| 摘要 |
<p>A snubber assembly (230) for an unmanned aerial vehicle (10) including a rotor assembly (100) having ducted counter-rotating rotors (200, 202), the rotor assembly (100) including a rotor shaft (128R or 130R), a torque tube (270) having an inboard end, and a flexbeam (260) having an inboard end (262), comprising:
a bracket (238) configured to be secured in combination with the inboard end of the torque tube (270);a spherical bearing (232) secured in combination with said bracket (238); anda rotor hub (204), configured for securement in interlocked, engaged combination with the rotor shaft (128R or 130R), having a plurality of radially extending arms (214), each of said radially extending arms (214) including means for securing the inboard end (262) of the flexbeam (260) in combination with the rotor hub (204) and means for rotatably mounting said spherical bearing (232), bracket (238) combination internally in said rotor hub (204);said internally rotatably mounted spherical bearing (232), bracket (238) combination being positioned inboard of said outboard end of said radially extending arm (214) and inboard of the inboard end (262) of the flexbeam (260);
characterized in thatsaid securing means of each said radially extending arm (214) comprises a clevis (220); andsaid rotatably mounting means for each said radially extending arm (214) comprises an inboard internal bulkhead (223), an outboard internal bulkhead (224), said inboard and outboard internal bulkheads (223, 224) in combination defining a bearing cavity (225) and an inboard cavity (226), and a bearing bolt (234);said bearing bolt (234) being disposed in combination with said outboard internal bulkhead (224), said spherical bearing (232), and said inboard internal bulkhead (223) for rotatably mounting said spherical bearing (232), bracket (238) combination in said bearing cavity (225).</p> |
