The Asymmetric Field concept has been in use for many years now. Thomas Townsend Brown discovered that an Asymmetric Capacitor would exhibit a horizontal force or displacement when subjected to a high voltage.
The cause of this displacement is widely believed to be an electrostatic imbalance or pressure.
Dr. Charles Buhler, working with NASA, has recently received a patent for a system using a similar arrangement of electrostatic surfaces for space craft propellantless propulsion.
There are many devices called "Lifters" which achieve lift through electrostatics.
The USA has, I believe, planes with electrostatic areas on the leading edge of the wings. These planes may have a very high performance enhancement. Possibly at a huge energy expense.
Alexey Chekurkov's Antigravity Device is a machine which uses electrostatics, rotating magnets, and various frequencies to achieve considerable lift.
In my view, all these devices create an asymmetrical electrostatic field around all or part of the structure. However this field may have been misinterpreted. It is more likely to be a copy of the underlying outward acting part of the field that we call our planetary magnetic field, or is a method of creating the underlying field. This field, which I call a Dynamic Gravitational Field,or DGF, is an outward acting force. This outward acting force is what is creating the asymmetry with the devices fields. The device must attempt to move to the center of its field. Hence the movement. The powerful planetary DGF is supplying the force required.
The asymmetrical capacitor's field would simply be enlarged toward one end horizontally, with symmetry vertically. The movement would be toward the enlarged end. It is possible that there would also be a vertical distortion caused by the Earth's outward field. This implies that these devices may also incur a small weight loss. I have never seen any indication that weight measurement has ever been a priority.
The lifters would be creating an asymmetry vertically, enlarged at the upper area. The lifter is restrained by connection to its power supply, but does hover.
All of these devices are very low performance compared to the power requirements.
Dr. Garry Nolan said on an interview with Ross Coulthart about UFOs, that the power required to "instantaneously accelerate" a 1 ton object from 50 feet to 14 miles high would take more energy than the total nuclear power output of the planet. Apparently this has been witnessed by reputable people and sensors. This is very rapid acceleration indeed.
https://www.youtube.com/watch?v=XR0JtbuLhPo about 18min 50sec in.
It may be that the power required for this feat is supplied by our planet. The only power requirement for the craft or device is the ability to create and manipulate a Dynamic Gravitational Field. As this is an outward acting field it could also be referred to as a Dynamic Anti Gravitational Field.
The words "instantaneously accelerate" are probably not a good choice. It is better to attempt to use G Force numbers. Instantaneous would be where something disappears and immediately reappears in an entirely different location. "Rapid acceleration" may be a better way to describe what has been observed.
Essential reading on how the Earth has an actual outward acting force can be found in a "
Study Of Gravity by Michael A Gamble. My interpretation of this field is somewhat more extensive than his Study.
Below is a diagram showing how a magnetic repelling effect can also be viewed as an attracting action.