Aero-acoustic optimisation method for complex-section mechanical parts and corresponding mechanical part and landing gear
First Claim
1. An aero-acoustic optimization method for a mechanical metal part structure extending longitudinally along a longitudinal axis and that can be placed in an airflow, the metal part structure having a longitudinal groove extending parallel to the longitudinal axis and a transverse cross-section perpendicular to the longitudinal axis, the method comprising:
- arranging at least two supports such that each support is positioned about the longitudinal axis of the metal part structure, each support having an external contour and an internal contour, the internal contours mated at least partially against the transverse cross-section of the metal part structure, and such that the at least two supports are arranged offset from each other in a direction of the longitudinal axis; and
aerodynamically enveloping the metal part structure with an aerodynamic envelope attached to the at least two supports and including a cover having an external cylindrical face and an internal face that presses against the external contours of the at least two supports, and the cover is attached to the at least two supports using fixed connectors, such that the cover transversely envelops the at least two supports and at least a portion of the longitudinal groove from the airflow.
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Accused Products
Abstract
An apparatus and method are provided for reducing the drag caused by a complex-section part in an airflow, for example the landing gear of an aircraft, making it possible to optimize the lift/drag ratio and to reduce the aerodynamic noise by reducing the local noise source. To do so, the complex-section part is masked with a special casing. More specifically, the aero-acoustically optimized complex-section metal mechanical part is fitted with an aerodynamically shaped cover made of several longitudinal parts articulated with hinges to facilitate their installation. This cover is attached to at least two supports placed away from one another along the axis of the part, each support locally mating with the section of the part.
14 Citations
15 Claims
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1. An aero-acoustic optimization method for a mechanical metal part structure extending longitudinally along a longitudinal axis and that can be placed in an airflow, the metal part structure having a longitudinal groove extending parallel to the longitudinal axis and a transverse cross-section perpendicular to the longitudinal axis, the method comprising:
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arranging at least two supports such that each support is positioned about the longitudinal axis of the metal part structure, each support having an external contour and an internal contour, the internal contours mated at least partially against the transverse cross-section of the metal part structure, and such that the at least two supports are arranged offset from each other in a direction of the longitudinal axis; and aerodynamically enveloping the metal part structure with an aerodynamic envelope attached to the at least two supports and including a cover having an external cylindrical face and an internal face that presses against the external contours of the at least two supports, and the cover is attached to the at least two supports using fixed connectors, such that the cover transversely envelops the at least two supports and at least a portion of the longitudinal groove from the airflow. - View Dependent Claims (2, 3, 4)
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5. A mechanical part that is aero-acoustically optimized for placement in an airflow, the mechanical part comprising:
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a metal part structure extending longitudinally along a longitudinal axis, the metal part structure having a longitudinal groove extending parallel to the longitudinal axis and a transverse cross-section perpendicular to the longitudinal axis, at least two supports, each support positioned about the longitudinal axis and having an external contour and an internal contour, the internal contour at least partially mated against the transverse cross-section of the part structure, wherein the at least two supports are arranged offset from each other in a direction of the longitudinal axis, and an aerodynamic envelope attached to the at least two supports and including a cover having an external cylindrical face and an internal face that presses against the external contours of the at least two supports, and the cover is attached to the at least two supports using fixing connectors such that the cover transversely envelops the at least two supports and at least a portion of the longitudinal groove from the airflow. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification