Controlled snow-making process and apparatus

F - Mech Eng,Light,Heat,Weapons – 25 – C

Patent

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F25C 3/04 (2006.01)

Patent

CA 2472433

A method and apparatus suitable for producing an artificial snow surface for tire evaluation is provided. The process provides for manufacturing a series of snow layers, each layer followed by a packing and a grooming step to provide a multi-layered snow surface. Desirable shear strength proeprties of the snow surface are enhanced by a surface grooming technique that applies a layer of water to the upper snow surface followed by grooming of the surface. The manufactured snow surface allows the testing and evaluation of tires that compares favorably to tire evaluation data obtained from outdoor testing facilities.

L'invention concerne un procédé et un appareil capable de produire une surface de neige artificielle permettant d'évaluer des pneus. Ledit procédé permet de fabriquer une série de couches de neige, chaque couche de neige subissant ensuite une étape de tassement et de damage pour obtenir une surface de neige multicouches. Des propriétés souhaitées de résistance au cisaillement sont améliorées par une technique de damage de la surface qui consiste à appliquer une couche d'eau sur la surface supérieure de neige puis à damer ladite surface. Ladite surface de neige produite permet un essai et une évaluation des pneus, pouvant se comparer de manière favorable aux données d'évaluation de pneus obtenues à partir d'installations d'essai en extérieur.

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