Self-locking F-22?

gkainz

Final Approach
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Greg Kainz
Got this via email from a long string of forwards, so I have no idea if it's legit or not. If true, they've got problems!

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Lockheed's Flying Dud

The Self-Locking F-22

By ROBERT BRYCE

Last week, Lockheed Martin announced that its profits were up a
hefty 60 percent in the first quarter. The company earned $591
million in profit on revenues of $9.2 billion.
Now, if the company could just figure out how to put a door handle on
its new $361 million F-22 fighter, its prospects would really
soar.


On April 10, at Langley Air Force Base, an F-22
pilot, Capt. Brad Spears, was locked inside the cockpit of his
aircraft for five hours. No one in the U.S. Air Force or from
Lockheed Martin could figure out how to open the aircraft's canopy. At
about 1:15 pm, chainsaw-wielding firefighters from the 1st
Fighter Wing finally extracted Spears after they cut through the
F-22's three-quarter inch-thick polycarbonate canopy.

Total damage to the airplane, according to
sources inside the Pentagon: $1.28 million.
Not only did the firefighters ruin the canopy, which cost $286,000,
they also scuffed the coating on the airplane's
skin which will cost about $1 million to replace.





The Pentagon currently plans to buy 181 copies of
the F-22 from Lockheed Martin, the world's biggest weapons
vendor. The total price tag: $65.4 billion.

The incident at Langley has many Pentagon
watchers shaking their heads. Tom Christie, the former director of testing and
evaluation for the DOD, calls the F-22 incident at Langley "incredible."
"God knows what'll happen next," said Christie, who points out that the F-22 has
about two million lines of code in its software system. "This thing
is so software intensive. You can't check out every line of code."

Now, just for the sake of comparison, Windows XP, one of the
most common computer operating systems, contains about
45 million lines of code. But if any of that code fails, then the
computer that's running it simply stops working. It won't cause
that computer to fall out of the sky. If any of the F-22's two
million lines of computer code go bad, then the pilot can die, or,
perhaps, just get trapped in the cockpit.

One analyst inside the Pentagon who has followed
the F-22 for years said that "Everyone's incredulous. They're asking
can this really have happened?" As for Lockheed Martin, the
source said, "Whatever the problem was, the people who built it should
know how to open thecanopy."

Given that the U.S. military is Lockheed Martin's
biggest client, perhaps the company could provide the Air Force
with a supply of slim jims or coat hangars, just in case another
F-22 pilot gets stuck at the controls.

As if the latest canopy shenanigans weren't bad
enough, on May 1, Defense News reported that there are serious
structural problems with the F-22. Seems the titanium hull of the aircraft isn't
meshing as well as it should. Naturally, taxpayers have to foot the bill for
the mistake (improper heat-treating of the titanium) which is found on
90 aircraft.

The cost of repairing those wrinkles? Another $1billion or so.

Lockheed Martin's F-22 spokesman, Joe Quimby, did not return
telephone calls.
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And as a side note, after 25 years of service the Af is retiring the F-117, which the F-22 is to replace. The AF did not say when exactly the stealthy Nighthawk is to quit flying.

Tell me again how much we paid per copy?
 
I am the F-22. You will be assimilated. But you'll enjoy every minute.
 
Maybe he should have just ejected. I'm pretty sure it has zero-zero ejection seats, and that'll be a fully mechanical system. Of course, you'd expect the canopy to fully mechanical too.

Chris
 
I'm not too sure about the notion that this is a software bug, I thought I read the cause was suspected to be a jammed actuator. Still seems like there ought to be a backup manual release, I'll bet they'll be retrofitting one soon. And the idea that a line of code could "go bad" or that any error in the software could crash the jet is a bit ludicrous (and typical of media reporting).
 
The coordinator for the Warbirds in Review aircraft displays during Airventure is a L-M senior engineer on the F-22 program.

His version of events was that the jammed canopy was the unfortunate result of an adverse stack up of dimensional tolerances on the moving and non-moving surfaces of the canopy latch mechanism on this particular airframe. Obviously an engineering oversight that wasn't recognized until after this event. The reason they decided to cut the polycarbonate canopy vice blowing the canopy assembly was to preserve the configuration for a complete analysis. Also, blowing a canopy has its own inherent risks.

As a side note, it was described to me at Sun 'n Fun last April, where there were 2 -22's on display, that there are no fresh air vents on the F-22 which is necessary to ensure stealthiness of the plane's exterior. The pilot is on the O2 bottle from engine startup to shutdown. I witnessed the ground crew re-filling the system every morning, clad in face shields, and rubber gloves and aprons.
 
You would think that, with such a price tag, it would come with remote unlock via the keychain! Guess they'll have to get one of those magnet deals and stick it on the underside of the wing or something.

Seriously, though, wouldn't there be a hydraulic hose that actuates the 'locking' ram that would be much easier to replace than the heavy-duty plexi-glass canopy? Or was the ram itself locked into place? In that case, it still seems like there would be a way to release pressure on the ram. Of course, I'm sure they thought of all of this beforehand, but it's still fun to play Monda... errr.. Thursday afternoon quarterback.

-Chris
 
CJones said:
You would think that, with such a price tag, it would come with remote unlock via the keychain! Guess they'll have to get one of those magnet deals and stick it on the underside of the wing or something.

Seriously, though, wouldn't there be a hydraulic hose that actuates the 'locking' ram that would be much easier to replace than the heavy-duty plexi-glass canopy? Or was the ram itself locked into place? In that case, it still seems like there would be a way to release pressure on the ram. Of course, I'm sure they thought of all of this beforehand, but it's still fun to play Monda... errr.. Thursday afternoon quarterback.

-Chris
I'd be willing to bet that most of the several hours the pilot was "trapped" in the cockpit were spent (by the experts) in a serious attempt to find a way to open the canopy without destroying it.
 
CJones said:
You would think that, with such a price tag, it would come with remote unlock via the keychain! Guess they'll have to get one of those magnet deals and stick it on the underside of the wing or something.

Can't they just call USAF-AAA and get a slimjim out there??
 
Let'sgoflying! said:
Can't they just call USAF-AAA and get a slimjim out there??

Maybe next year they'll come with OnStar.
 
lancefisher said:
Maybe next year they'll come with OnStar.

I'm thinking more along the lines of the chainsaw case behind the hinged flat screen instrument panel option.
 
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