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the SPECIALIST
Apprentice
Canada
81 Posts |
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BEatonNo1
Nobel Prize Winner
USA
1133 Posts |
 Posted - Jul 13 2003 : 2:30:31 PM
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I considered making a diving bell. The plan was to take an old barrel and cut some holes in it for view ports, then cover them with plexi glass. the thing was that I needed some pretty hefty weights to hold it down.
As for making a submarine, I would make it have a positive boyancy, you would have to stay moving to stay under water. That way if there was some horrible catastrophe, I would float up to the surface.
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Nerf Smurf
Mad Scientist
USA
390 Posts |
Posted - Jul 17 2003 : 6:47:45 PM
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BEatonNo1 you are talking about dynamic subs. They got many RC subs like that. Specialist you can have water proof motors pulling down and another one for thrust. if a failure go wrong the 2 motor pushing the sub will stop and so the sub floats back up. or have a emergency circuit breaker if the motors keep going down and cant stop
We have the gift to build what we want. |
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BEatonNo1
Nobel Prize Winner
USA
1133 Posts |
Posted - Jul 17 2003 : 9:07:38 PM
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well actually what I was thinking of was more like an upsidedown airplane...it has to keep moving forwards to stay under water or it will float to the surface
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Nerf Smurf
Mad Scientist
USA
390 Posts |
Posted - Jul 17 2003 : 10:29:58 PM
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Or you can build something like the 1 manned "Turtle"
We have the gift to build what we want. |
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BEatonNo1
Nobel Prize Winner
USA
1133 Posts |
Posted - Jul 17 2003 : 10:37:41 PM
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well i for one wouldnt sit in a wooden barrel painted with tar
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Nerf Smurf
Mad Scientist
USA
390 Posts |
Posted - Jul 17 2003 : 11:19:03 PM
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Specialist, Al you have to do is have large water tanks (Ballast Tanks) on the side of the sub. Fill those up with water by openings at the bottom of your tanks. Then have a aircompresser with its own compressed air to "Blow" the tanks. If somthing goes wrong just eject the tanks. With this type of sub you can "hover" but this is a harder design. Or you can have Thrust and dive motors. somthing go wrong turn them off or you can go along with BEatonNo1 with his dynamic sub idea. That type is one of the easies ones but you must move constantly unless you want to surface.
We have the gift to build what we want.
Edited by - Nerf Smurf on Jul 17 2003 11:38:19 PM |
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BEatonNo1
Nobel Prize Winner
USA
1133 Posts |
Posted - Jul 17 2003 : 11:34:48 PM
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well if you use ballast tanks then your sub has to be either heavyier that the water or have nutral boyancy. just because you have a barrel with water in it isnt going to make your sub go down...as for a compressor lowering the internal airpressure of the sub under water would cause it to crumple like a beer can. It would be easier to use a scuba tank for ballast air
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Nerf Smurf
Mad Scientist
USA
390 Posts |
Posted - Jul 17 2003 : 11:39:18 PM
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ok ok i had with the compessers own compressed air.
We have the gift to build what we want. |
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Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jul 18 2003 : 10:23:07 AM
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What happens when you run out of air from your tanks? SCUBA tanks would be what you would use, and they don't hold enough air to constantly surface and dive a sub...
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BEatonNo1
Nobel Prize Winner
USA
1133 Posts |
Posted - Jul 18 2003 : 1:59:40 PM
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you would have to carefully monitor it and either a have
A compressor onboard and refill on the surface or
B have a crew replace the tanks with fresh ones
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Nerf Smurf
Mad Scientist
USA
390 Posts |
Posted - Jul 19 2003 : 11:03:53 PM
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yea i go with letter A. That is what navy Subs do. The recompress there are by surfacing or raising a snorkel over the water to refill on air. But if the snokel is not made right the compresser can be sucking in water making the sub dive, Might be to a point where it wont come back up.
We have the gift to build what we want. |
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Chamkeeper
Mad Scientist
278 Posts |
Posted - Jul 29 2003 : 01:41:01 AM
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If you have any air in your tanks to release at the initial point of emergency, or any weight to drop, as you rise in the water column, you gain bouyancy. To simplify, if you can go up at all, you will continue....
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Kale
Nobel Prize Winner
Canada
795 Posts |
Posted - Jul 29 2003 : 09:03:22 AM
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I'd go with weights you can dump in a hurry. Sandbags with quick-release attachments to the hull, so you can drop the sandbags if you need to rise quickly in an emergency. For normal surfacing you could go with the compressed air idea.
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Topic |
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submarine
