EU solidarity with Ukraine
Prozorro+: Ukrainian public procurement platform
Germany-Köln: Horizon Europe Project: Helicopter Vortex Ring State Experimental Research (2nd Launch)
Section I: Contracting authority
Section II: Object
Horizon Europe Project: 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.
The following outcome will be required with this experimental research:
1) to experimentally determine the flight conditions at which the vortex ring state (VRS) starts to develop to support and evaluate the correctness of theoretical methods for prediction of the vortex ring boundaries;
2) to experimentally evaluate the effectiveness of the Vuichard recovery technique.
The procedure was published before under ref EASA.2021.HVP.19 (OJ 2021/S 133-352404).
Changes to the previous publication are:
— reduction from three to a minimum of two different helicopter rotor designs;
— reduction from three to a minimum of two flight test pilots;
— increase of the budget by EUR 80 000,00.
Section III: Legal, economic, financial and technical information
Section IV: Procedure
Section VI: Complementary information
See internet address provided in Section I.3).