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"The mission will explore the operational limits of Vulcan" - interesting! The ULA link doesn't really expand on that.

Mostly on the Centaur V side @torybruno?

View: https://twitter.com/torybruno/status/1822394450527789244


The will be some maneuvers that help us more fully characterize Centaur

What will the test payload be?

View: https://twitter.com/torybruno/status/1822399435038679101


Inert steel plus some very interesting CV tech experiments
CV= Centaur V.
 
After Tory confirmed there are 2 SRBs for this mission:

Is there a reason for that? Since this one is flying a mass simulator, would it be a good idea to have it fly on a 0 booster configuration, with a lighter dummy payload, in order to save the GEMs for another launch?

View: https://twitter.com/torybruno/status/1822406830221562237


Partly because we could start with the CERT1 trajectory and add to that. This same time and allowed us to give DreamChaser just a little more time before switching
 
View: https://twitter.com/torybruno/status/1831423975630782663


Judging by the fog,… I’d have to say this is Vandenberg SLC3 receiving a brand new 70k gallon (265k liter) liquid hydrogen tank for #VulcanRocket’s Centaur V. Together with the Atlas tank, the pad capacity has more than tripled to 100k gallons.

You mentioned activating the pad early next year. Will we see a Vulcan shipped out to Vandenberg earlier in the year to do fit checks/pad checkouts well in advance of the first west coast flight?

View: https://x.com/torybruno/status/1831646744142037064


 
View: https://twitter.com/torybruno/status/1837517035716084194


Up she goes! Thought you might enjoy a #ToryTimeLapse of the encapsulated #Cert2 going atop #VulcanRocket
View: https://twitter.com/ulalaunch/status/1837547596291739816


The second United Launch Alliance #VulcanRocket stands fully assembled for launch NET Oct. 4 on #Cert2 to fulfill flight test obligations and complete its certification process with the U.S. Space Force to carry national security payloads starting later this year.

Learn more in our blog:

 
The Second Vulcan Launch: From Factory to Launch

Sep 24, 2024
A United Launch Alliance (ULA) Vulcan VC2S rocket will launch the second certification (Cert-2) mission from Space Launch Complex-41 at Cape Canaveral Space Force Station, Florida. The Cert-2 mission includes an inert payload and demonstrations associated with future Centaur V technologies. This is the second of two test flights required for ULA's certification process with the U.S. Space Force.

View: https://www.youtube.com/watch?v=5EMCGyhNVwM
 
Hey Tory, I will be attending the launch on Friday. I understand that the window is from 6 am to 9 am. How long before launch will we have a targeted launch time?

Will their be a live stream?

Thanks for all you do.

View: https://twitter.com/torybruno/status/1841582580530864447


Now: The targeted time is 6am (local). If there is lightning, a glitching instrument, or a stuck valve, etc, we can take time to sort that out and still launch as late as 9am.

Yes

View: https://twitter.com/blueorigin/status/1841582548855751036


Team Blue is looking forward to @ulalaunch’s Vulcan #Cert2 launch powered by two of our #BE4 engines! Each engine will produce 550,000 pounds of thrust. #PoweredByBE4
 
ULA launches second Vulcan flight, encounters strap-on booster anomaly

One of two solid-propellant strap-on boosters provided by Northrop Grumman suffered an anomaly of some sort during the climb out of the lower atmosphere, but the Vulcan managed to continue on into orbit. What impact the issue might have on the Vulcan’s certification is not yet known, but ULA CEO Tory Bruno said it will be investigated.

“The trajectory was nominal throughout,” he said on the company’s launch webcast. “We did, however have an observation on SRB No. 1, so we will be off looking at that after the mission is complete.” No other details were provided.
 
I cannot help feeling the fact that the F9 doesn’t rely on SRBs is a distinct advantage.

On the positive side the BE-4s performed well again.
 
@torybruno Do you have any info on the SRB anomaly that occurred at the start of the flight? Also Vulcan handled the asymmetric thrust so well, that was impressive! And an orbital bullseye!

