| 摘要 |
This invention relates to a double-flow turboshaft engine with confluent nozzle, i.e. of the type having a central generator emitting via its outlet orifice a flow of hot gas and an annular bypass duct which surrounds the central generator and through which passes a bypass flow of relatively cold gas, the gas flows being freely confluent within the nozzle which extends the annular duct in convergent manner beyond the outlet orifice of the central generator, wherein it includes controlled means for momentarily varying on the periphery the passage of the flux of relatively cold gas in the annular bypass duct, with a view to compensating, at least partly, the degradation of the performances of the turboshaft engine when they are limited either by the maximum operational temperature of the central generator or by the maximum power of the engine, but not by these two conditions simultaneously.
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