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Lockheed's F-22 Raptor Gets Zapped by International Date Line
DailyTech LLC ^ | February 26, 2007 | Brandon Hill

Posted on 02/26/2007 2:47:19 PM PST by SubGeniusX

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To: Desron13

Tacoma-Narrows Bridge wasn't in CA.


61 posted on 02/26/2007 3:37:15 PM PST by ßuddaßudd (7 days - 7 ways Guero >>> with a floating, shifting, ever changing persona....)
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To: SubGeniusX
Wow.

Simply...

Wow.

62 posted on 02/26/2007 3:40:14 PM PST by Gritty (People long sheltered from mortal dangers can indulge themselves believing there are none-T. Sowell)
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To: RightWhale

Zulu time (and date) is the same on one side of the IDL as on the other. But if there is a feature to translate Zulu to local time, then you could have a problem.


63 posted on 02/26/2007 3:41:16 PM PST by Christopher Lincoln
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To: doorgunner69

Oh, yeah I know the GPS will know about the dateline, I just have a hard time believing that it would cause a system crash. It's not all that different than crossing a time zone, only in magnitude, and they would have done that several times already.

For that matter, there'd be no particular purpose in adjusting the time zone each time a boundary is crossed. The only relevant zones are the one you started in and the one you end up in. For the actual time tick, Zulu time is all that matters and it doesn't change. The only thing that changes is the zone, and that's normally only for display purposes.

I'm just not buyin' it yet.


64 posted on 02/26/2007 3:41:45 PM PST by Ramius ([sip])
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To: Ramius; DoorGunner
I agree with "doorgunner"....it was most likely a glitch in how the software handled the date change fed from the GPS navigation system.

Like someone else above - its is stunning that there isn't at least a rudimentary set of analog backups on the F-22. But then, your have to assume they would be useful by the new breed of pilots - I wonder if they have the training to fly anything but a computer controlled, glass cockpit rocket!!

Look'ie there Flash, that dial is round

65 posted on 02/26/2007 3:44:53 PM PST by HardStarboard (The Democrats are more afraid of American Victory than Defeat!)
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To: fremont_steve; bpjam

"Don't the varsity of the story, but it's certainly been told a number of times."

Did you mean, "Doubt the veracity...?"


66 posted on 02/26/2007 3:49:14 PM PST by Old Professer (The critic writes with rapier pen, dips it twice, and writes again.)
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To: Ramius; Cogadh na Sith
I'm just not buyin' it yet.

Please see post #44 ... does that sway you?
67 posted on 02/26/2007 3:50:20 PM PST by SubGeniusX ("BLAMMO! Eyes melt, skin explodes, everybody dead!")
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To: HardStarboard
its is stunning that there isn't at least a rudimentary set of analog backups on the F-22

It's been said a lot of older pilots had a deep mistrust for the new "fly-by-wire" systems of the F-16 and -18. You have to wonder what other "gotchas" might lurk in the code.

At least they still had flight control...........

68 posted on 02/26/2007 3:52:17 PM PST by doorgunner69
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To: SubGeniusX
I dont exactly work for Lockheed/Martin, but I am contracted out to one of their facilities.

They are scum.

69 posted on 02/26/2007 3:54:48 PM PST by lowbridge ("Of course Americans should vote Democrat" -Jihad Jaara, senior member, Al Aqsa Martyrs Brigade)
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To: SubGeniusX
scary .....

Yeah but some software test manager somewhere was relieved that the verification schedule was met.

70 posted on 02/26/2007 3:55:00 PM PST by fso301
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To: SubGeniusX
does that sway you?

Nope. :-)

71 posted on 02/26/2007 3:55:11 PM PST by Ramius ([sip])
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To: Ramius

Daily Tech LLC got the story from CNN, which broadcast it on Saturday (according to the transcript). That's not a great recommendation (IMO) but make of it what you can.


72 posted on 02/26/2007 3:57:02 PM PST by Christopher Lincoln
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To: BenLurkin

"The more they overtake the plumbing, the easier it is to stop up the drain."

Commander Montgomery "Scotty" Scott
USS Enterprise - "The Search for Spock"


73 posted on 02/26/2007 3:58:30 PM PST by pctech
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To: doorgunner69
>>>It's been said a lot of older pilots had a deep mistrust for the new "fly-by-wire" systems<<<

I'm not a pilot, but I have breakfast at a joint about twice a week with a founder of the Top Gun school at Miramar...a former F-4 naval aviator in Nam.

I'm confident he'll turn pale when I tell him this story.

My deep distrust of running computers without backup comes from starting in the computer business in 1962 with IBM and, after 11 years there, competing with them in the computer business for another 18.

I also have coffee with a 80 year old former NW pilot...he might have a heart attack if I tell him!!!

74 posted on 02/26/2007 4:07:09 PM PST by HardStarboard (The Democrats are more afraid of American Victory than Defeat!)
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To: Ramius
THe flight did return for a software glitch, so if the dateline was not the cause, there was still something serious enough that it affected all of the F-22s in the flight. And at the same time............
75 posted on 02/26/2007 4:09:00 PM PST by doorgunner69
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To: Ramius

Computers don't quite work that way. If you're not careful, an error in even an unimportant part of the program can crash the whole system.


76 posted on 02/26/2007 4:10:07 PM PST by Christopher Lincoln
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To: supercat
Did anyone in Congress even think about any such issues!?

Congress?
Think?

Surely you must have some other Congress in mind.
77 posted on 02/26/2007 4:10:49 PM PST by macmedic892 (I am serious. And don't call me Shirley.)
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To: HardStarboard

I would LOVE for you to follow up with his reaction and insight after your next breakfast ....

would that be possible?


78 posted on 02/26/2007 4:12:53 PM PST by SubGeniusX ("BLAMMO! Eyes melt, skin explodes, everybody dead!")
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To: adorno
pure old reliable Windows....

Kinda like dry water..... heard about it. Never seen it. (mepis linux and loving it)

79 posted on 02/26/2007 4:17:36 PM PST by DreamsofPolycarp (Ron Paul in '08)
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To: SubGeniusX
I spoke to a F-22 pilot at Langley last summer.

The computers fail, and they call it "ALT+CNTRL+DEL".

Also, awhile back an F-22 pilot was trapped in the cockpit on a hot summer day. The canopy would not open and they had to literally cut him out of this $339 Million Dollar aircraft.


80 posted on 02/26/2007 4:17:46 PM PST by SkyPilot
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