im looking to build something that periodically becomes submerged but pops back to the surface seemingly of its own accord. i want it enclosed in an area probably the size of a shoe box. does anybody have any suggestions?
2007-12-07 11:14:32 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
also i want to power it off of a battery and as the water is pumped out i want it to propel the object
2007-12-07 11:39:25 · update #1
it has to stay partially above water and also has to be visible it will be anchored but i want it to move around as i said before
2007-12-07 16:01:57 · update #2
You didn't state whether the invention has to operate with true invisibility - so in a tank of dyed water (food colouring) make a floating submarine with a small motorized anchor on a timer.
The motorized anchor can alter the submarine's state at it's own time interval and the darkened water can disguise the presence of the anchor mechanism.
Otherwise you are going to have to confine your timed, motorized mechanism to something internal to the submarine, something which will change the volume of any internal "bladder" mechanism which can inflate and deflate with varying volumes of water as ballast to alternately sink or float the submarine.
2007-12-07 12:04:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Submarines are large versions of this. A pump and a ballast tank could be made to do this, but you'd have to provide power and some sort of control. I've seen research projects that used this technique for submerged buoys that gather data, then pop to the surface to radio results in via satellite.
2007-12-07 19:27:01 · answer #2 · answered by VirtualSound 5 · 1⤊ 0⤋