The present invention provides a centrally positioned pitch control device for a coaxial double-propeller helicopter, belonging to the technical field of helicopter structure. The coaxial double-propeller helicopter comprises an upper propeller hub (2) and a lower propeller hub (18); a blade I (1) being mounted on the outside of the upper propeller hub (2); and a blade II (16) being mounted on the outside of the lower propeller hub (18), characterized in that said centrally positioned pitch control device is located between the upper propeller hub (2) and the lower propeller hub (18). The centrally positioned pitch control device is located at the middle part of a central shaft (19) between the upper propeller hub (2) and the lower propeller hub (18). The centrally positioned pitch control device may shorten the motion transmission distance, decrease the number of conversion links, enhance the control precision and stability, and reduce the manufacturing difficulty.
INTER-ROTOR BLADE PITCH CONTROL DEVICE OF COAXIAL DOUBLE-ROTOR HELICOPTER
INTERROTORBLATTWINKELSTEUERUNGSVORRICHTUNG EINES HUBSCHRAUBERS MIT KOAXIALEM DOPPELROTOR
DISPOSITIF DE RÉGLAGE DU PAS DES PALES ENTRE LES ROTORS D'UN HÉLICOPTÈRE À DOUBLE ROTOR COAXIAL
2019-06-05
Patent
Elektronische Ressource
Englisch
IPC: | B64C AEROPLANES , Flugzeuge |
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