Adaptive electrostatic engine diagnostics

Details Adaptive electrostatic engine diagnostics Adaptive electrostatic engine diagnostics

1982-12-28

1986-03-25

Chin, Gary

Boots, shoes, and leggings

364551, 73116, G01M 1500

Patent

active

045787565

ABSTRACT:
Equipment which analyzes the wave shapes (FIGS. 57-80) of signals derived from electrostatic probes (1, 2, 3, 27) disposed in the gas stream of a gas turbine engine operates differently in dependence upon different engine conditions. When surge is detected (1, 90-93, FIG. 1) the signal records are stored away specially (FIGS. 8 and 8b) and classified specially (FIGS. 8c, 9, 9a and 9b) when a request therefor (93-95, FIG. 1) is made. Acceleration signals (FIG. 80) are looked for (FIG. 12) only when there is significant engine acceleration (FIG. 4). Only nozzle liner erosion (FIG. 69) is looked for (FIG. 12) when the afterburner is lit (89, FIG. 1), in one probe (3, FIG. 1) while at the same time afterburner rumble (FIG. 80) is looked for in a flameholder probe (27, FIG. 1) when the afterburner is lit. When the afterburner fuel is being chopped (FIG. 4a) only afterburner chop signals (FIGS. 77-79) are looked for (FIG. 12). When the engine speed is below idle, no records of signals are made (FIG. 8).

REFERENCES:
patent: 3731070 (1973-05-01), Urban
patent: 4215412 (1980-07-01), Bernier et al.
patent: 4249238 (1981-02-01), Spang, III et al.
patent: 4280185 (1981-07-01), Martin
patent: 4335600 (1982-06-01), Wu et al.
patent: 4394742 (1983-07-01), Crummer et al.
patent: 4418388 (1983-11-01), Allgor et al.
patent: 4456883 (1984-06-01), Bullis et al.

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