Method and system for reducing engine induced vibration amplitudes in an aircraft fuselage
First Claim
1. In an aircraft having a fuselage, right and left wings mounted to said fuselage, ailerons mounted on said right and left wings and actuated by respective actuators, and engines mounted by pylons respectively to said right and left wings, an improvement comprising a system for reducing vibrations induced in said fuselage by operating dynamics of said engines, wherein said system comprises:
- a controller including a computer processor;
at least one sensor mounted in or on at least one of said engines or at a forwardmost connection between one of said engines and an associated one of said pylons;
at least one sensor signal conductor line connecting said at least one sensor to said controller; and
at least one control signal conductor line connecting said controller to at least one of said actuators;
wherein said controller generates at least one control signal in response to and dependent on at least one sensor signal provided by said at least one sensor via said at least one sensor signal conductor line, and said at least one control signal is provided via said at least one control signal conductor line to said at least one actuator to control an actuation of said at least one actuator.
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Abstract
Vertical and/or lateral acceleration sensors are mounted in or on the engines or pylons of an aircraft to measure the vibrations induced by the operating dynamics of the engines. The sensors provide measured vibration signals to a controller that generates control signals in response to and dependent on the measured vibration signals. The control signals are provided to the aileron actuators, so as to actuate the ailerons appropriately to counteract and thereby reduce the engine-induced vibrations. Thus, the engine-induced vibrations acting on the fuselage are diminished and the passenger flight comfort is significantly improved.
20 Citations
20 Claims
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1. In an aircraft having a fuselage, right and left wings mounted to said fuselage, ailerons mounted on said right and left wings and actuated by respective actuators, and engines mounted by pylons respectively to said right and left wings,
an improvement comprising a system for reducing vibrations induced in said fuselage by operating dynamics of said engines, wherein said system comprises: -
a controller including a computer processor;
at least one sensor mounted in or on at least one of said engines or at a forwardmost connection between one of said engines and an associated one of said pylons;
at least one sensor signal conductor line connecting said at least one sensor to said controller; and
at least one control signal conductor line connecting said controller to at least one of said actuators;
wherein said controller generates at least one control signal in response to and dependent on at least one sensor signal provided by said at least one sensor via said at least one sensor signal conductor line, and said at least one control signal is provided via said at least one control signal conductor line to said at least one actuator to control an actuation of said at least one actuator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of reducing an amplitude of vibrations induced in a fuselage of an aircraft by operating dynamics of engines of said aircraft, comprising the steps:
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a) sensing a vibrational acceleration in or on at least one of said engines or on a forwardmost connection between one of said engines and a pylon mounting said one of said engines to a wing of said aircraft, and providing a first sensed acceleration signal corresponding to said vibrational acceleration;
b) executing at least one regulation rule to generate a first control signal responsive to and dependent on said first sensed acceleration signal; and
c) actuating at least one aileron on said wing of said aircraft responsive to and dependent on said first control signal so as to at least partially counteract said vibrational acceleration. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification