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Helicopter Vortex Ring State Experimental Research (2nd Launch)

The vortex ring state (VRS) is an aerodynamic condition for helicopters normally generated in nearly vertical or vertical descent when the relative upward air velocity equals the downward induced main rotor flow rate. This research should provide a better understanding of the VRS phenomenon on different kinds of helicopters, the analytical and simulation prediction methods, and flight test methods for its determination. It should further provide an indication of the effectiveness of alternative recovery manoeuvres such as the one proposed by Capt. Vuichard.

Please note that the 1st launch under tender reference EASA.2021.HVP.19 was not succesful.

For all information and status on the call for tender related to the project, please visit EASA.2022.HVP.02