Issue 17 - Free-Energy Devices

A cylindrical carbon-steel magnet M (of
magnetization 2.0•105 A/m, of outer radius 55
mm and height 25 mm) can rotate around a nonconducting
axle A mounted on the top of a
central electrode E. In a case of precise
measurements, the axle must be replaced by thin
thread Z. The magnet is furnished with two
rectangle thin (about 1mm) vanes (of height 45
mm and diametrical size 50 mm) made of
plastic.
The magnet is located axially symmetrically
with a vessel C (of height 50 mm and diameter
150 mm) so that the vanes are partly or entirely
submerged in a conducting liquid L. The
cylindrical surface C of the vessel and the
central electrode E (of diameter 5mm) are made
from cooper. The bottom of the vessel is
insulator, of course. In this experiment, the
conducting fluid is 10% copper sulphate
solution (CuSO45H2O).
The height of the central electrode is equal to
one of the vessel.
When the direct current of strength I flows in
the electric circuit, the magnet and the liquid
in the vessel rotate together in the direction of
the magnetic force F as shown in Fig. 1. The
rotation of the conducting liquid in the vessel
is caused by the Lorentz forces F exerted by the
magnet on positive and negative ions drifting
with velocities v + and v - , respectively, in the
magnetic field of inductance B. In fact, the
magnetized body situated above the conducting
liquid pushes the liquid out in the direction
perpendicular the magnetization of the body
and the density of the electric current. Having
acted on the vines this volume of the liquid
carries the magnet. This is the sail-effect in
which each vine plays role of a sail.
Note, first of all, that this system differs from
the thruster system “Yamato-1” principally.
Namely, in this system the liquid and the magnet
move in one direction. In case of propulsion
system “Yamato-1”, the water and the ship move
in opposite directions.
The construction and its parameters are
original. Therefore experimental results
confirming reality of such a device are necessary.
The set of the experimental data that tells us
New Energy Technologies, Issue #3 (18) 2004
Fig. 2. Experimental values of the torque N exerted on the
rotor of the MHD-motor at various depths of immersion d and
strengths of direct current I .
about values of the torque acting on the mobile
part of the MHD-motor is shown in Fig. 2.
These are the dependencies of the torque N on
the depth of immersion d at various values of
direct current I. In any case, experimental
magnitudes of the torque N are significant. It is
interesting to note existence of a diapason of
the immersion depths where the torque does not
practically change. It would be a good thing to
test this result in detail. There exists a lot of
possibilities to improve the parameters of this
MHD-motor. One way to do this is to use a
magnet with higher magnetization. The second
method is to optimize the geometry of the
system. Theoretical calculation can be useful
here. Another way is to change the profile of
the vines. This will enable to increase the net
effective force which charged particles transfer
to the vines and, therefore, to the rotor of the
MHD-motor.
References
1. Takezawa S. et al. Operation of the
Thruster Superconducting
Electromagnetohydrodynamic Propulsion Ship
‘YAMATO-1’. // Bulletin of MESJ. 1995. V. 23.
N 1. P. 46-55.
2. Gerasimov S.A. Self-Interaction and Vector
Potential in Magnetostatics. // Physica
Scripta. 1997. V. 56. P. 462-464.
3. Gerasimov S.A., Volos A.V. On Motion of
Magnet in Conducting Fluid. // Problems of
Applied Physics. 2001. V. 7. P. 26-27.
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