| 摘要 |
Folded helicopter blades are secured against undesirable motion by a device that attaches to a receptacle in the underside of each blade. The device comprises a pin for engaging the receptacle, a spherical bearing disposed about the pin, an annular housing disposed about the bearing and including two diametrically opposed recesses therein, a primary strut attached at one end to the fuselage and at the other end to a clevis-type yoke, wherein the yoke ends are pivotally attached to the housing within the recesses, a secondary strut attached at one end to the fuselage and attached at the other end to the primary strut near the yoke. This arrangement forms a three bar linkage.
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