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#11
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Pilot locked in F22
On 29-Apr-2007, TheSmokingGnu wrote: The canopy is held onto the aircraft by those explosive bolts. If those don't remove the canopy's incentive to remain attached, there's not much you can do about it. As a bonus, however, the seatback will punch through the canopy first, and you're wearing that fancy helmet. Worth a shot, at least! :P TheSmokingGnu I can't speak for the F-22, but I can tell you with the F-4 Phantom, if the canopy didn't jettison, you couldn't eject. There was no such thing as ejecting through the canopy. And an F-4s canopy wouldn't have jettisoned if had been stuck closed as it was on that F-22. That's why they had a great big knife on each canopy's left rail, to cut your way out if you had to. With the F-4 (and the F-15) the canopy is jettisoned by shooting unregulated compressed air into the pneumatic actuator normally used to open and close the canopy. The canopy would open so fast with the unregulated air that it would snap off the hinges at the rear. There were NO explosive bolts involved. If the canopy was already open, you couldn't eject either, as the canopy jettison system couldn't work. As I said, I don't know what kind of system the F-22 uses, so the above might not be pertinent. But I do know ejecting has plenty of potential injuries and hazards. I think they did the right thing by exhausting all other avenues, then cutting the pilot out. Scott Wilson Phormer Phantom comm-nav avionics tech F-4C 1980-82, F-4E 1982-86 |
#12
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Pilot locked in F22
Vaughn Simon wrote:
"TheSmokingGnu" wrote in message ... 601XL Builder wrote: At that point, why not have some fun and try out the ejection seat? And if you pull the ejection lever and the canopy STILL stays stubbornly attached? What then? Vaughn Vaughn, Please watch your attributions. There is nothing in the above that I wrote except the subject line? |
#13
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Pilot locked in F22
I would be willing to bet if $50,000 were offered to all involved
(engineers and mechanics) for the first person to figure out how to get the pilot out, with out damaging the plane, they would still have an intact canopy and saved $132,200 601XL Builder wrote: For what a F22 costs you'd think they'd throw in an extra set of keys. http://www.spaceref.com/news/viewsr.html?pid=20396 How much crap do you think this guy had to deal with in the ready room? -- Chris W KE5GIX "Protect your digital freedom and privacy, eliminate DRM, learn more at http://www.defectivebydesign.org/what_is_drm" Gift Giving Made Easy Get the gifts you want & give the gifts they want One stop wish list for any gift, from anywhere, for any occasion! http://thewishzone.com |
#14
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Pilot locked in F22
On Sat, 28 Apr 2007 19:36:45 -0500, 601XL Builder
wrDOTgiacona@suddenlinkDOTnet wrote in : For what a F22 costs you'd think they'd throw in an extra set of keys. http://www.spaceref.com/news/viewsr.html?pid=20396 Canopy replacement cost is $182,205 The question is, did LocMart reimburse the USAF for the new replacement canopy, cost of canopy replacement, emergency personnel, five hours of pilot time, trouble-shooting of the aircraft, and aircraft time lost from service? Or did the tax payers end up paying for LocMart's obviously defective hardware/software/design? I found this quote interesting: The aircraft subsequently ground aborted. If the aircraft has demonstrated its ability to malfunction, I'm not sure I'd be comfortable with it making any decisions at all if I were PIC. What if it decided to open the canopy at mach 2 for instance. "Open the pod-bay doors, Dave...." |
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