The invention relates to a rotary wing aircraft (1) with a propulsion system and one or more consumer units (2).Said propulsion system comprises control means, two or more primary power units (3), at least one of the primary power units (3) being controllable by the control means to be optionally inoperative while at least another one of the primary power units (3) is fully operative.Said propulsion system comprises at least one supplementary power unit (7), controllable by the control means to be optionally operative and at least one gearbox (5) with input and output interfaces.Said at least one gearbox (5) is connected by means of said output interfaces to the one or more consumer units (2).Each of the primary and supplementary power units (3, 7) are connected by means of said input interfaces to said at least one gearbox (5).
Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Extension States: BA ME
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