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Vance, Would a regular bilge have enough power to overcome the outside sea pressure? Do you need a special type of pump? Is this soft tank pumped at specific depths? David Bartsch To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] tanks Date: Tue, 6 Jan 2009 05:43:58 -0500 From: vbra676539@aol.com You pump overboard. Vance -----Original Message----- From: David Bartsch <dbartsch2236@hotmail.com> To: personal_submersibles@psubs.org Sent: Tue, 6 Jan 2009 3:44 am Subject: [PSUBS-MAILIST] tanks
Frank has me thinking again...
Lets see if I understand this as I should... The hard ballast tank is a tank outside of the pressure hull that is subjected to the forces of the outside ambient pressure. To surface, one blasts air into this tank with the vent valves closed. This forces the water down and out thru ballast tank vents allowing the sub to become more bouyant and it bobs to the surface... Soft tanks are such as buckets within the sub subjected but to cabin pressure and are used to fine tune the bouyancy and for trim adjustments. Water is pumped from one tank to another (If more than one is available) to control trim angle. How does one remove this water from these soft tanks on a small psub? &nb sp; David Bartsch Send e-mail faster without improving your typing skills. Get your Hotmail® account. = Life on your PC is safer, easier, and more enjoyable with Windows Vista®. See how |