The ARDA v2.0 - Closed loop test
Advanced Reduced Drag Aircraft
By Jean-Louis Naudin
created on June 22th, 1999 - JLN Labs - Last update June 22th, 1999

The purpose of this experiment is to prove that the EHD system can also act as propulsion engine. The ARDA Flying Wing v2.0 is a light weight flying aircraft which uses an EHD (Electro-HydroDynamics) configuration based on the T.T. Brown effect for reducing significantly the air drag on the wings during the fly, this increases significantly the flight performances and generates a thrust during the flight.

Experimental setup: The ARDA Flying wing v2.0 is able to fly freely for many turns, tethered on a specialy balanced equipement. The 30kV DC High Voltage generator has been placed under a wooden table just under the rotation axis. The EHD system is composed of aluminum foils which cover the extrados and the intrados of the wing and are connected to a High Voltage +30 kV generator. A thin copper wire placed just in front of the leading edge of the wing has been connected to the zero potential.

Tests Results : When the +30kV DC High Voltage generator is switched on, the wing begins to accelerate quickly and continues to turn at high speed. This proves definitely this EHD system can reduce significantly the air drag (negative air drag) but also act as a propulsion engine. (see the video below).

RealVideo of the ARDA v2.0 in closed loop test

( if you don't have the RealPlayer 5.0, you may download it freely at : )

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