This page contains a series of experimental EHD thrusters, or air propulsion devices, that do not use conventional methods for thrust. They still obey the 'action=reaction' law of physics, but they do not need to carry their thrusting fuel. The simplest EHD thrusters, known as lifters, have an air ioniser in the form of a fine wire, fixed at a small distance (a few cm) above the collector, usually in the form of an aluminium plate of foil with smooth round edge at the upper part. The thrusting mechanism is called Electrohydrodynamic (EHD) and is provided by the well known Coulomb's law of electrostatics acting on ion clouds, and by the law of conservation of momentum, by which it transfers momentum of these accelerating clouds to neutral air molecules. As you can read in Lifters in vacuum, lifters are NOT antigravity or electrogravity devices. Unfortunately, the general lack of information on their mechanism has resulted in these deviced being claimed (and also sold!) as antigravity science kits.
These devices are able to lift their own weight, and even additional payload. The most basic lifter cell was developed by Transdimensional Technologies, and is composed of three similar elements joined so as to form a triangular unit cell assembly. A triangular structure is far from the optimum shape, but due to its simplicity it gives everyone the chance of trying out for himself the potential of this effect. Our aim is to find the best design and materials to construct the most powerful unit EHD cell in the smallest possible space. Please note that these devices use very high voltages (>30 KV), and experience in handling high voltage is a must. We are not responsible if you get killed!