System for changing the pitch of the contra-rotating propellers of a turboshaft engine

The invention relates to a system (25), comprising: a linear actuator (26) axially arranged in the first propeller (9) and rotatably secured thereto, a first linking mechanism (27) connecting the rod of said linear actuator (26) to the second propeller (9) in order to change the setting of the blade...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WOUTER BALK, GILLES ALAIN CHARIER
Format:	Patent
Sprache:	eng
Schlagworte:	AEROPLANES AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COSMONAUTICS ENGINE PLANTS IN GENERAL EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HELICOPTERS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NON-POSITIVE DISPLACEMENT PUMPS PARACHUTES PERFORMING OPERATIONS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a system (25), comprising: a linear actuator (26) axially arranged in the first propeller (9) and rotatably secured thereto, a first linking mechanism (27) connecting the rod of said linear actuator (26) to the second propeller (9) in order to change the setting of the blades thereof, and including an intermediate bearing (35) between the propellers, which is capable of transmitting the translation of the rod of the actuator (26) and disconnecting the rotatable link to the first propeller (8) in order to make it possible to change the setting of the blades of the second propeller (9) rotated in the opposite direction to the former, and a second linking mechanism (28) combined with the blades of the first propeller (8) in order to change the setting thereof.