By spraying bubble onto the side & bottom of a ship's hull friction can reduced by large amount.
Пікірлер: 22
@johnwang99145 жыл бұрын
Would require the hull surface to be etched to hold the air bubbles in order to provide the hydrophobic properties and fouling would disrupt this behaviour rather quickly. You might have a better chance at using ultrasound to encourage hydrophobic properties retention.
@vis5 жыл бұрын
Water density goes down, then ship will sunk. Or your ship loading capasity need ro reduce
@Mylife-ws5rc5 жыл бұрын
I dont think so.
@Savvas.955 жыл бұрын
:(
@JanChacn5 жыл бұрын
Can you explain why density water goes down?
@guillaumeraymond93215 жыл бұрын
Jan C Chacin L The water density does not go down, correctly speaking. Let us take a volume of 1m3. If this volume is full of water, the mean density will be rho= 1000kg/m3. Now, if the volume contains 50% of air, the mean density will be the average : rho= 1000 (water density)*0,5 + 1,2 (air density)*0,5= 500 kg/m3 Let us calculate the archimedes force :F=rho*g*V (volume of the hull in the water) You see, this force is proportionnal to the density. Hence, if air is injected rho is going to diminish and so does archimedes force. This means that the force exerted by the water onto the boat will be smaller and the boat is going to be further in the water. However, if you take a look at the drag force : F drag = a coefficient*rho*V^2*S. The drag force is also a function of the density. Therefor, by lowering the density, you can reduce the drag force and move faster. So, on one hand you increase the speed, but on the other hand the boat sinks a bit. Sorry for the grammar but my french phone kept correcting
@JanChacn5 жыл бұрын
@@guillaumeraymond9321 amazing explanation, thank you my friend
@kosta86655 жыл бұрын
Visibility from the bridge is zero!
@boraylmaz97635 жыл бұрын
😂😂😂😂
@kham123965 жыл бұрын
This is one mad idea
@ghostmost26145 жыл бұрын
American submariners were doing this in world war 2 to gain more speed
@mohammedishaq39165 жыл бұрын
Looks like a good idea.. Can lower the engine output and instead use these pumps.. But won't it lower the buoyancy in the srounding water
@92fsoakcreek5 жыл бұрын
No. Bubbles only blow up.
@kent-havardjohansen22315 жыл бұрын
With air bubbles against the ships hull, cavitation and corrosion occur. In other words, a bad idea.
@danemiljus54855 жыл бұрын
And not salt wather.
@allenjayeran65975 жыл бұрын
Propeler eats bubles low propultion
@Abdurahman5945 жыл бұрын
А что это было то?.....
@user-eq2gw7qx9k5 жыл бұрын
What game is this
@stebarg2 жыл бұрын
Bullshit. Air does not travel downwards in water.
@kustomweb6 жыл бұрын
Yo, Nipun, how about some commentary , you can do better