Resumo

RINCON, JOSUE; MARTINEZ, LAURA  e  CORREA, RODRIGO. EXPERIMENTS WITH AN ELECTRODYNAMIC LIFTER PROTOTYPE. Dyna rev.fac.nac.minas [online]. 2010, vol.77, n.164, pp.167-177. ISSN 0012-7353.

this article describes the design, construction and experiments of a prototype capable to levitate when it is subject to a high d.c. voltage between its electrodes, 24 to 30kV. Although this phenomenon it is well known for more than one century, its cientific basis are not known yet and there is not available a mathematical model which explains its behavior when it is subject to changing experimental conditions such voltage, geometry, weight, relative humidity and temperature of its environment. Besides the replication of this exceptional phenomenum, several straightforward experiments were carried out to show some of its outstanding characterístics. Because it needs a high voltage difference between its electrodes, it was proved that it works as a conventional electrostatic separator because it eliminated solid particles from a gas sample confinated in a container or flowing, with the advantage of low energy requirements. In the same way, at the operational conditions, it produces ozone in a controlled way. It seems due to the strong air ionization as observed in the well known corona effect.

Palavras-chave : antigravitatory systems; asymetric condenser; air ionization.

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