Re: [PSUBS-MAILIST] Re: Psub for Lew

["David Shultz" <david_r_shultz@hotmail.com>]

. I didn't realize that at all.  Please explain.  If a "regular" sub could 
"sail" underwater,
>that would be a fascinating technique and quite the fuel-saver.
>
I don't know about underwater sailing. I thought up a way for a sub to glide 
underwater. The sub takes on water making it negetive bouyant so it sinks 
the planes act like wings that bite into the water and control the downward 
motion into a forward downward motion. Upon reaching the bottom of the glide 
water is pumped out making the sub bouyant and up she comes. The planes 
convert the upward motion into a forward upward motion until you reach the 
top of the glide. The cycle repeats only varying in the depth of the cycle 
and the angle of glide. If the sub can go deeper the cycle is longer due to 
more depth of fall thus maybe more speed. More like going down a steep hill 
or a gradual slope.

The prop can spin and recharge the batteries or generate power for 
operations. A small diesel motor could be used for surface maneuvering and a 
small electric motor for underwater maneuvering in shallow water.
It would give a greater range than diesel-electric alone.

I got the idea from the Germans in WW2 would be at periscope depth and go 
full ahead on electric motors up the planes and sail up to the surface. On 
the surface they would start the diesels and blow the water out of thier 
tanks with the diesel exhaust thus saving compressed air.
They did it by using power why can't you use gravity to pull the sub along.

I don't know if any body researched this but it might be something to look 
at.

David Shultz


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