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Good Engineering Includes Many SPOF

Posted: Sun Dec 17, 2017 9:09 pm
by Colonel
http://www.foxnews.com/travel/2017/12/1 ... onium.html


Or is this garbage because it's from Fox News?

Re: Good Engineering Includes Many SPOF

Posted: Sun Dec 17, 2017 10:51 pm
by John Swallow
"This has been very bizarre," Olivia Dorfman said, calling the situation "unbelievable," before adding: "No one seems to know what they're doing."

Nothing like getting the real skinny from somebody passing through the terminal...  (;>0)


Re: Good Engineering Includes Many SPOF

Posted: Tue Dec 19, 2017 5:12 am
by Eric Janson
Sounds like a real mess....


Some serious questions need to be asked about how a single event can take out both normal and backup power systems. This sort of thing is supposed to be looked at in the design/planning stage.

Re: Good Engineering Includes Many SPOF

Posted: Tue Dec 19, 2017 7:44 am
by Colonel
[url=https://en.wikipedia.org/wiki/Single_point_of_failure]https://en.wikipedia.org/wiki/Single_point_of_failure[/url]

[quote]The assessment of a potential SPOF involves identifying the critical components of a complex system that would provoke a total systems failure in case of malfunction.

Highly reliable systems should not rely on any such individual component.[/quote]

Duh.

Re: Good Engineering Includes Many SPOF

Posted: Tue Dec 19, 2017 7:07 pm
by David MacRay
What would an old man like me who likes paper tickets know about keeping the lights on with back up generators?

Funny how the power would fail more often in the 1900s, but my mom could light a candle and use the telephone.

Re: Good Engineering Includes Many SPOF

Posted: Tue Dec 19, 2017 10:32 pm
by Colonel
A few years back this happened at the ORD Tracon
and none of the emergency generators would start.

Re: Good Engineering Includes Many SPOF

Posted: Wed Dec 20, 2017 2:11 am
by vanNostrum


[size=4]This would start every time and provides 1.3MW[/size] >:D




[img alt=Image result for a380 apu]https://fcache1.pakwheels.com/original/ ... 98993a.jpg[/img]

Re: Good Engineering Includes Many SPOF

Posted: Wed Dec 20, 2017 3:37 am
by Colonel





Re: Good Engineering Includes Many SPOF

Posted: Wed Dec 20, 2017 5:33 am
by Nark1
I've seen a few APU fail to start, or auto shutdown.

MEh.


As for a Single point of failure ... point....  I can't help but think of the "jesus nut" on the Bell 206.  1 nut holding the rotor on.

1, one..... un  eine.

1.


Re: Good Engineering Includes Many SPOF

Posted: Wed Dec 20, 2017 4:54 pm
by Gravel Digger
[quote author=vanNostrum link=topic=7646.msg21230#msg21230 date=1513735904]


[size=1.45em]This would start every time and provides 1.3MW[/size] >:D




[img alt=Image result for a380 apu]https://fcache1.pakwheels.com/original/ ... 98993a.jpg[/img]
[/quote]


Unless there's ice on the inlets, then mine refuses to boot.