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Hey Andy, I had not seen some of the data on that site, thanks. The little animation is cool. Brian has mentioned FLIP a couple of times, and it is shown on his web site. Brian's sub is configured to be able to exit when vertical and at the surface thru a stern hatch, which should be a nice feature for egress and other things. My hydrobatic sub doesn't have a hatch at the bow or stern for such a configuration, and with my sponsons at the end of the wings I should have a pretty stable egress platform. After making a couple of crude models of the pressure hull of my Batic THUWG, I realized I was not going to be able to make if go completely vertical when fully submerged in the configuration I had worked up to that point. Having three pressure hulls, one in the bow for the pilot, one in the stern for the co-pilot, and one in between with the movable battery bank, made it so I had to much buoyancy at the bow and stern to allow the movable battery bank to move far enough to counter act that buoyancy without some additional help. Here is the original drawing. http://www.flickr.com/photos/12242379@N05/3202199015/sizes/l/ And the last hull configuration can be seen here. http://www.flickr.com/photos/12242379@N05/3203047420/sizes/o/ http://www.flickr.com/photos/12242379@N05/3203047314/sizes/o/ Regards, Szybowski > Subject: RE: [PSUBS-MAILIST] Concrete Sub Hybrid > Date: Thu, 29 Jan 2009 18:54:17 -0500 > From: Andy.Goldstein@videoray.com > To: personal_submersibles@psubs.org > > > Brent, > > Not a sub, but FLIP goes vertical. Always seemed weird intentionally flooding > most of one's boat. But it is pretty cool. It's stable in the vertical position as well, which is kinda the point. No propulsion though. > > http://sio.ucsd.edu/voyager/flip/index.html > > -a > > -----Original Message----- > From: owner-personal_submersibles@psubs.org on behalf of Brent Hartwig > Sent: Thu 1/29/2009 6:44 PM > To: PSUBSorg > Subject: [PSUBS-MAILIST] Concrete Sub Hybrid > > > > > Hi Brian, > > I can understand the confusion since I just recently figured that one out. ;)' I didn't ask about it, since I figured you had explained it in the list at one point, and I planned on going back and seeing what you had said. > > I think I might of finally figured out a way to make my Batic THUWG go vertical either nose up or nose down when fully submerged. But I think I might just add that feature on the second one (if it gets built) to keep things simple(er). Why you ask would I want to make the sub go vertical when submerged. Well because it's fun would be the shortest answer. What's good for a reed fish is good for me. Dancing with whales will be a blast. > > Regards, > Szybowski > > > > > From: ojaivalleybeefarm@dslextreme.com > To: personal_submersibles@psubs.org > Subject: RE: [PSUBS-MAILIST] Side Thruster Removal on K-250 #118 > Date: Thu, 29 Jan 2009 07:50:21 -0800 > > > > > > > > > Frank, Technically my sub is not really a > concrete sub, it's a hybrid. Only the main ballast, which is for surface > transit, is made out of concrete (ferro-cement). The rest will be > steel. > > Brian > > -----Original Message----- > From: > owner-personal_submersibles@psubs.org > [mailto:owner-personal_submersibles@psubs.org]On Behalf Of > ShellyDalg@aol.com > Sent: Wednesday, January 28, 2009 8:06 > AM > To: personal_submersibles@psubs.org > Subject: Re: > [PSUBS-MAILIST] Side Thruster Removal on K-250 #118 > > > Hi Brent. Your sub was built a long time ago, and I'm sure the available > paints have gotten better since then. The grey paint is probably a zinc rich > coating if it's still in good shape after all these years. I have some paint > called "zincalate" that we used all the time when I was working and it lasts > many years. I have a friend who used it on a small metal ladder for his live > aboard sail boat, and it was still good after 5 years, submerged in salt water > for long periods. It's not cheap, but works. Will you be doing your own > sand blasting? I'm not at that stage yet, but will probably rent a blaster > when the time comes. Brian from Ojai may want to get together with us > when you visit. He's building a concrete sub. Frank > D. > > > A Good Credit Score is 700 or Above. See > yours in just 2 easy steps! > > |