초록 ▼

A flexible beam rotor assembly for an aircraft includes a rotor spar having an axis of rotation and a hole through which the axis of rotation passes. A spindle has a teetering connection to the rotor spar, the teetering connection having a teetering axis above the rotor spar at the rotor axis of rot

A flexible beam rotor assembly for an aircraft includes a rotor spar having an axis of rotation and a hole through which the axis of rotation passes. A spindle has a teetering connection to the rotor spar, the teetering connection having a teetering axis above the rotor spar at the rotor axis of rotation. A spindle housing is nonrotatably mounted to the aircraft and rotatably receives the spindle. The spindle housing and spindle protrude through the hole in the rotor spar and are tiltable in response to pilot control on a left-right spindle pivot axis and a fore-aft spindle pivot axis. The left-right spindle pivot axis and the fore-aft spindle pivot axis are located below the teetering axis and above the rotor at the rotor axis of rotation. A pylon is pivotally mounted to the fuselage for fore and aft movement relative to the fuselage to absorb vibration due to rotation of the rotor during forward flight of the aircraft. The spindle housing is attached to the pylon by a universal joint. A pair of pylon arms are pivotally connected to a lower end of the pylon. A pair of pushrods are pivotally connected between the pylon arms and the spindle housing. The pylon, spindle housing, arms, and pushrods form a parallelogram which allows the spindle to move fore and aft to absorb vibration without changing spindle tilt.

대표청구항 ▼

[ What is claimed is:] [1.] A flexible beam rotor assembly for an aircraft, comprising:a rotor spar having an axis of rotation and a hole through which the axis of rotation passes;a spindle which protrudes through the hole in the rotor spar and is rotatable on the axis of rotation, the spindle havin

[ What is claimed is:] [1.] A flexible beam rotor assembly for an aircraft, comprising:a rotor spar having an axis of rotation and a hole through which the axis of rotation passes;a spindle which protrudes through the hole in the rotor spar and is rotatable on the axis of rotation, the spindle having a teetering connection to the rotor spar, the teetering connection having a teetering axis above the rotor spar at the rotor axis of rotation; anda spindle housing which is adapted to be nonrotatably mounted to an aircraft, the spindle being rotatably mounted in the spindle housing, the spindle housing adapted to be tiltable in response to pilot control on a left-right spindle pivot axis and a fore-aft spindle pivot axis, the left-right spindle pivot axis and the fore-aft spindle pivot axis being located above the rotor spar at the axis of rotation and below the teetering axis.