Schaufelbefestigungsanordnung und Verfahren zur Reduzierung von Spannungen in einer Schaufelbefestigungsanordnung

摘要

A blade firtree bearing surface (26) and/or the disk broached slot bearing surface (48) is "crowned" to reduce the stresses at the edges thereof and more uniformly distribute the load. The width of the bearing surface is increased over the conventional flat bearing surface of the blade firtree and/or the bearing surfaces of the disk broach by judiciously moving the contact point to a discrete location.