Snowmaking apparatus and methods.

摘要

An improved ducted-fan type snowmaking machine and method wherein an impeller (24) within a duct (22) is driven at a variable speed selected to produce a variable noise level depending on the proximity of the apparatus to an inhabited area. The machine includes air stream straightening vanes (31) for converting a spiraling stream to a linear, laminar flow stream, and a plurality of neucleating nozzles (60) positioned within the confines of the duct. <IMAGE>