초록 ▼

Devices and methods useful for balancing high-pressure spools of gas turbine engines are disclosed. An exemplary device may comprise: an input shaft configured to be coupled to an output of an accessory gear box driven by a high-pressure spool of a gas turbine engine; a first trigger rotatably coupl

Devices and methods useful for balancing high-pressure spools of gas turbine engines are disclosed. An exemplary device may comprise: an input shaft configured to be coupled to an output of an accessory gear box driven by a high-pressure spool of a gas turbine engine; a first trigger rotatably coupled to the input shaft at a first speed ratio; and a sensor configured to detect the trigger at each revolution of the trigger. The first speed ratio may permit a rotational speed of the first trigger to be substantially the same as a rotational speed of the high-pressure spool. Upon detection of the trigger, the sensor may generate one or more signals representative of each associated revolution of the high-pressure spool of the gas turbine engine.

대표청구항 ▼

1. A method useful in balancing a high-pressure spool of a gas turbine engine, the method comprising: generating one or more vibration signals representative of vibration of the high-pressure spool during operation of the gas turbine engine;using an output of an accessory gear box driven by the high

1. A method useful in balancing a high-pressure spool of a gas turbine engine, the method comprising: generating one or more vibration signals representative of vibration of the high-pressure spool during operation of the gas turbine engine;using an output of an accessory gear box driven by the high-pressure spool during operation of the gas turbine engine, generating once-per-revolution signals representative of respective revolutions of the high-pressure spool; andusing the one or more vibration signals and the once-per-revolution signals, determining a balancing solution for the high-pressure spool;determining a correlation between the once-per-revolution signals and an angular position of the high-pressure pool; andusing the correlation and the balancing solution to balance the high-pressure spool. 2. The method as defined in claim 1, wherein generating the once-per-revolution signals comprises converting a rotational speed of the output of the accessory gearbox to a rotational speed substantially identical to that of the high-pressure spool. 3. The method as defined in claim 1, wherein generating the once-per-revolution signals comprises detecting a trigger having substantially the same rotational speed as that of the high-pressure spool. 4. The method as defined in claim 3, wherein determining a correlation between the once-per-revolution signals and the angular position of the high-pressure spool comprises correlating an angular position of the trigger with the angular position of the high-pressure spool. 5. The method as defined in claim 1, wherein the once-per-revolution signals are based on the detection of a single trigger having substantially the same rotational speed as that of the high-pressure spool. 6. The method as defined in claim 1, comprising correlating the one or more vibration signals with the one or more once-per-revolution signals based on a common time scale. 7. The method as defined in claim 1, comprising using a first correlation between the one or more vibration signals and the once-per-revolution signals and a second correlation between the once-per-revolution signals and angular positioning of the high-pressure spool to balance the high-pressure spool. 8. The method as defined in claim 7, wherein the balancing solution is representative of a correction weight and an associated angular position on the high-pressure spool. 9. The method as defined in claim 1, comprising: driving a first rotatable trigger using the output of the accessory gear box at a first speed ratio;driving a second rotatable trigger using the output of the accessory gear box at a second speed ratio; andgenerating the once-per-revolution signals based on the detection of one of the first rotatable trigger and the second rotatable trigger. 10. The method as defined in claim 9, wherein: the first speed ratio is configured to permit a rotational speed of the first trigger to be substantially identical to a rotational speed of the high-pressure spool; andthe second speed ratio is configured to permit a rotational speed of the second trigger to be substantially identical to a rotational speed of a high-pressure spool of another gas turbine engine when used with the other gas turbine engine.