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Re: [PSUBS-MAILIST] Fiberglass submersibles inquiry
Solomon,
To be even more precise,
.445 psi per foot of saltwater
.433 psi per foot of freshwater
or just a rough rule of thumb to make quick calculations: 1/2 psi (.500) for
every foot of saltwater.
If you are planning on going much further with a sub project take Ray's
advice and attend a basic scuba class. It will be money well spent.
Dan Lance
> From: Ray Keefer <psubs2001@yahoo.com>
> Reply-To: personal_submersibles@psubs.org
> Date: Thu, 12 May 2005 18:03:07 -0700 (PDT)
> To: personal_submersibles@psubs.org
> Subject: Re: [PSUBS-MAILIST] Fiberglass submersibles inquiry
>
> Hi Solomon,
>
> Water pressure in salt water at sea level is:
>
> 0fsw (feet deep salt water): 1 atm
> 33fsw: 2 atm
> 66fsw: 3 atm
> 99fsw: 4 atm
> and so on
>
> 1 atm is 14.7psi (pounds per square inch)
>
> A good scuba class will cover these basics.
>
> Regards,
> Ray
>
> --- solomon D <solomondees@yahoo.com> wrote:
>> I know that laminate hulls for submersibles are not
>> a
>> good idea. I have always liked the bionic dolphin
>> project though and I was wondering what the max
>> depth
>> it can safely reach is? They list something like 10
>> feet on innespace's website. I wanted to get other
>> peoples opinions on the subject however. The hull is
>> laminated fiberglass and carbon fiber I am not sure
>> about the reinforcing structure, it has a 3/4" thick
>> F16 acrylic canopy.The bionic dolphin is very
>> positively bouyant and uses horse power to shove it
>> underwater.So how deep do you think it would dive
>> before the canopy or something else gave way?
>> Supposing that the engine could run for an extended
>> period underwater (which obviousily it cant).I am a
>> complete newbie at this sub stuff so please forgive
>> my
>> ignorance. I also wanted to find out what kind of
>> pressure water exerts on the hull at a depths of
>> 10,20,30,50 feet etc. I cant seem to find a website
>> to
>> explain it thourghly. Do not worry I am not planning
>> on building anything to kill myself in ;I would just
>> like to educate myself on this subject.
>>
>>
>>
>>
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