Anti-gravity technology is possible. Ancient egyptian pyramids couldn't be built without it. Just forget about what You were taught at school in physics classes. Clear Your mind and imagine that You are looking here at understandable but another, before unrevealed, knowledge.
The knowledge about possibilities of getting various effects by manipulating with Time in technological devices is still unrevealed and hidden, but it is not impossible to understand some basic principles. Just believe that You can and step into the next level of human evolution.
Here is the Device that makes anti-gravity levitation Effect possible. Metal sphere, that rotates simultaneously on two axis. Why does it make an anti-gravity effect? If the Sphere rotates on two axis simultaneously, than it means that inside the Sphere there are two simultaneous Time processes going on. One is primary and one is secondary Time. This Secondary Time will make the anti-gravity effect, because our Space Time Reality has only one Time dimension. The Secondary Time will be outside of it - that will cause the sphere to free float in the air. The anti-gravity effect appears, because Time in downwards direction disappears. On rotating sphere this Time is Secondary (secondary rotation) and thus can not exist in our Space Time.
In case of an angle on Primary axis there will be spacetime deformation inside the sphere, which will tend to get normal (planar) state. The effect will be sphere’s movement on secondary axis up or down and speed of the movement will depend on the angle of primary axis.
There is also a possibility that the device explodes in certain circumstances. I will not talk about why it can happen now. The next picture shows how the device should not be tested. This illustrated configuration has a higher probability of explosion.
This is almost not science fiction any more. Given that Secondary Time Sphere's principle is working, this goal is very close future. In the picture below you can see schematics of how an Anti-Gravity aircraft could look like. There are two Sphere devices - one for altitude and the other for steering the aircraft.