Updates SLS Updates

[diogom]

https://twitter.com/i/web/status/1590815556659081216

 

[Max-Q]

https://blogs.nasa.gov/artemis/2022...tions-ahead-of-next-artemis-i-launch-attempt/

Whew. Looks like no damage is apparent, they are still targeting Nov 16.
We’ll see what they find as more checkouts and tests are completed.

 

[Urwumpe]

The weather forecast for the 16th is also looking great, you really can't expect any better weather in Florida during this time of the year.

 

[Max-Q]

The weather forecast for the 16th is also looking great, you really can't expect any better weather in Florida during this time of the year.

Don’t jinx it!

 

[GLS]

https://twitter.com/i/web/status/1592301589389545476

Somehow I think it will launch this time.

 

[Urwumpe]

I am 70% sure it will launch. Sure enough to get out of my bed at 5AM to watch the launch. But I suspect, it will be scrubbed because of a hydrogen leak again.

 

[N_Molson]

From NASA's website :

Managers Give “Go” to Proceed Toward Launch, Countdown Progressing​

Artemis I managers convened Monday afternoon to review the status of countdown operations as well as two open technical items, and gave a “go” to proceed toward launch Wednesday, Nov 16. The two-hour window for launch opens at 1:04 a.m. EST.


Engineers examined detailed analysis of caulk on a seam between an ogive on Orion’s launch abort system and the crew module adapter and potential risks if it were to detach during launch. The mission management team determined there is a low likelihood that if additional material tears off it would pose a critical risk to the flight.

Technicians also completed replacing a component of an electrical connector on the hydrogen tail service mast umbilical. While swapping the component did not fully fix the issue, engineers have redundant sources of information supplied through the connector.

The countdown, which began Monday at 1:54 a.m., is progressing smoothly. All elements of the rocket and spacecraft are powered up. Overnight, teams will charge flight batteries, conduct final walkdowns at the launch pad, and check out communications with Orion.

The following milestones remaining in the countdown are below. Live coverage of tanking operations with commentary on NASA TV will begin on Tuesday, Nov. 15 at 3:30 p.m. Full launch coverage in English will begin at 10:30 p.m. Click here for the latest information on launch briefings and events.

And the full schedule :

L-32 hours and counting

• Core stage composite overwrapped pressure vessel (COPV) Pressurization to Flight Pressure (L-32M – L-23H)
• The ICPS is powered down (L-31H – L-30H30M)
• Charge Orion flight batteries to 100% (L-31H – L-27H)
• Charge core stage flight batteries (L-28H – L-22H)
• The ICPS is powered-up for launch (L-19H30M – L-16H30M)

L-15 hours and counting

• All non-essential personnel leave Launch Complex 39B (L-13H – L-11H)
• Ground Launch Sequencer (GLS) activation (L-11H15M – 10H15M)
• Air-to-gaseous nitrogen (GN2) changeover and vehicle cavity inerting (L-11H45M – launch)

L-10 hours, 40 minutes and counting

• 3.5-hour built in countdown hold begins (L-10H40M – L-7H10M)
• Launch team conducts a weather and tanking briefing (L-10H40M – L-9H50M)
• Launch team decides if they are “go” or “no-go” to begin tanking the rocket (L-9H40M)
• Core stage LOX transfer line chilldown (L-9H15M – L-9H)
• Core stage LH2 transfer line chilldown (L-9H15M – L-8H45M)

L-8 hours and counting

• Core stage LOX main propulsion system chilldown (L-9H – L-8H20M)
• Core stage LH2 slow fill start (L-8H45M – L-7H50M)
• Core stage LOX slow fill (L-8H20M – L-8H5M)
• Core stage LOX fast fill (L-8H5M – L-5H15M)
• Core stage LH2 fast fill (L-7H50M – L-6H10M)
• Engine bleed kick start (L-7H40M – L-7H20M)
• Core stage LH2 topping (L-6H10M – L6H5M)
• Core stage LH2 replenish (L-6H5M – launch)
• Core stage LOX topping (L-5H15M– L-5H5M)
• ICPS LH2 ground support equipment and tank chilldown (L-5H20M – L-5H)

