Component with internal damping

Details Component with internal damping Component with internal damping

2006-07-04

2006-07-04

Look, Edward K. (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Having wear liner, sheathing or insert

C416S232000, C416S22900R, C416S500000

Reexamination Certificate

active

07070390

ABSTRACT:
A component such as a blade for use in a gas turbine engine comprises a body2formed from outer panels8, 10defining an internal cavity12. A damping element14is provided in the cavity12and is secured at one end between the panels8, 10at one end of the body2, for example adjacent the root of the blade. Damping material fills the cavity12and so extends between the damping element14and the panels8, 10. Vibration induced in the blade causes relative movement between the body2of the blade and the damping element14, causing energy loss in the damping material which damps the vibration.The components8, 10, 14may be secured by a diffusion bonding process.

REFERENCES:
patent: 2828941 (1958-04-01), Foley
patent: 3758233 (1973-09-01), Crosse et al.
patent: 3867068 (1975-02-01), Corsmeier et al.
patent: 4441859 (1984-04-01), Sadler
patent: 6669447 (2003-12-01), Norris et al.
patent: 0 568 201 (1996-07-01), None
patent: 0 926 312 (1999-06-01), None
patent: 2 078 310 (1982-01-01), None
patent: 2371 095 (2002-07-01), None

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