| 摘要 |
PCT No. PCT/GB96/02791 Sec. 371 Date Jul. 7, 1998 Sec. 102(e) Date Jul. 7, 1998 PCT Filed Nov. 14, 1996 PCT Pub. No. WO97/18127 PCT Pub. Date May 22, 1997An apparatus for causing an aircraft wheel to rotate in an airflow includes wind-catching members disposed around a central axis. The wind-catching members are moved between a non-operative, retracted position and an operative-extended position in which the wind-catching members project outside the outer radial periphery of the aircraft wheel. Alternatively, at least one nozzle or vent is provided, centered on the axle of the wheel and arranged to expel air at least partially circumferentially, along with an air supply for providing air to the at least one nozzle or vent. The air supply includes a compressed air source and an air supply passage connecting the compressed air source to the at least one nozzle or vent. Each nozzle or vent is rotatable with the wheel so that the expulsion of air causes rotation of the wheel.
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