Arecibo Radio Telescope - At risk of collapse? 2

[jhardy1]

With one "auxiliary" cable failing in August, and a second "primary" cable failing a week ago, there are concerns that the Arecibo radio telescope could be in danger of losing the main suspended antenna assembly. The observatory has been non-operational since August while the engineering investigations proceed.

https://physicsworld.com/a/second-cable-failure-puts-iconic-arecibo-observatory-at-risk-of-collapse/

http://julianh72.blogspot.com

 

[IRstuff]

There's already a thread on the original incident here: thread815-472890

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

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[waross]

Looking at the phoo in the other thread, the cable may not have been "broomed" properly before the socket was poured.

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[Phil1934]

collapsed about an hour ago

 

[thebard3]

A few images here

https://twitter.com/ruperto1023/status/1333791522269978626

Brad Waybright

The more you know, the more you know you don't know.

 

[hpaircraft]

This twitter thread links two videos of the collapse. One is drone footage directly at the tower where the final failure began.

https://twitter.com/DJSnM/status/13...ddIqk1ZNcEGTYNoEEf3G_yNtmzVDRjCFB7q-TzjF0rbwU

Edit add: Direct links to videos:

https://twitter.com/i/status/1334540065201012737

https://twitter.com/i/status/1334540305429909506

 

[JohnRBaker]

Amazing that they were flying a drone that close to the top of one of those towers at the instant that the cables started to fail. They were lucky that the drone wasn't take-out by flying debris.

John R. Baker, P.E. (ret)
EX-Product 'Evangelist'
Irvine, CA
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[dik]

I thought I had posted this... a good article on the dish...

https://thebulletin.org/2020/12/a-b...hange_HurricanesEarthquakesTelescope_12012020

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[sbisteel]

Video of the collapse can be seen here:

https://www.nsf.gov/news/special_reports/arecibo/

 

[Sym P. le]

The collapse in real time - [URL unfurl="true"]https://youtu.be/b3AASKr_iHc?t=53[/url]

 

[tommj]

frame by frame:

https://youtu.be/59WQIRvezzI?t=21