FIELD: aircraft engineering.
SUBSTANCE: claimed device for propfan turbomachine comprises weight (14) to change said propellers to feathering by centrifugal force. Also, it comprises drive gear (9) to turn control axle (13) to change propeller pitch from thrust position to reversing position via zero-pitch position. Weight (14) stays at unstable equilibrium relative to centrifugal force effects when said control axle drives the pitch of propellers (6) through zero-pitch position. Note here that this device comprises drive gear (19) to create the torque at said control axle (13) when said weight stays at said unstable position to impede its stay thereat.
EFFECT: weights crossing the blade zero-pitch position.
14 cl, 9 dwg
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