, even hydromechanical powered actuators need electromechanical valves...there's not exactly a dude up there to turn the valves by hand 😀
The live stream countdown is at 2 hours 11 minutes at SpaceX.com. So they haven't scrubbed as of now.Edited to add: it appears the webcast will start at 5:38 Eastern if the countdown clock on the webcast is right. Either they're starting the webcast 1 min before launch or they'll postpone the launch to sometime later in the window
Quote from: Bubbinski on 05/27/2016 07:28 pmThe live stream countdown is at 2 hours 11 minutes at SpaceX.com. So they haven't scrubbed as of now.Edited to add: it appears the webcast will start at 5:38 Eastern if the countdown clock on the webcast is right. Either they're starting the webcast 1 min before launch or they'll postpone the launch to sometime later in the windowIt always looks like that, the actual webcast normally starts ~20 minutes earlier than the countdown says it will.
Hey guys, the party thread is here: http://forum.nasaspaceflight.com/index.php?topic=40089.0. Please use it.