David Chenevert

[David Chenevert @dchenevert1610]

@DutchSatellites fwiw, "PSET" means "Program Specific Engineering Test"

https://t.co/vtrgYG311S

The document is a trip down memory lane.... SLS / Orion in its 2016 glory. Lots of colored pictures.

[David Chenevert @dchenevert1610]

@SciGuySpace found PSET...

"Baseline the VAB Program Specific Engineering Test (PSET) Plan (February)"

https://t.co/vtrgYG311S

[David Chenevert @dchenevert1610]

@ChrisParry @a47524439 @Manic_Marge @elonmusk uh, i'm agape. is this a troll?

[David Chenevert @dchenevert1610]

@DJSnM time just flies... imagine, in another 6 years, what font the sign will use?

[David Chenevert @dchenevert1610]

@Teslarati @SpaceX @RDAnglePhoto How can Our Government ensure that "Emperor" Musk does not redirect the asteroid towards his enemies on Earth?
(asking for a rocky planet)

[David Chenevert @dchenevert1610]

@elonmusk @business a clock that runs backwards is right 4x/day

[David Chenevert @dchenevert1610]

@elonmusk @Tenjin37151 @Space_Station @SpaceX @Commercial_Crew @NASA @esa @JAXA_en @astro_kimbrough @Astro_Megan @Thom_astro @Aki_Hoshide Nice for sending mass.

Also by the end of the book, for transmitting information:
"We would like a little more independence kthxbai"

[David Chenevert @dchenevert1610]

@elonmusk @Rainmaker1973 If 'fusion' were turned off dozens of astronomers would become unemployed in 8 minutes
other than that, no noticeable effect in our lifetimes

[David Chenevert @dchenevert1610]

@DaddyDoge2Mars @elonmusk @Rainmaker1973 at least that beats "I dropped the spanner"

[David Chenevert @dchenevert1610]

@elonmusk @Rainmaker1973 photons leave the center of the sun because of photon pressure
it takes them 10s of thousands of years to get to the surface
then *vhm* 'off we go' across the universe

[David Chenevert @dchenevert1610]

@NASASpaceflight @BocaChicaGal seasons don't fear the reever

[David Chenevert @dchenevert1610]

@nextspaceflight Is this not a watershed event? every future Mars rover plan will at least consider a flying-sidekick, right?

[David Chenevert @dchenevert1610]

@JakeSherman @maggieNYT don't con me BIF

[David Chenevert @dchenevert1610]

@howarth_cornell @ABarnardNYT for context: I'm extremely bearish about hydrogen in the next 5 years.
but
Is there not a plausible scenario in which electricity becomes too cheap to meter :) , at which point the power cost of H2 would be zero? ("too cheap to meter" during summer and other overcapacity times)

[David Chenevert @dchenevert1610]

@joroulette @elonmusk @wapodavenport a depot. each Tanker "supplies fuel" to [DELETED] third spacecraft.

[...sixteen total launches, consisting of: 1 launch of [DELETED]; 14 launches of Tanker Starships to supply fuel to [DELETED]; and 1 launch of HLS Lander Starship, which would [DELETED] then travel to the Moon]

[David Chenevert @dchenevert1610]

@NASASpaceflight I don't understand "confident" and "!". Did I miss a key sentence?

[David Chenevert @dchenevert1610]

@DJSnM derp, I meant... "2004" -> "2024", "2008" -> "2028", etc.

[David Chenevert @dchenevert1610]

@DJSnM I just have to ask: SLS timeline was 2004 + 3 -> 2007 (ha)
FH timeline: 2004 + 6 -> 2010. "6" instead of "3" because it has less energy (aka delta-V).

how much energy would a fully refueled starship have? could it do something like 2008+2 -> 2010?

[David Chenevert @dchenevert1610]

@ryannagata @DJSnM Cry Havoc! and let slip the dogs of space helmets...

[David Chenevert @dchenevert1610]

@austinbarnard45 if you do space-work for a government or business: you are a '~~~naut'
if you buy your way to space: you are a 'space voyager'
or perhaps just 'voyager' once the dust settles.
If I had my druthers, all the '~~~naut' words would be unified to e.g. 'spacer'.