James Webb Space Telescope (Technical Post ONLY !)

Dilandu said:
...They dropped it?...
Click to expand...
Wouldn't be the first time.

9.6.2003_01.lrg.jpg

Womp-womp...
 
Apollo 13's problems began with:

"the No. 2 oxygen tank onboard Apollo 13 had been accidentally dropped during maintenance before the Apollo 10 mission in 1969, causing slight internal damage that didn’t show up in later inspections."

www.history.com

What Went Wrong on Apollo 13? | HISTORY

It was supposed to be the third‑ever moon landing. It turned into a rescue mission.
www.history.com www.history.com
 
Orionblamblam said:
Dilandu said:
...They dropped it?...
Click to expand...
Wouldn't be the first time.

9.6.2003_01.lrg.jpg

Womp-womp...
Click to expand...
Jesus a person on my team dropped a Dell server that was a big as a small coffin and "time stood still" while we all looked at each other and suppressing the urge to run.........the boss came down....looked ....and said. give me the serial numbers we got insurance for this....we were relieved but when the replace was there the boss helped us unbox and install it in the racks... good days
 
As much as these mistakes seem comical...when you guys get a telescope into orbit, let me know. Or most any other organization for that matter. Right now the Hubble is the gold standard, and it has been in service for two decades or so and I don't see Russia, Europe, Japan, China, etc putting up a replacement no matter how much we mutha fuk NASA on this thread.

I think their talent pool could use a little chlorine, but you can't point to anyone doing more ambitious science than them.
 
Richard N said:
Apollo 13's problems began with:

"the No. 2 oxygen tank onboard Apollo 13 had been accidentally dropped during maintenance before the Apollo 10 mission in 1969, causing slight internal damage that didn’t show up in later inspections."

www.history.com

What Went Wrong on Apollo 13? | HISTORY

It was supposed to be the third‑ever moon landing. It turned into a rescue mission.
www.history.com www.history.com
Click to expand...

Indeed ! But Webb was no longer administrator :p

My suggestion
- holy water & exorcism
- silver bullets or garlic
- hire a voodoo or chaman
 
Josh_TN said:
As much as these mistakes seem comical...
Click to expand...

When they're not *your* mistake, they're *hysterical.* I was working at United Tech when Lockheed dumped that satellite; when we found out what the cause was, we laughed and laughed and laughed... and then reviewed our own procedures.
 
If you look at the date this event actually occurred it was something like two weeks ago so I imagine much of the testing has already been done, and the four day launch slip is the extra time they need to finish things up after eating up the two week margin they had in the launch campaign.
 

Testing Confirms Webb Telescope on Track for Targeted Dec. 22 Launch – James Webb Space Telescope

blogs.nasa.gov blogs.nasa.gov

Engineering teams have completed additional testing confirming NASA’s James Webb Space Telescope is ready for flight, and launch preparations are resuming toward Webb’s target launch date of Wednesday, Dec. 22, at 7:20 a.m. EST.

Additional testing was conducted this week to ensure the observatory’s health following an incident that occurred when the release of a clamp band caused a vibration throughout the observatory.

On Wednesday, Nov. 24, engineering teams completed these tests, and a NASA-led anomaly review board concluded no observatory components were damaged in the incident. A “consent to fuel” review was held, and NASA gave approval to begin fueling the observatory. Fueling operations will begin Thursday, Nov. 25, and will take about 10 days.

The Webb Space Telescope is an international partnership with the European and Canadian space agencies. It will explore every phase of cosmic history – from within our solar system to the most distant observable galaxies in the early universe, and everything in between. Webb will reveal new and unexpected discoveries, and help humanity understand the origins of the universe and our place in it.
Click to expand...
 

Testing Confirms Webb Telescope on Track for Targeted Dec. 22 Launch - Arianespace

Engineering teams have completed additional testing confirming NASA’s James Webb Space Telescope is ready for flight, and launch preparations are resuming toward Webb’s target launch date of Wednesday, Dec. 22, at 7:20 a.m. EST.
www.arianespace.com www.arianespace.com

”On Wednesday, Nov. 24, engineering teams completed these tests, and a NASA-led anomaly review board concluded no observatory components were damaged in the incident. A “consent to fuel” review was held, and NASA gave approval to begin fueling the observatory. Fueling operations will begin Thursday, Nov. 25, and will take about 10 days."
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Now that the JWST has been encapsulated they must be ready to stack it on the Ariane 5 rocket.
 
Webb fuelled for launch

The James Webb Space Telescope was fuelled inside the payload preparation facility at Europe’s Spaceport in French Guiana ahead of its launch on Ariane 5.

