Rotary kinetic fluid motors or pumps – Method of operation
Reexamination Certificate
2006-05-16
2010-11-02
Look, Edward (Department: 3745)
Rotary kinetic fluid motors or pumps
Method of operation
C415S118000, C415S061000
Reexamination Certificate
active
07824147
ABSTRACT:
A method and control for predicting the remaining useful life of an airfoil for a gas turbine engine includes the steps of monitoring conditions of the blade such as flutter, leaning, etc. A measured amount of deflection of the airfoil is compared to tabulated data to predict an expected crack length which is likely causing the deflection, etc. Once a predicted crack length has been identified, the amount of accumulated damage to the airfoil at the crack is monitored and stored. The amount of useful life for the blade can be predicted by compiling the accumulated damage over time. The useful life remaining can be displayed such that flight plans or maintenance schedules for the aircraft can be modified as appropriate.
REFERENCES:
patent: 4573358 (1986-03-01), Luongo
patent: 4804905 (1989-02-01), Ding et al.
patent: 4887468 (1989-12-01), McKendree et al.
patent: 4896537 (1990-01-01), Osborne
patent: 4914953 (1990-04-01), Viscovich
patent: 4922757 (1990-05-01), Rozelle et al.
patent: 5097711 (1992-03-01), Rozelle et al.
patent: 5148711 (1992-09-01), Twerdochlib et al.
patent: 5411364 (1995-05-01), Aberg et al.
patent: 5440300 (1995-08-01), Spillman, Jr.
patent: 5761956 (1998-06-01), Beeson et al.
patent: 5900555 (1999-05-01), Westphal et al.
patent: 6094989 (2000-08-01), Twerdochlib
patent: 6761528 (2004-07-01), Woditschka
patent: 6838157 (2005-01-01), Subramanian
patent: 7034711 (2006-04-01), Sakatani et al.
patent: 2004/0037693 (2004-02-01), Stabley et al.
patent: 2005/0129498 (2005-06-01), Brooks
patent: 2005/0261820 (2005-11-01), Feeney et al.
patent: 2006/0056959 (2006-03-01), Sabol et al.
patent: 2006/0070435 (2006-04-01), LeMieux et al.
patent: 2007/0139193 (2007-06-01), Arik et al.
patent: 2007/0258807 (2007-11-01), Brummel
Littles Jerrol W.
Morris Robert J.
Tulpule Sharayu
Carlson & Gaskey & Olds
Eastman Aaron R
Look Edward
United Technologies Corporation
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