L-5 hours and counting

• Core stage LOX replenish (L-5H5M – launch)
• ICPS LOX main propulsion system chilldown (L-5H5M– L-4H45M)
• ICPS LH2 fast fill start (L-5H5M – L4H5M)
• Orion communications system activated (RF to mission control) (L-4H20M – L-3H45M)
• ICPS LOX fast fill (L-4H55M– L-4H10M)
• ICPS LOX validation and leak test (L-4H10M – L-3H40M)
• ICPS LH2 validation and leak test (L-4H – L-3H40M)
• ICPS LH2 tank topping start (L-3H40M – L-3H25M)
• ICPS LH2 replenish (L-3H25M – launch)
• ICPS LOX topping (L-3H40M – L-3H20M)
• ICPS LOX replenish (L-3H20M – launch)
• ICPS/Space Launch System telemetry data verified with Mission Control Center and SLS Engineering Support Center (L-2H55M – L-2H45M)
• ICPS LOX validation and leak test (L-2H55M – L-2H30M)
• ICPS LH2 replenish (L-2H50M – launch)
• ICPS LOX topping (L-2H30M – L-2H10M)
• ICPS LOX replenish (L-2H10M – launch)
• ICPS/Space Launch System (SLS) telemetry data verified with Mission Control Center and SLS Engineering Support Center (L-3H – L-2H50M)

L-50 minutes and counting

• Final NASA Test Director briefing is held (L-50M)

L-40 minutes and holding

• Built in 30-minute countdown hold begins (L-40M)

L-15 minutes and holding

• The launch director polls the team to ensure they are “go” for launch

T-10 minutes and counting

• Ground Launch Sequencer (GLS) initiates terminal count (T-10M)
• GLS go for core stage tank pressurization (T-6M)
• Orion ascent pyros are armed (T-6M)
• Orion set to internal power (T-6M)
• Core stage LH2 terminate replenish (T-5M57S)
• GLS is go for flight termination system (FTS) arm (T-5M)
• GLS is go for LH2 high flow bleed check (T-4M40S)
• GLS is go for core stage auxiliary power unit (APU) start (T-4M)
• Core Stage APU starts (T-4M)
• Core stage LOX terminate replenish (T-4M)
• ICPS LOX terminate replenish (T-3M30S)
• GLS is go for purge sequence 4 (T-3M10S)
• ICPS switches to internal battery power (T-1M56S)
• Core stage switches to internal power (T-1M30S)
• ICPS enters terminal countdown mode (T-1M20S)
• ICPS LH2 terminate replenish (T-50S)
• GLS sends “go for automated launch sequencer” command (T-33S)
• Core stage flight computer to automated launching sequencer (T-30S)
• Hydrogen burn off igniters initiated (T-12S)
• GLS sends the command for core stage engine start (T-10S)
• RS-25 engines startup (T-6.36S)

T-0

• Booster ignition, umbilical separation, and liftoff

 

[GLS]

I am 70% sure it will launch. Sure enough to get out of my bed at 5AM to watch the launch. But I suspect, it will be scrubbed because of a hydrogen leak again.

If you are in Germany, it should be at 7AM... unless you want to watch 2 hours of cringeworthy broadcast.

 

[Urwumpe]

If you are in Germany, it should be at 7AM... unless you want to watch 2 hours of cringeworthy broadcast.

Of course I want the full 2 hours of cringeworthy broadcast. Without it, something would be missing. (If possible augmented by German "experts", who don't know that the SSME operates on hydrogen)

For compensation, I'll ignore the FIFA world cup, OK?

 

[Max-Q]

I am 70% sure it will launch. Sure enough to get out of my bed at 5AM to watch the launch. But I suspect, it will be scrubbed because of a hydrogen leak again.

It’d better! I have $ invested in an airline ticket to the cape…

 

[N_Molson]

Well the whole countdown phase builds the hype train, that's how it works. In the case of the SLS, it isn't even a train anymore, it is like a Super Star Destroyer of Hype.

 

[Urwumpe]

Well the whole countdown phase builds the hype train, that's how it works. In the case of the SLS, it isn't even a train anymore, it is like a Super Star Destroyer of Hype.

You can guess what happens, if SpaceX launches their latest grain silo. Just igniting 14 Raptor engines at once already makes many fans drool....

 

[steph]

I'm just gonna go to sleep and check it first thing in the morning. I'm not exactly expecting it to fly , but it would be nice to find out it's at TLi as I drink my morning coffee

 

[Thunder Chicken]

Core stage is fully fueled.

https://twitter.com/i/web/status/1592679117018865664

 

[Thunder Chicken]

I keep pressing T but the countdown won't go any faster. C'mon, I want to go to bed...

 

[Max-Q]

I keep pressing T but the countdown won't go any faster. C'mon, I want to go to bed...

I don’t think T works for SLS… Not much of anything works on SLS.
This booster has Gremlins.

 

[Urwumpe]

I don’t think T works for SLS… Not much of anything works on SLS.
This booster has Gremlins.

Its worse, even Gremlins would be too scared to go on this one....

 

[GLS]

Extending the hold = delaying T0.

 

[GLS]

T0 maybe 30 minutes away.

https://twitter.com/i/web/status/1592764508883517440

 

[GLS]

For 30 years they played the LCC comm channels on the broadcast, and now it's almost a favor or a bonus to have it...

Anyway, everybody go for launch!