Electrostatic engine diagnostics with acceleration related threshold
First Claim
Patent Images
1. Electrostatic diagnostic apparatus for an operating gas turbine engine, comprising:
- electrostatic signal means, including a probe to be disposed in the gas stream of an engine, for providing, when said probe is disposed in the gas stream of an operating engine, a probe signal having a waveshape defined by amplitude variations thereof across a time interval of a given duration in response to electrostatic charge flowing in the gas stream in the vicinity of said probe;
speed means connected for response to the rotary speed of said engine to provide a speed signal indicative thereof;
signal processing means connected for response to said electrostatic signal means and to said speed means, responsive to said speed signal for providing a threshold signal indicative of a threshold amplitude as a function of the rate of change of speed of the engine, and for providing a signal indicative of the characteristics of amplitude variations in said probe signal in response to said amplitude variations exceeding said threshold amplitude.
1 Assignment
0 Petitions
Accused Products
Abstract
A voltage threshold utilized (FIG. 8) to recognize signals of interest provided by probes (1, 2, 3) of a gas turbine engine for analysis of waveshapes (FIGS. 57-80) indicative of the engine event causing the signals, includes an acceleration component (FIGS. 3 and 4), whereby to avoid collecting records of signals related only to normal acceleration and deceleration, without masking abnormal signals which occur with acceleration or deceleration.
12 Citations
2 Claims
-
1. Electrostatic diagnostic apparatus for an operating gas turbine engine, comprising:
-
electrostatic signal means, including a probe to be disposed in the gas stream of an engine, for providing, when said probe is disposed in the gas stream of an operating engine, a probe signal having a waveshape defined by amplitude variations thereof across a time interval of a given duration in response to electrostatic charge flowing in the gas stream in the vicinity of said probe; speed means connected for response to the rotary speed of said engine to provide a speed signal indicative thereof; signal processing means connected for response to said electrostatic signal means and to said speed means, responsive to said speed signal for providing a threshold signal indicative of a threshold amplitude as a function of the rate of change of speed of the engine, and for providing a signal indicative of the characteristics of amplitude variations in said probe signal in response to said amplitude variations exceeding said threshold amplitude. - View Dependent Claims (2)
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeUnited Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
-
Original AssigneeUnited Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
-
InventorsRosenbush, David M., Couch, Robert P.
-
Primary Examiner(s)Chin, Gary
-
Application NumberUS06/453,962Time in Patent Office1,155 DaysField of Search364/431.01, 364/431.02, 364/431.04, 364/179, 364/424, 364/551, 364/552, 364/506-508, 324/379, 324/464, 73/116, 73/117.3, 340/627, 340/683US Class Current701/100CPC Class CodesG01M 15/14 Testing gas-turbine engines...
