#Certification Mission 2 | Vulcan VC2S

1191 messages · Page 2 of 2 (latest)

unkempt zenith
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Yeah it's definitely a mishap, and ULA will do their investigation, but it's not one that needs a FAA investigation

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There was no loss of vehicle or mission, and the debris fell within the hazard area's

plain niche
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Like there is this impression a lot of space influencers give that the FAA just hand picks what is investigated and what isn’t

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When it is literally defined by US law

mint lava
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Big question is what does the DOD think

vague venture
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9-3 was not a simple engine out on ascent lmao

rustic token
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yes hence the TrollPolite

vague venture
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oh okay cool

upper shuttle
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I wanna hear what the NRO and USSF think

rustic token
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of what? sorry need to silence a rogue spacex boy rq

plain niche
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Code of Federal Regulations

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Specifically 14 CFR 401.5

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401.5 governs all non Part 450 launch licenses (which I believe Vulcan is not 450)

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401.7 is the definition set for Part 450 that everyone will need to move to

unkempt zenith
vague venture
# plain niche

so basically it’s not a mishap because it got to orbit?

plain niche
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Yeah like the mission was completed as planned and nobody got put at any more risk than ordinary

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It’s certainly a very undesirable condition and a near miss and ULA will complete a full internal investigation for their own sake

upper shuttle
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So do you think we’ll see another Vulcan launch before the end of the year?

unkempt zenith
plain niche
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Entirely depends on what the root cause is

unkempt zenith
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I think we will

plain niche
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If it’s a one off defect kinda sucks but it’s plausible

vague venture
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deffo depends on the outcome of investigation and any corrective actions

plain niche
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If it’s a design flaw in the 63XLs then probably not

unkempt zenith
upper shuttle
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I don’t think we’ll see the other one that was planned for this month actually launch this month

upper shuttle
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Next month at the earliest

unkempt zenith
upper shuttle
upper shuttle
vague venture
polar hawk
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Ahh..;

upper shuttle
polar hawk
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Elon really did win

unkempt zenith
polar hawk
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now every FAA "decision" /conclusion of a mishap or not is scrutinized by the public

chilly creek
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Tbh it probably would not have fallen under the definition of a mishap for part 450

IMG_2681.jpg
plain niche
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I think a lot of people assume that the FAA regulates like, reliability or effectiveness of launch vehicles in a way similar to aviation

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Which is a fair assumption but sets you up for a lot of surprises when by law the only thing their regulations are ever allowed to be for is public safety

unkempt zenith
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Parking orbit was 500km circular inclined 30 degrees

vague venture
plain niche
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FTS, launch abort, etc

vague venture
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gotcha

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starship flight 1 core

plain niche
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Yeah an engine giving out is not safety critical. However if your flight rules mean that you’re fucked and some form of flight termination needs to kick in as a result and it doesn’t then you’ve failed

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Like I don’t believe CRS-1(?) was a mishap

dim onyx
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vulcan so badass it can take an srb exploding and still survive B)

flat saffron
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let's goo

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vulcan goat

polar hawk
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Daily reminder that French and French supervised large SRBs have a perfect (zero failure or partial failure) flight record over almost the last 50 years

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having SRBs that fail is quite literally a skill issue

dim onyx
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isnt vega french supervised? AvioMoment

polar hawk
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nope, Italian

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P80 is CNES designed, but that has had no failure

dim onyx
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well somehow its still the french's fault i just know it /s

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but seriously tho that's quite impressive

polar hawk
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Last french large SRBs that failed were during test flight of.. I think M3 SLBM in the late 70s

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Ariane 3/4 SRBs were Italian made under CNES design/supervision and never failed (but had some pretty wide performance margin, admitedly), Ariane 5 (mostly french, a bit italian SRB) never had SRB failure, M4 and M45 no propulsive failure, M51 test failure is not propulsive

polar hawk
polar hawk
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so there have been 700 succesful large french/French supervised SRB flights in a row over the past 47 years

little verge
chilly creek
vague venture
vague venture
upper shuttle
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Someone sent this to me, idk who took it but it’s pretty

IMG_4273.jpg
empty cradle
upper shuttle
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I understand why now

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Like

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There wasn’t a reason to bc the FAA rule book didn’t say it was needed

empty cradle
little verge
flat saffron
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lmao

pale totem
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Pretty sure if that was a normal payload it would've failed?

