Elon's presentation (on Sept 27th) is scheduled for 1:30 pm local time, 2:30pm Eastern time.
SpaceX propulsion just achieved first firing of the Raptor interplanetary transport engine
Production Raptor goal is specific impulse of 382 seconds and thrust of 3 MN (~310 metric tons) at 300 bar
Quote from: Jonathan A. Goff @rocketrepreneur@elonmusk Is that vacuum Isp for an upper-stage version? Because 380s vacuum Isp doesn't seem realistic for a booster version.Quote from: Elon Musk @elonmusk@rocketrepreneur 382s is with a 150 area ratio vacuum (or Mars ambient pressure) nozzle. Will go over specs for both versions on Tues.Quote from: @williamwinters@elonmusk @rocketrepreneur based on your other specs, is that like a ~14 foot diameter nozzle?Quote from: Elon Musk @elonmusk@williamwinters @rocketrepreneur pretty close
@elonmusk Is that vacuum Isp for an upper-stage version? Because 380s vacuum Isp doesn't seem realistic for a booster version.
@rocketrepreneur 382s is with a 150 area ratio vacuum (or Mars ambient pressure) nozzle. Will go over specs for both versions on Tues.
@elonmusk @rocketrepreneur based on your other specs, is that like a ~14 foot diameter nozzle?
@williamwinters @rocketrepreneur pretty close
Quote from: David Ki Sun Yoon @DavidKYoon@elonmusk Sweet Jesus, that means you are pumping to 45-50 MPa... Surely this will be using multiple stage pumps?Quote from: Elon Musk @elonmusk@DavidKYoon yes
@elonmusk Sweet Jesus, that means you are pumping to 45-50 MPa... Surely this will be using multiple stage pumps?
@DavidKYoon yes
Chamber pressure is almost 3X Merlin, so engine is about the same size for a given area ratio
Here are a few important things that I think are worthy of inclusion in the first post of update thread:Elon's presentation (on Sept 27th) is scheduled for 1:30 pm local time, 2:30pm Eastern time.Livestream link for the entire IAC conference ("Starts Monday at 10am"):http://livestream.com/accounts/4426843/events/6315496/player?width=640&height=360&enableInfoAndActivity=true&autoPlay=true&mute=falseSpaceX's own Youtube live link for the speech:
Quote from: ChrisC on 09/24/2016 03:04 amHere are a few important things that I think are worthy of inclusion in the first post of update thread:Elon's presentation (on Sept 27th) is scheduled for 1:30 pm local time, 2:30pm Eastern time.so it's 18:30 GMT?(on a more general thought: although this site is us-centered, there are many users from other parts of the world, and everyone is fluent at referencing to GMT / UT, it would be helpful for us.)
Here are a few important things that I think are worthy of inclusion in the first post of update thread:Elon's presentation (on Sept 27th) is scheduled for 1:30 pm local time, 2:30pm Eastern time.
19:30 local time in the UK
Chris B, as Elon is talking later it'd be 'fun' if you post which of the live updates previously made you fall off your chair?!
Quote from: Blizzzard on 09/27/2016 12:43 pmChris B, as Elon is talking later it'd be 'fun' if you post which of the live updates previously made you fall off your chair?! I am hoping that we'll recognise this moment as it will be the one (or more) where we ALL fall off our chair/sofa/recliner/stool/perch.
Okay, thank you for clarification.Honestly, summer-time should be onto that heap of obsolete things. It makes things just so complicated without any actual benefit.I hope, we never have summer time on Mars ;-)
Quote from: Hotblack Desiato on 09/27/2016 12:33 pmOkay, thank you for clarification.Honestly, summer-time should be onto that heap of obsolete things. It makes things just so complicated without any actual benefit.I hope, we never have summer time on Mars ;-)Make that winter time. Summer time at least gives us working people a few extra weeks of coming home while there's still daylight outside.I've been here long enough to be completely used to East Coast timezones.
T minus 100 minutes. Lines are growing outside the hall.