초록 ▼

Diametrically opposed rotor blades of a helicopter rotor are interconnected by a strap member which is flexible in torsion and in a plane perpendicular to a plane of rotation and has a plan profile extending between leading and trailing edges. Each rotor blade is provided with inwardly extending lev

Diametrically opposed rotor blades of a helicopter rotor are interconnected by a strap member which is flexible in torsion and in a plane perpendicular to a plane of rotation and has a plan profile extending between leading and trailing edges. Each rotor blade is provided with inwardly extending lever means adapted for attachment to drive means externally of the strap plan profile and adjacent one of its edges and to pitch control means externally of the plan profile and adjacent the other of its edges. In one embodiment, the lever means comprise individual levers formed integral with a connecting member rotationally fixed to the rotor blade and in a further embodiment the lever means comprise an inwardly extending torque sleeve. The drive means attachments of opposed blades lie along a common axis parallel to the plane of rotation and intersecting the axis of rotation at approximately 45 degrees to a longitudinal axis of the strap member.

대표청구항 ▼

A helicopter rotor including, rotor drive means, pitch control means, at least one pair of diametrically opposed rotor blades arranged for rotation about an axis, a generally flattened strap member interconnecting opposed blade pairs with its major dimension coincident with the plane of rotation and

A helicopter rotor including, rotor drive means, pitch control means, at least one pair of diametrically opposed rotor blades arranged for rotation about an axis, a generally flattened strap member interconnecting opposed blade pairs with its major dimension coincident with the plane of rotation and extending between leading and trailing edges, the strap member being flexible in torsion and in a plane perpendicular to the plane of rotation, lever means attached to each rotor blade and including first connection means pivotally attached to said rotor drive means externally of the strap member and adjacent one of its edges so that the pivotal attachments of opposed blades are on a common axis parallel to the plane of rotation and intersecting the axis of rotation at approximately 45 degrees to the longitudinal axis of the strap member, and second connection means pivotally attached to said pitch control means externally of the strap member and adjacent the other of its edges.