View: https://twitter.com/torybruno/status/1842238190826164407


Yes

Nozzle anomaly on SRM-1. Reduced and asymmetric thrust.

Rocket compensated, as designed.

Nominal trajectory. Bullseye insertion
View: https://twitter.com/torybruno/status/1842239927641129294


No energetic events occurred.

Also, did you notice that the Centaur had to burn a full 20 seconds longer than normal to get its tiny mass simulator into orbit? I'd guess that translates to a failure to get a payload that's anywhere near the Vulcan's true payload capability anywhere near orbital speed today.

View: https://twitter.com/torybruno/status/1842240181262303533


No. Standard reserves were adequate. Margins were not used

It has to have had a huge overcapacity for the core stage to be able to compensate for the thrust asymmetry after losing the nozzle. No way it could have achieved orbit with a full payload.

View: https://twitter.com/torybruno/status/1842238611049103784


Incorrect
 
I cannot help feeling the fact that the F9 doesn’t rely on SRBs is a distinct advantage.

On the positive side the BE-4s performed well again.
Good SRBs can be extremely reliable.
I quickly made the count, the last in-flight propulsive failure of a French or French designed/supervised (so excluding Avio-designed Vega upper stage) large SRB (Orbital launcher or Large Ballistic missile) is from... 1977! That's more than 300 launches using at least 700 SRBs, none of the failure were caused by SRBs.

Anyway, back on topic, the FAA considers that no mishap investigation is required. (However i'm hearing rumours it's not entirely decided, but take the official word for it for now)
View: https://x.com/SpcPlcyOnline/status/1842299962979410425


For those asking about the criterias, here they are:

401.5 governs all non Part 450 launch licenses (Vulcan is non-Part 450)
401.7 is the definition set for Part 450 that everyone will need to move to (Falcon 9 is under it, for exemple)

1728084402319.jpeg 1728084391979.jpeg
 
Whatever happens I’m guessing that they can fly it in the basic configuration without any SRB’s attached to it.
 
That is until they can sort the problem out then launch Vulcan in full configuration.
 
Glad to hear Tory! How much margin was there, with this being an inert payload?

If it would have been a heavier bird, would the same accuracy and precision still have been possible?

View: https://twitter.com/torybruno/status/1842241652557037832


Yes

Sorry about the confusing terms on art.

All missions have propellant reserves

We add to that additional propellant margins based on the mass & the configuration of the rocket

Because this was compensated for within reserves, this anomaly was “invisible” to the rocket
And a fair bit of luck that the SRB burn-through wasn't toward the main stage...

View: https://twitter.com/torybruno/status/1842242289319494146


Not a burn though


Looks pretty energetic

View: https://twitter.com/torybruno/status/1842242693444878775


Yes, it looks dramatic, like all things on a rocket. But, it’s Just the release of the nozzle. No explosions occurred

View: https://twitter.com/torybruno/status/1842243739214913737


Nozzle anomaly. Case and grain fine. Reduced, asymmetric thrust. Compensated for by booster

View: https://twitter.com/torybruno/status/1842243903476678736


Again, not a case burn through.
 
I was wading through the comment section on Scott Manley's page--I thought I saw something about John Carmack having a program which helped out on this--any details?
 
View: https://twitter.com/torybruno/status/1843379189803839678


As promised, here's a clip from one the new camera angles freshly cleared through ITAR.

string for extra drag?

View: https://twitter.com/torybruno/status/1843381216667677066


A long, low release force harness that continues to collect data from the fairing after it has separated from the rocket. (this is the 51 foot fairing, for scale)

@torybruno what induces the oscillation seen in the fairing?

View: https://twitter.com/torybruno/status/1843383300595105797


Forces from the separation system
 
Seeing those be4 rockets clearly articulating towards the side of the damaged booster is very impressive stuff. They seem to be quite capable along with the flight systems.

Edit: added words
 

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