Blade arrangement

Details Blade arrangement Blade arrangement

2008-07-15

2008-07-15

Nguyen, Ninh H (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Method of operation

C416S016000, C416S500000, C415S010000, C415S119000

Reexamination Certificate

active

07399158

ABSTRACT:
A blade arrangement31includes an array of radially extending blades20, which may for example comprise a fan of a gas turbine engine for an aircraft. The blades20are mounted for rotation about a central axis X-X. The blade arrangement31further includes a damping arrangement32comprising means34for inducing an axi-symmetric magnetic field whose axis of symmetry coincides with the central axis X-X of rotation of the blades20. The damping arrangement32is configured such that when the magnetic field is induced, any movement of the blade20other than pure rotation about the central axis results in the magnetic field causing a force to be exerted on the blade20, the force resisting such movement. The damping arrangement may be provided with means for inducing the magnetic field only when there is an increased likelihood of vibration of the blades, for example when a foreign body has entered the air intake of the engine.

REFERENCES:
patent: 4722668 (1988-02-01), Novacek
patent: 5490759 (1996-02-01), Hoffman
patent: 5709527 (1998-01-01), Ernst
patent: 6213737 (2001-04-01), Murakami et al.
patent: 2003/0213660 (2003-11-01), Bhattacharya et al
patent: 0 217 924 (1995-03-01), None

Affiliated with

Also associated with

Rating

Blade arrangement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Blade arrangement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Blade arrangement will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2771729