Re: [PSUBS-MAILIST] PSUB Fatalities...View Ports...Shatterproof

["Paul Suds" <paul_suds@hotmail.com>]

Ok, obviously the engineering finite analysis calcs and the ball peen hammer 
example didn't quite sink in yet. I'm not being arrogant here, but maybe a 
little cocky :0  How does this sound, I can take my canopy, properly framed, 
and shoot an aerage .38 caliber or 9mm NATO round from 25 feet at it. After 
one round no hole, after two rounds no hole, maybe after three rounds in the 
same location, I may have some penetration. The glass laminates usually 
found in bullet proof glass  (Glass..polyurethane 
binder...polycarbonate...polyurethane binder...glass) , are somewhat 
stronger than pure polycarbonate, because they add thickness and absorb some 
of the shock associated with the projectile. The glass is usually added for 
scratch resistance, not impact resistance. If you want me to explain the 
absorption of energy by the crosslinking bonds, please ask. Creep resistance 
for 1/2 to 3/4 inch carbonate at 60 ft pressure is not a factor, unless the 
surface area is large and not properly framed. Again, I wouldn't want to be 
the pilot, I would prefer to be pulling the trigger. Finally, do your own 
testing before and after installation. I assume no liability for anything 
said here. You should test your own view port, but don't use a gun.. ;=)
Junior commander grade Suds (ex-tadpole)
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