F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
F01D17/00—Regulating or controlling by varying flow
F01D17/10—Final actuators
F01D17/12—Final actuators arranged in stator parts
F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
Ensemble de pièces pour turboréacteur dont une pièce est sujette à des coïncidences vibratoires et procédé de modification de la fréquence propre de cet ensemble de pièces