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Count Nerfedalot
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Reply #1435 on: December 11, 2020, 08:04:55 PM

Only one of three Raptor engines working while it tried to land.  Needs better brakes.

Yes, I know I'm paranoid, but am I paranoid enough?
calapine
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Reply #1436 on: December 31, 2020, 11:17:00 AM

I wrote a quick overview of what 2021 brings in space (rockets, rovers, probes)

The thread has over 30 images, so instead of copy/paste here is the link:

https://twitter.com/AuerSusan/status/1344655344992210945




Restoration is a perfectly valid school of magic!
Mandella
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Reply #1437 on: December 31, 2020, 07:31:45 PM

Time for end of/beginning of the year space lists?

I enjoyed Tim Dodd's (The Everyday Astronaut) Astro Awards this year. Some surprises in how he ordered things, but I appreciated his rationales. And for those who avoid him due to his characteristic exuberance, he was pretty quiet and mellow for this webcast.

Lots of good video clips of all the neat things that happened spacewise this year too.

https://www.youtube.com/watch?v=h2f0vqgYdLc
calapine
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Reply #1438 on: January 01, 2021, 09:21:15 AM

Time for end of/beginning of the year space lists?

I enjoyed Tim Dodd's (The Everyday Astronaut) Astro Awards this year. Some surprises in how he ordered things, but I appreciated his rationales. And for those who avoid him due to his characteristic exuberance, he was pretty quiet and mellow for this webcast.

Lots of good video clips of all the neat things that happened spacewise this year too.


The video is interesting, but 53 minutes long, buuuut there are timestamps for each of the top 10.
Informative too. CrewDragon being #1 wasn't a suprise, but did not know, for example, that the ISS got a new airlock, made by a private company.

=====

Some outtakes from the Soyuz launch I mentioned upthread.







Source is this time-lapse video (duration 1 minute), which itself is worth watching:

https://www.youtube.com/watch?v=molMEKLwYaw

Restoration is a perfectly valid school of magic!
calapine
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Reply #1439 on: January 01, 2021, 10:13:44 AM

Interesting Soyuz detail:


Soyuz doesn't stand on the launchpad, but is suspended over it. Held in place by the four main support arms. Here seen during pad construction:



Below are triangular guides (yellow-black) that provide extra stability and two additional arms (black) for umbilical lines. (The platform was only present during construction).


Here with a clear view into the flame deflector:




And here with rocket attached. The system is the same for all Soyuz launchpads, but the "house" is a mobile gantry that is a Kourou speciality.
(Main reason for it is to allow vertical integration of satellites, which a lot western sats require.)




The way the primary support arms work is typically Russian fool-proof:
Once the launcher builds thrust the load on the support arms decreases, allowing them to move outwards by the force of counterweights located at their base.

Counterweighs during their installation:



Because of the characteristic opening movement this setup is called the "Tulip".


Here the mobile gantry in action (sorry for the potato quality):


As you can see, rocket is cut of at the neck. The fairing, and inside that the satellite, is missing.
They are added in the next step (vertical integration). On a Baikonur Soyuz the launcher would be rolled out in it's complete configuration.




To close, bonus fun fact:
Ariane 6 will have a similar mobile gantry, only this one is 90 meters tall (the Soyuz is 52m) and weights 8200 tons.



Hope that was interesting smiley
« Last Edit: January 01, 2021, 10:20:35 AM by calapine »

Restoration is a perfectly valid school of magic!
Hammond
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Reply #1440 on: February 18, 2021, 11:44:35 AM

So today is the scheduled landing of the Perseverance rover on Mars. Starting at 11 am Pacific standard time is the start of the Landing Coverage with the landing windows around 1 PM. Much like the Curiosity landing they are going with the bonkers sky crane landing with a added twist of much worse terrain. Should be fun.


Nasa's site (the animation is bonkers)

https://mars.nasa.gov/mars2020/

Youtube live feed

https://www.youtube.com/watch?v=w23gC0WhXdI&ab_channel=SPACE%28Official%29
01101010
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Reply #1441 on: February 18, 2021, 02:29:43 PM

Welp, so much for doing anything work related for the next half an hour.

edit: thankfully uneventful and successful. Pretty intense in the lead up... way more than I thought.
« Last Edit: February 18, 2021, 03:11:11 PM by 01101010 »

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calapine
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Reply #1442 on: February 18, 2021, 09:11:17 PM

Good image that shows Terrain Relative Navigation system did a good job:



« Last Edit: February 18, 2021, 09:13:14 PM by calapine »

Restoration is a perfectly valid school of magic!
calapine
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Reply #1443 on: February 18, 2021, 09:30:51 PM

Here is a zoomed out version. (Note the two upper craters just being small dots in this image)


Restoration is a perfectly valid school of magic!
Mandella
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Reply #1444 on: February 22, 2021, 01:32:33 PM

Wow. Watching the Monday press conference right now. Look at those landing videos! Cameras everywhere on Perseverance!

Here's to the start of years and years of science and exploration from this rover!

 DRILLING AND MANLINESS DRILLING AND MANLINESS Oh ho ho ho. Reallllly?
pxib
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Reply #1445 on: February 22, 2021, 02:30:35 PM


if at last you do succeed, never try again
Trippy
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Reply #1446 on: February 22, 2021, 02:35:14 PM

Hammond
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Reply #1447 on: February 23, 2021, 09:49:09 AM

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