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

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

Regarding view ports, I intend on having a 1/2 to 3/4 inch thick stress 
relieved polycarbonate canopy on my unit. I've run a few finite element 
calcs on this at my crush depth.  I've also worked with poly this thick 
before and I have no doubt that it will take a good 30lb wack with a ball 
pean hammer at 100 ft with no structural damage. Of course I'll be 
performing this test from the outside, just in case, and at less than 100 
ft. Now, if I can only find someone to pilot the thing while I beat on the 
outside canopy ... In all seriousness, overdesign + life = good; Underdesign 
+ accident = very bad. For a high speed sub, it goes without saying, that 
controlability will be a major design consideration. Pilot discipline is 
also very important as well.
Suds
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