| 摘要 |
A drive system (16) includes a planetary gear system (44). An input (40) is affixed to a sun gear (50) of the planetary gear system (44) to rotate therewith and an output (48) is affixed to the output ring gear (56) to rotate therewith. A first brake system (46) is selectively operable to rotationally lock an output ring gear (56) of the planetary gear system (44), and a second brake system (42) is selectively operable to rotationally lock the planet carrier (54) of the planetary gear system (44). Rotary-wing aircraft (10) implementations of the drive system are also disclosed. |
