System for operating gas turbine jet engine with fan damage
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Dec 17, 1991
Issued Date -
N/A
app pub date -
Jul 17, 1990
filing date -
Feb 27, 1989
priority date (Note) -
Expired
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Abstract
Normal high load operation automatically varies nozzle area to maintain an optimum engine pressure ratio (EPR). An error signal representing fan damage is established by comparing the actual EPR to the predicted EPR. Compressor stalls are also monitored. In response to these signals a minimum nozzle area is set and modified. Automatic operation to hold EPR and afterburning is inhibited. Further signals representing satisfactory operation may reset the inhibiting action.
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