Turbomachine revolving blade e.g. fan blade, has fastening foot engaged and radially retained in cavity of corresponding shape of rotor disk with cavities having helical shape, where foot has helical shape

摘要

The blade (200) has a fastening foot (202) that is engaged and radially retained in a cavity of corresponding shape of a rotor disk (100) with cavities (104) having helical shape. An aerodynamic surface (204) extends from the foot, when the blade is mounted from the foot till a head of the blade and axially between a leading edge and a trailing edge. The foot of the blade has a helical shape. Independent claims are also included for the following: (1) a turbomachine rotor disk (2) a device for fastening a revolving blade on a turbomachine rotor disk (3) a turbomachine comprising a device for fastening a turbomachine revolving blade on a turbomachine rotor disk.