U.S. patents available from 1976 to present.
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Stall prediction method for axial flow compressor

Patent 6715984 Issued on April 6, 2004. Estimated Expiration Date: Icon_subject June 10, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Compressor stall and surge control using airflow asymmetry measurement
Patent #: 5915917
Issued on: 06/29/1999
Inventor: Eveker, et al.

Method and apparatus for predicting and stabilizing compressor stall
Patent #: 6098010
Issued on: 08/01/2000
Inventor: Krener, et al.

Control system for preventing compressor stall Patent #: 6231306
Issued on: 05/15/2001
Inventor: Khalid

Inventors

Assignee

Application

No. 10165927 filed on 06/10/2002

US Classes:

415/1, METHOD OF OPERATION415/118, WITH INSPECTION, SIGNALING, INDICATING OR MEASURING MEANS415/914DEVICE TO CONTROL BOUNDARY LAYER

Examiners

Primary: Nguyen, Ninh H.

Attorney, Agent or Firm

International Class

F01D 2500

Abstract

In order to provide a stall prediction method for an axial flow compressor, a high response pressure sensor is provided in a duct wall adjacent to the leading edge of the rotor blade and a rotating stall is predicted by computing autocorrelation of pressure data obtained as a time history data. The initiation of rotating stall is determined when the autocorrelation of the time history data starts dropping rapidly. When it is determined that the rotating stall is imminent, generation of the rotating stall is prevented by taking necessary countermeasures such as to reduce the fuel supply.

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