source: www.sciforums.com (post: #8/8)It might be theoretically possible, but I don't think the sound barrier in water would be as significant. In air it was such a problem because the compression ahead of the aircraft made a "wall" of extra dense air. In water, the differences in density would be very small (water is essentially incompressible). Also, water is much more viscous than air, so it's likely not possible to reach the speed of sound due to all that friction.
This is an incredible clever trick, but it is "only" aimed at reducing the friction drag and thus achieving very high speeds by means of supercavitation (basically the effect you described). The body does not reach supersonic speeds (which would be around 1500 m/s in water).Nobody watches the science channels? They have been working on supersonic underwater missiles for some time using rocket engines and some type of nose cavitation device that generates some gas pocket effect at the nose and back over the skin of the underwater missile.
That makes sense, I just found that if I hold the HV cathode above water I can dimple the surface tension, so I thought maybe it was feasible to Electrically defuse the Molecules making it permeable or stretchy.My mostly uninformed hypothesis is that it would be impossible. It is possible in air because air is compressible. You can push through it faster than it can push through itself. But water is incompressible, so you could not possibly move the molecules out of the way faster than they can could naturally displace themselves, as in a sound wave.
Unless you were a subatomic particle which could actually travel in the space between the water molecules.
Thoughts?
The effect would be none, voltage with reference to what? Adding a charge to the entire body of water is a choice, but impossible in the open ocean.I've thought about this a couple times in my life. If you could charge the water around the object or missile with "Ultra High Voltage, High Frequency" at the very tip, creating like charges around the skin of the missile.
Like the skin effect on high voltage wire, the water would be repelled creating your pocket and therefor being viscous the "Super Charged air or water around the object it might act as a Magnetic / hydraulic pressure adding to stability and speed.
Sometimes I shouldn't be allowed to type, after drinking the night before
That's not true. To achieve supersonic speeds, the entire aircraft has to be redesigned. Just using a higher powered engine alone wouldn't do it.To make it supersonic just requires a higher powered rocket engine, just like in air...