Controlling the axial position of a fan blade

Details Controlling the axial position of a fan blade Controlling the axial position of a fan blade

2005-06-28

2005-06-28

Verdier, Christopher (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific working member mount

Blade received in well or slot

C416S22000A

Reexamination Certificate

active

06910866

ABSTRACT:
A fan rotor includes a disk having a rim with a plurality of substantially axial grooves that are spaced apart angularly. Removable blades extend radially outwards from the periphery of the disk. Each blade has a blade root in a respective groove. A downstream flange plate can be secured to the disk with the downstream faces of the blade roots being in abutment against the downstream flange plate. An upstream flange plate is secured to the disk so as to retain the blade roots in the grooves. In the rotor, the upstream flange plate is fitted on its downstream face with a resilient device configured to exert sufficient force on the upstream faces of the blade roots, after assembly, to prevent an axial displacement of the blades during normal operation (apart from exceptional events of the type in which foreign bodies are ingested or blades are lost).

REFERENCES:
patent: 4033705 (1977-07-01), Luebering
patent: 4405285 (1983-09-01), Surdi
patent: 4523890 (1985-06-01), Thompson
patent: 5259728 (1993-11-01), Szpunar et al.
patent: 5282720 (1994-02-01), Szpunar
patent: 5540552 (1996-07-01), Surdi
patent: 6595755 (2003-07-01), Brioude et al.
patent: 0 690 203 (1996-01-01), None
patent: 2561307 (1985-09-01), None
patent: 2 262 139 (1993-06-01), None

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