Mon, 17 Jun 2002
The lifter is a neat little flying object. It is very simple in its construction and is powerd by a high voltage source. The basic lifter can look like this:
When the voltage is applied the lifter vill quickly start to hoover. When experimenting it can be a good idea to strap it with some thin nylon wires to avoid uncontrolled flight that can shortcircuit the lifter.
There has been much controversity about the inner workings of this device, but now most agree that it is due to the plasma around the thin wire that generates a thrust from the ionwind between the wire and the foil.
For more information see the lifter page.
To understand the forces behind the lifter we need to messure what it is that generates the thrust. I would like to messure the forces at the foil and the wire separately:
There is much room for experimenting here. The thin metal wire can be replaced by a plasma emitting device: One isolated wire and a second unisolated wire twisted together. Apply a 100Khz 1kV AC between these two. Then apply a DC voltage of 30kV between the plasma emitter and the aluminium foil:
This should probably enhance the upward thrust.