| 摘要 |
A gas turbine engine includes a spool (30), a turbine (46) coupled to drive the spool (30), a propulsor (42) coupled to be driven at a at a design speed by the turbine (46) through the spool (30), and a gear assembly (48) coupled between the propulsor (42) and the spool (30). Rotation of the turbine (46) drives the propulsor (42) at a different speed than the spool (30). The propulsor (42) includes a hub (76) and a row (72) of propulsor blades (74) that extend from the hub (76). Each of the propulsor blades (74) includes an airfoil body. The leading edge (82) of the airfoil body has a swept profile such that, at the design speed, a component of a relative velocity vector of a working gas that is normal to the leading edge (82) is subsonic along the entire radial span. |
