| 摘要 |
1454835 Helicopter rotor swashplate mechanism BOEING CO 27 March 1974 [26 April 1973] 13605/74 Heading B7W In a helicopter rotor mounted on a rotor shaft 17 collective and cyclic pitch control of the blades is achieved through a swashplate of which the outer non-rotating ring 20 is connected to pilot's controls by actuators 22 and the inner rotating ring 18 to which upwardly-extending pitch control links, not shown, are connected, is connected to the rotor shaft to be driven thereby by pairs of scissors links 26a, 26b. Each scissor comprises links 28, 30, the links 30 of each scissor 26a being connected by pivots 34 to a fitting 38 rigidly connected to shaft 17. The fitting 38 forms the inner member of flexible mounts 36 each having an elastomeric element 40 bonded thereto and to an outer fitting 42 to which fittings the links 30 of scissors 26b are respectively connected by pivots 44. A further scissors linkage (Fig. 5, not shown) connects outer ring 20 to aircraft structure. |