Webb’s thrusters will use this propellant to make critical course-corrections after separation from Ariane 5, to maintain its prescribed orbit about one and a half million kilometres from Earth, and to repoint the observatory and manage its momentum during operations.

Fuelling any satellite is a particularly delicate operation requiring setup of the equipment and connections, fuelling, and then pressurisation.

Webb’s propellant tanks were filled separately with 79.5 l of dinitrogen tetroxide oxidiser and 159 l hydrazine. Oxidiser improves the burn efficiency of the hydrazine fuel.

These propellants are extremely toxic so only a few specialists wearing Self-Contained Atmospheric Protective Ensemble, or ‘scape’ suits, remained in the dedicated fuelling hall for fuelling which took 10 days and ended on 3 December.

The next steps will start soon for ‘combined operations’. This is when specialists working separately to prepare Webb and Ariane 5 will come together as one team. They will place Webb atop its Ariane 5 launch vehicle and encapsulate it inside Ariane 5’s fairing.

Then, no longer visible, Webb, joined with its Ariane 5 launch vehicle will be transferred to the Final Assembly building for the final preparations before launch.

Webb will be the largest, most powerful telescope ever launched into space. As part of an international collaboration agreement, ESA is providing the telescope’s launch service using the Ariane 5 launch vehicle. Working with partners, ESA was responsible for the development and qualification of Ariane 5 adaptations for the Webb mission and for the procurement of the launch service by Arianespace.

Webb is an international partnership between NASA, ESA and the Canadian Space Agency (CSA)

www.esa.int

Webb fuelled for launch

Webb fuelled for launch
www.esa.int
 
Webb moved to meet Ariane 5

The James Webb Space Telescope was transferred to the final assembly building at Europe’s Spaceport in French Guiana on 7 December 2021, to meet its Ariane 5 launch vehicle.

Stowed inside a special 23-tonne transport container, Webb was protected and monitored throughout the transfer.

Ariane 5 was already moved to the same building on 29 November. Here, adjustable platforms allow engineers to access the launch vehicle and its payload.

The next steps are to hoist Webb to the upper platform which has been prepared so that Webb can be integrated on Ariane 5’s upper stage and then encapsulated inside Ariane 5’s specially adapted fairing.
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NMaude said:
Flyaway said:
It sometimes feels like JWST is cursed!!!
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I wonder if one of the technicians fucked up when handling it?
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Transcript of the incident:

“Hey Nitwit! Hand me the tools!”

“What tools?”

“The tools we been using thirty years!”

“Ohh…THOSE tools…nyuk…whoops!”

“You lame-brain!”
 
www.bbc.com

James Webb Space Telescope given revised 24 December launch

The US and European space agencies are now ready to proceed with the launch of Hubble's successor.
www.bbc.com www.bbc.com

science.slashdot.org

Astronomers Nervously Counting Down to Christmas Eve Launch of $10B Webb Telescope - Slashdot

"What do astronomers eat for breakfast on the day that their $10 billion telescope launches into space?" asks the New York Times. "Their fingernails." The worst-case scenario is "You work for years and it all goes up in a puff of smoke," they're told by Marcia Rieke of the University of...
science.slashdot.org


www.bbc.com

James Webb: A $10bn machine in search of the end of darkness

The biggest space telescope ever built is ready to show us the first stars to light up the cosmos.
www.bbc.com www.bbc.com
 
Flyaway said:
The launch of the JWST has been delayed to Christmas Day due to weather, apparently this isn’t that uncommon at time of year.
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December 21 is autumn-winter transition day in the northern hemisphere; if I'm reasonning correctly, must be the spring-summer transition day in the southern hemisphere (at least La Réunion island works this way, but we are talking about French Guiana here).
Must be thunderstorms or heavy rains or something like this...

(goddam Webb will play on our nerves until the very last moment)
 
Archibald said:
Flyaway said:
The launch of the JWST has been delayed to Christmas Day due to weather, apparently this isn’t that uncommon at time of year.
Click to expand...

December 21 is autumn-winter transition day in the northern hemisphere; if I'm reasonning correctly, must be the spring-summer transition day in the southern hemisphere (at least La Réunion island works this way, but we are talking about French Guiana here).
Must be thunderstorms or heavy rains or something like this...

(goddam Webb will play on our nerves until the very last moment)
Click to expand...
See below for the 10 day weather forecast for the launch site.

https://twitter.com/x/status/1473415065978257410
View: https://twitter.com/michaelroston/status/1473415065978257410
 

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