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I am currently testing a 7 ft. dynamic diving Nautilus. Having lost this sub twice I'm very concerned about losing it again and consequently developed a very simple self surfacing mechanism and I wanted to know if anyone else has heard of this type of system. It's very simple it seems to work but without actually seeing the sub underwater it's hard to tell.
Here's what it does -- -- motionless at the surface the sub sits level. As forward thrust is applied and as the nose is directed down the sub submerges. The sub is now underwater pointing towards the bottom at a slight angle. I'm guessing that the sub is about 15 ft. underwater. Now only forward thrust is on. The sub is traveling underwater and the sub automatically levels out but the tail end now drops. This means that the nose is now pointing up. The sub probably travels 50 ft. underwater but now since the nose is pointing up it breaches to the surface. And maintains a level position again on the surface.
Here's how it (theory) works. In the tail section there is a rubber bladder. It's the size of a small football and it's only holding air at atmospheric pressure. At the surface the amount of buoyancy provided by the air bladder holds the tail end up such that the sub sits in a perfectly horizontal position. In other words the sub is balanced with foam, weights, etc. and the air bladder. Now if I were to take the sub down to 10 ft. (vertically displace using scuba gear) I should observe that the sub is now pointing up slightly. If I take it down 20 ft. it should be pointing up at an even greater angle. This occurs because the water pressure compresses the air bladder consequently making the tail end of the sub heavier thus changing the inclination of the sub to point up. If forward thrust has been applied you can see that since the sub is pointing up it is forced to the surface and breaches. I should mention though that even without forward thrust the sub would float to the surface anyway but at least this method (I think) keeps me from running the nose into the mud at the bottom in about 30 ft. of water. I did do this onetime and the sub was buried into the mud at least 3 ft. it was a real effort to pull it out.
Since I have not been able to actually see the sub underwater and have only seen the result I am guessing that my simple device is working. But I just don't know.
I have since removed the bladder because I did want the sub to travel underwater and only to surface when I wanted it to and not when it wanted to. I just have to be careful about not running the nose into the bottom mud.
But I was wondering if anyone else has ever come across this concept?
Edited By Carcharadon on 1077626151
Here's what it does -- -- motionless at the surface the sub sits level. As forward thrust is applied and as the nose is directed down the sub submerges. The sub is now underwater pointing towards the bottom at a slight angle. I'm guessing that the sub is about 15 ft. underwater. Now only forward thrust is on. The sub is traveling underwater and the sub automatically levels out but the tail end now drops. This means that the nose is now pointing up. The sub probably travels 50 ft. underwater but now since the nose is pointing up it breaches to the surface. And maintains a level position again on the surface.
Here's how it (theory) works. In the tail section there is a rubber bladder. It's the size of a small football and it's only holding air at atmospheric pressure. At the surface the amount of buoyancy provided by the air bladder holds the tail end up such that the sub sits in a perfectly horizontal position. In other words the sub is balanced with foam, weights, etc. and the air bladder. Now if I were to take the sub down to 10 ft. (vertically displace using scuba gear) I should observe that the sub is now pointing up slightly. If I take it down 20 ft. it should be pointing up at an even greater angle. This occurs because the water pressure compresses the air bladder consequently making the tail end of the sub heavier thus changing the inclination of the sub to point up. If forward thrust has been applied you can see that since the sub is pointing up it is forced to the surface and breaches. I should mention though that even without forward thrust the sub would float to the surface anyway but at least this method (I think) keeps me from running the nose into the mud at the bottom in about 30 ft. of water. I did do this onetime and the sub was buried into the mud at least 3 ft. it was a real effort to pull it out.
Since I have not been able to actually see the sub underwater and have only seen the result I am guessing that my simple device is working. But I just don't know.
I have since removed the bladder because I did want the sub to travel underwater and only to surface when I wanted it to and not when it wanted to. I just have to be careful about not running the nose into the bottom mud.
But I was wondering if anyone else has ever come across this concept?
Edited By Carcharadon on 1077626151
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