초록 ▼

Aircraft cabin noise and engine vibration are monitored at selected cabin and engine locations (51a/51b), respectively. An optimizing equation uses aircraft cabin noise information to separately determine for each engine a balance solution (60) that minimizes aircraft cabin noise at the selected cab

Aircraft cabin noise and engine vibration are monitored at selected cabin and engine locations (51a/51b), respectively. An optimizing equation uses aircraft cabin noise information to separately determine for each engine a balance solution (60) that minimizes aircraft cabin noise at the selected cabin locations over the engine RPM range of interest. Next, the balance solutions are used to predict the engine vibration levels (63) that will be produced if the balanced solution is implemented. Then a test (65) is made to determine if the predicted engine vibration levels are acceptable, i.e., below a predetermined level. If acceptable, the balance solutions are used to select balance weights suitable for the engines being balanced (66) and the result displayed (67) for implementation by engine maintenance personnel. If the predicted vibration level is unacceptable, a new balance solution is determined for each engine (68) using the optimizing equation constrained by the allowable vibration level.

대표청구항 ▼

An apparatus for determining the corrective weight to be added to the low-speed rotating systems of the jet engines powering an aircraft to minimize the noise in the cabin of the aircraft created by an imbalance of the low-speed rotating systems of the jet engines, said apparatus comprising: a monit

An apparatus for determining the corrective weight to be added to the low-speed rotating systems of the jet engines powering an aircraft to minimize the noise in the cabin of the aircraft created by an imbalance of the low-speed rotating systems of the jet engines, said apparatus comprising: a monitoring system including noise sensors for monitoring the noise in the cabin of the aircraft to produce monitored cabin noise data that describes the noise in the cabin of the aircraft created by the vibration of the jet engines powering the aircraft produced by the imbalance of the low-speed rotating systems of the jet engines; and a calculating system coupled to said monitoring system for receiving the monitored cabin noise data and using the monitored cabin noise data to determine a balance solution for each jet engine that defines the angular position and corrective balance weights to be added to the low-speed rotating system of the jet engine to minimize the noise in the cabin of the aircraft created by the vibration of the jet engine produced by the imbalance of the low-speed rotating systems of the jet engine.