초록 ▼

A helicopter rotor having an even number of articulated blades wherein opposing blades are interconnected by a common spar passing across the rotor axis. Pitch change is introduced to the blade at the spar-blade attachment joint through a torque member connected at its outboard end to the blade join

A helicopter rotor having an even number of articulated blades wherein opposing blades are interconnected by a common spar passing across the rotor axis. Pitch change is introduced to the blade at the spar-blade attachment joint through a torque member connected at its outboard end to the blade joint and including a control horn at its inner end to receive pitch inputs. Drive for the rotor and support for each blade is provided by a spherical bearing directly connecting the torque member to the blade associated hub arm.

대표청구항 ▼

A helicopter rotor having one or more pairs of opposed blades, each pair connected by a common spar, said spar being flexible in torsion and bending, a rotor hub, a rigid blade attachment joint formed between said spar and each associated blade, a rigid torque member mounted at said blade attachment

A helicopter rotor having one or more pairs of opposed blades, each pair connected by a common spar, said spar being flexible in torsion and bending, a rotor hub, a rigid blade attachment joint formed between said spar and each associated blade, a rigid torque member mounted at said blade attachment joint, said member extending radially inward from said joint, pitch change connecting means provided at the inner ends of said member, each blade supported by a bearing, one race of said bearing attached to said hub and the other race attached to the torque member of said blade, said blade support allowing unrestricted spar torsional and bending freedom between opposite blade attachment joints.