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Availbale Products, Material- and Service suppliers => Do It Yourself => Topic started by: dump on May 10, 2014, 09:24:31 AM
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Recently, I had the idea of making a very simple and reliable CE device , which also is a reactionless engine . The device is a rotating cylinder placed in a container with water. The cylinder has a radius slightly smaller than the radius of the semicircular bottom so between the bottom and the cylinder there is a gap of about 1 mm. Between the rotating cylinder and the sides of the container is sufficiently large distance . During rotation of the cylinder is formed around the boundary layer , wherein the pressure is less than atmospheric pressure. Pressure reduction due to the Bernoulli law . Under the container pressure is atmospheric. I.e greater than the gap. Due to this, and there is the thrust direction is indicated by an arrow . http://i62.fastpic.ru/big/2014/0508/90/9329fccad59f262c2807343572d01490.png (http://i62.fastpic.ru/big/2014/0508/90/9329fccad59f262c2807343572d01490.png) - an illustration of this device.
Summary , we have over-unity propulsion unsupported because the rotation of the cylinder energy consumed very little. Here are the calculations for a cylinder of radius 0.1 meters , 0.3 meters in length and speed of 20 per second : dynamic pressure in the boundary layer of the cylinder (1000 * (2 * 3.14 * 0.1 * 20) ^ 2) / 2 = 78876.8 Pa static pressure will be equal to the difference of atmospheric and dynamic : 101325-78876,8 = 22448.2 Pa then lift is equal to the product of the dynamic pressure on the cylinder diameter and its length (obviously without integration) : 78876.8 * 0.2 * 0.3 = 4732.608 Newtons , which is very good for a device with these dimensions . What do you think about this? Are the calculations right? Would you repeat this device ?