Emitted ion surge/stall detection

Details Emitted ion surge/stall detection Emitted ion surge/stall detection

1982-12-28

1985-02-19

Caldwell, Sr., John W.

Measuring and testing

Test stand

For engine

60 3903, G01M 1500

Patent

active

044997558

ABSTRACT:
Ions are emitted (14) into the gas stream (15) of a gas turbine engine at a point with respect to the gas stream (15), in comparison with the position of an ion-responsive electrostatic probe (24), so that there is a discernible, reliable difference in the ion impingement on the electrostatic probe (24) during normal gas flow (FIGS. 3 and 4) in contrast with that which occurs during the abnormal gas flow attendant a surge (FIG. 5) thereby to provide early and sustained detection of stall and/or surge conditions in the engine, even in the absence of flame from the combustor (17).

REFERENCES:
patent: 3426322 (1969-02-01), Balo
patent: 4103544 (1978-08-01), Beckmann
patent: 4359893 (1982-11-01), Kizler

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