| 摘要 |
A rotary ski slope comprises a disc, the upper surface of which is a skiing surface, mounted 15 with its main axis tilted to the vertical, at least a portion of the disc being rotatable about the main axis and the diameter of the disc being at least 100 metres. Optionally the disc can be supported on air bearings (fig. 13B) and may have a cooling system to distribute coolant gas underneath the disc. Preferably retractable snow cannons or snow grooming apparatus may be provided and mounted on a vehicle 45 or gantry, to apply and maintain artificial snow on the disc surface. The slope may be tilted at an angle of 5-40{ to the vertical and is optionally adjustable. The disc might be divided in to a plurality of concentric rings which may be stationary 6, 2 or driven at different speeds and possibly in different directions. A flexible disc with a non-planar support may be used to raise or lower the disc at its circumference. The disc can be formed from arcuate segments which may be driven independently by a linear motor along a circular support rail. The disc may also be entirely enclosed. |
