The PFT Motor mk2
The PoyntingFlowThrusterproject
By Jean-Louis Naudin
created on September 11th, 1999 - JLNLabs - Last update September 20th, 1999

ThePFT Motor mk2 uses two asymmetrical capacitors for generating a continuous rotation of the rotor at high speed. The rotor is composed of a dielectric ( a commonplastic ) cylinder with an aluminum sheet fixed in the innersurface, this is the rotating armature of the cylinder capacitor.Two aluminum cylinders ( length: 115mm, diam.: 65mm ) have been used as the fixed armature of the capacitor. The measured capacitance is about 14pF. One aluminum cylinder has been connected to +28kV DC and the other to the ground (OV).

With the rotor blocked, the leakage current was only 1uA, so the coronna effect was insignificant and this shows clearly that this motor is not a coronna motor. Some other tests have been done for checking if the E-Field induction effect is the source of the high speed rotation ( see : Induction effect testing). The tests has showed that the high speed rotation wasn't generated by the E-Field induction effect.

The PFTMotor mk2 turns at high speed : 2770 RPM with only 99uA. ThePFT Motor mk2 has no brushes and it can run for a long time.

The PFT Motor mk2 concept will be soon used in anew PFT spacecraft engine design.

The gap between the cylinders and therotor is about 1.5mm. You see also the aluminum wheel with twowhite marks for measuring the turn speed with an optical tachometer.

The 4mm steel shaft has been mounted with two 12mm ball bearings fixed on the wooden supports (see thepicture).

Experimental setup: The PFT motor mk2 has been tested successfully powered with an electronic High Voltage DC generator, the current has been measured with a digital multimeter and the turn speed with anoptical tachometer. The motor doesn't start itself, a gently pushis required for inducing a rotational asymmetry in the E-Fieldand thus a continuous asymmetrical S-Flow :

Spinningof asymmetrical E-fields is the main key of this motor

See also:

The PFT Motor mk2 is fully capable to runat high speed with a propeller ( a 6/4" pitch, 15/10 cm )Graupner

Additional notes : "InMarch 1971, Dr. Oleg Jefimenko proved that a wire held aloft by a ballon at 1200 feet altitude would provide 70watts of high-voltage power to an electrostatic motor (animproved version of the Franklin motor) for as long as the ballonstayed at that altitude. The wire was a high impedance conductor;and the motor ran at 12,000 rpm or about 200 pulses per second.The motor was a small capacitance device;and had it been run at the impossible rate of 20,000 pulses persecond (120,000 rpm) it might have drawn down some 7000 watts of free power !!" ( from the "VindicatorScrolls" volume one by Stan Deyo, publishers: WestAustralian Texas Trading)