Don't think generally that much overcorrection capacity in terms of booster dV
And Centaur well doesn't have the trust mostly

rustic token
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no

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tory said that they didnt even run into the centaur margins

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standard reserves got it into orbit fine

chilly creek
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And remember just because it didn't carry any payload it doesn't mean it didn't have any mass up top

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The inert payload was supposedly 1.5 tonnes

copper dawn
empty cradle
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fr

polar hawk
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I'm glad that the superior meme is high on sxmr

upper shuttle
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Vulcan was already my favorite

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Now it’s even more

rustic token
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remove the failure from your bio you vulcan hater

upper shuttle
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Uh

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I added that when I wasn’t sure what just happened and forgot to change it 💀

polar hawk
flat saffron
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the ground tracking shots were unreal for this launch

rustic token
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reminds me of the cosmo skymed

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stuff

chilly creek
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I wonder how much more dramatic it would have been during a nighttime launch

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Since you can't see the rocket too well and all

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We'd be seeing sparks coming off, the blowout and think it had exploded

upper shuttle
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I’m glad it ended up delaying so it launched in sunlight

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We could see more

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While a jellyfish would’ve been cool, it’s better to have launched when it did

glacial quail
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Those are some sweet views

plain niche
upper shuttle
upper shuttle
ivory forge
upper shuttle
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I WANT TO BE HERE

image.png
empty cradle
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wake up babe, ULA has dropped Launch Highlights

upper shuttle
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How do I get there

warm cloud
upper shuttle
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HELL YEAH

upper shuttle
flint swallow
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yeey

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Despite there being no sound in space or the video you can still hear the fairing there

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that said I think there was a highlight in that launch ula missed

timber briar
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it’s flapping away

ivory forge
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didn't know fairings can get so flappy

pale totem
ivory forge
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ah

upper shuttle
vague venture
rustic token
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not really

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RCS, TPS and parachutes

pale totem
vague venture
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no clue

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but implying they’re not flappy because of reuse means structural changes

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and if they weren’t flappy before maybe it was just a convenient thing

rustic token
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theyve always been more not flappy

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its not a specifically purposeful choice

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just an effect of it tapering out at the bottom

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to fit 5m payloads

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Youll notice fairings such as vulcan mostly flap at the bottom because they have no taper

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compared to the top

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top is fine, bottom is what flaps

image.png
pale totem
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yeah no shaping means way less structural integrity

vague venture
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oh huh

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makes sense

upper shuttle
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What system does ULA use to identify which side booster is which

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Like some companies do port and starboard

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Is it the same for Vulcan?

vague rapids
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if I had to guess, some sort of clocking arangement. Since Vulcan has symetrical SRB spots, I wouldn't be shocked if it's a star pattern

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(as in the attachments used for VC2+ are always 1 and 2, the ones used for VC4+ are always 3 and 4, and VC6 having 5 and 6)

upper shuttle
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I’ll try and ask Tory and see if I get a response

rustic token
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so i assume they just carried that onto vulcan

unkempt zenith
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Sounds like they went out and collected the lost nozzle

rustic token
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SMART???

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hoły shit

vague venture
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they found the thing??

unkempt zenith
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Apparently

rustic token
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shouldn’t be too hard considering people tracked it

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they likely knew exactly where it fell

chilly creek
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I'm more surprised they even had a boat to go recover it in time before Milton

upper shuttle
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SMART REUSE LETS_GOOO

vale wyvern
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GEM can be reused

timber saddle
mint lava
timber saddle
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I remember people speculating up to 15-20% thrust loss of the whole vehicle back then

olive path
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Nozzle blowing up is probably a little more than a 2% loss for that booster yeah

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But the boosters aren't that much of the thrust of the rocket

upper shuttle
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It seemed to make the booster run out of fuel faster than the other though

olive path
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iirc

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Wider throat, different burn time

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But they were only like two seconds from each other so

unkempt zenith
polar hawk
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SMART

foggy island
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"We recovered some small pieces of the GEM 63XL SRB nozzle that were liberated in the vicinity of the launch pad," Arnold said. "The team is inspecting the hardware to aid in the investigation."

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So it was breaking up right off the pad?

ivory forge
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Rapid Unscheduled Liberation?

rustic token
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liberation is always scheduled

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RAHHHHHH

flat saffron
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Rapid Unscheduled Observation

vale wyvern
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Smart Unscheduled Observation TrollPolite

upper shuttle
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I’m having a discussion about Vulcan in another server and we’re talking about the LEO version, what does CVL stand for

uneven harbor
upper shuttle
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Ah

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That should’ve been apparent

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Thanks

flint swallow
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there’s gotta be a better way to talk about that

nova forge
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no. make the acronym even worse

ivory forge
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CVL... light aircraft carrier lol