The aircraft (1) i.e. rotary wing aircraft, has a revolving aerofoil (2), two identical primary turboshaft engines (11, 12) and a secondary turboshaft engine (13) that is able to function according to a specific mode by providing a secondary power proportional to a main power according to a proportionality factor lower or equal to 0.5. A control system (20) drives the revolving aerofoil by allowing the primary engines to permanently function during a flight, and in complement allows the secondary engine to function during a predetermined specific phase. An independent claim is also included for a method for using an aircraft.
Procédé et aéronef à voilure tournante muni de deux turbomoteurs principaux et d'un turbomoteur secondaire moins puissant
Method and rotary-wing aircraft provided with two main turboshaft engines and one less-powerful secondary turboshaft engine
Verfahren und Drehflügelflugzeug vorgesehen mit zwei Haupturbinentriebwerken und einem weniger leistungsstarken sekundären Turbinentriebwerk
2016-07-06
Patent
Electronic Resource
French
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