| 摘要 |
<p>A rotor blade actuation system (100) is disclosed for controlling extension and retraction of an outboard blade section (18) of a rotor blade (14) by varying the speed and direction of rotation between a main rotor shaft (22) and a blade actuation shaft (48). The rotor blade actuation system (100) includes a drive gear (102) on the main rotor shaft (22) and a blade actuation drive gear (134) on the blade actuation drive shaft (48). A primary drive unit (140) is engaged with and transmits rotary motion from the main rotor shaft (22) to the blade actuation shaft (48). The primary drive unit (108) includes an input gear (106) engaged with the drive gear (102). A primary drive is engaged (112) with the drive gear (102) through an input gear (106) and a master clutch (110). An output drive (128) is engaged with the blade actuation drive gear (134). A forward clutch (122) controls engagement of a forward planetary gearset (124) with the primary drive (112) and the output drive (128). The engagement of the forward planetary gearset (124) causes the blade actuation shaft (148) to rotate in the same direction as the rotation of the main rotor shaft (122). A reverse clutch (130) controls engagement of a reverse planetary gearset (118) with the primary drive (112) and the output drive (128). The engagement of the reverse planetary gearset (118) with the primary drive (112) and the output drive (128) causes the blade actuation shaft (48) to rotate in the opposite direction from the rotation of the main rotor shaft (22). A rotor blade actuation control unit (136) controls engagement and disengagement of the forward and reverse clutches (122, 130).</p> |
