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US 8,573,354 B1Granted
Noise suppression system for hollow vehicle fasteners
AssigneeThe Boeing Company
InventorsJustin Duane Cottet, Mark Lomen Sandstrom, David Brian Christman
Life of this patent
Estimating the term…
Abstract
A method and apparatus for controlling noise. An apparatus may comprise a structure configured to be positioned at an opening for a channel. The channel may be formed at least partially within a fastener. The structure may be configured to change a movement of air within the channel to reduce noise generated by the movement of air within the channel.
Claims24
A noise reduction apparatus comprising:
- a structure configured to be positioned at an opening for a channel in which the channel is formed at least partially within a fastener and in which the structure is configured to change a movement of air within the channel to reduce noise generated by the movement of air within the channel, in which the structure has a shape at an end of the structure in which the shape is configured to disrupt a flow of air over the opening for the channel to change the movement of air within the channel such that the noise generated by the movement of air within the channel is reduced to within selected tolerances.
A method for operating a vehicle to control noise generated by the vehicle, the method comprising:
- moving the vehicle in which the vehicle has a system with a fastener connecting structures in the system to each other in which a channel having an opening is formed at least partially within the fastener, in which moving the vehicle comprises moving the vehicle such that a flow of air occurs over the opening for the channel, wherein the flow of air causes the movement of air within the channel;
- and
- changing a movement of air within the channel using a structure positioned at the opening for the channel to reduce noise generated by the movement of air within the channel, in which changing the movement of the air within the channel comprises disrupting the flow of air over the opening for the channel to reduce the movement of air within the channel such that the noise generated by the movement of air within the channel is reduced using the structure, wherein the structure has a shape configured to disrupt the flow of air over the opening for the channel.
An aircraft noise reduction system comprising:
- a pin configured to connect structures in a system in an aircraft to each other in which a channel having an opening is formed at least partially within the pin;
- in which the pin is connected to the structures in the system using a fastener system;
- in which the system is selected from one of a landing gear, a cargo bay, an engine, a control surface system, a door, a cargo door, a pivot system, and a landing gear door;
- and
- a noise reduction structure positioned at the opening for the channel and configured to change a movement of air through the channel in a manner that reduces noise generated by the movement of air through the channel to within selected tolerances such that the noise is reduced to a level below a selected level of audibility in which the noise reduction structure has a first end and a second end in which the first end is configured to be placed into the channel through the opening for the channel, in which the first end and the second end are configured to be one of fully open, partially open, and closed, and in which at least one of the first end and the second end is configured to change the movement of air through the channel in the manner that reduces the noise generated by the movement of air through the channel to within the selected tolerances by at least one of reducing a pathway for the movement of air at the opening for the channel and disrupting a flow of air over the opening for the channel;
- and in which the noise reduction structure is configured to be associated with the pin by the fastener system.
3 more elements
A method for operating an aircraft to control noise generated by the aircraft, the method comprising:
- moving the aircraft having a system with a pin connecting structures in the system to each other such that a flow of air occurs over an opening for a channel formed at least partially within the pin in which the pin is connected to the structures using a fastener system;
- and in which the system is selected from one of a landing gear, a cargo bay, an engine, a control surface system, a door, a cargo door, a pivot system, and a landing gear door;
- and
- changing a movement of air within the channel using a structure positioned at the opening for the channel to reduce noise generated by the movement of air within the channel to within selected tolerances in which the structure is configured to change the movement of air through the channel in a manner that reduces the noise generated by the movement of air through the channel to within the selected tolerances by at least one of reducing a pathway for the movement of air at the opening for the channel and disrupting the flow of air over the opening for the channel, in which the noise is reduced to within the selected tolerances such that the noise is reduced to a level below a selected level of audibility, and in which the noise reduction structure is configured to be associated with the pin by the fastener system.
1 more element
Dependencies are inferred from the claim text.