What is Anti Gravity Propulsion? Well basically it is a method of propulsion which creates lift for an object. Usually to be considered anti gravity propulsion we usually look for a method of propulsion which is very powerful and that doesn't use gas, oil, or fossil fuels.
One of the best examples of anti gravity propulsion is Viktor Schauberger's inventions. Take for example The Repulsin.
The Repulsin creates 2 effects, here they are:
The Coanda Effect: a pure Aerodynamic effect based on the Bernoulli's principle.
The high speed vortex in the "vortex chamber" produces an electric, charged separation effect, called "the diamagnetic effect " by Schauberger. These two effects, combined, create the so-called "implosion effect".
What happens when The Repulsin is activated is that it is lifted up into the air with tremendous power. None of the power used in the Repulsin requires batteries, electricity, or fossil fuels or rocket boosters of any kind.
When the main electric engine is started, the Coanda effect begins to create a differential aerodynamic pressure between the outer and the inner surface of the primary hull. At a higher speed, the vortex chamber becomes a kind of high electrostatic generator due to the air particles, in high speed motion, acting as an electrical charge transporter. The Repulsine will begin to glow due to the strong ionization effect of the air. Now, we have all the ingredients for a continuous and strong Aether Flow along the main axis from the top to the bottom of the craft...The radial air pressure required for lifting 1kg with the Coanda Effect is about 1,4 kg/cm2
Viktor knew the power of vortex's and how to use them to generate power. He ionized the air in the machine and this created lift. Here is a picture of a flying disc the American Army built using his technology. The Army stopped using his technology saying it was not worthy of being further tested. Why they said that nobody knows. As far as many people can see this was an amazing technology that should not have been abandoned.
Here is a picture of one of the crafts that was built by the Nazi's using his technology.