Patent ID: 11897612
Assignee: AIRBUS OPERATIONS LIMITED
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 10:
11. A hold-down arrangement for a wing of an aircraft, the wing comprising a fixed wing and a high-lift device, wherein the wing has a leading edge extending along a spanwise direction of the fixed wing and an upper surface forming a suction side of the fixed wing and wherein the high-lift device is movable between a retracted position and a deployed position and attached to the leading edge of the fixed wing via a first support and a second support, wherein the first support is spaced apart from the second support in the spanwise direction and wherein in the retracted position a trailing edge of the high-lift device is in extended contact with the upper surface of the fixed wing,
wherein the hold-down arrangement comprises a first hold-down element attachable to the high-lift device of the wing and a second hold-down element attachable to the fixed wing of the wing such that the first hold-down element is in contact with the second hold-down element when the high-lift device is in the retracted position but is not in contact with the second hold-down element when the high-lift device is in the deployed position, that the hold-down arrangement is arranged between the first support and the second support of the wing and that in the retracted position of the high-lift device the hold-down arrangement prevents the trailing edge of the high-lift device from detaching from the upper surface of the fixed wing when the fixed wing deforms in the spanwise direction,
wherein one of the first hold-down element and the second hold-down element is a load-limited hold-down element comprising an elastically deformable biasing means and the other of the first hold-down element and the second hold-down element is a rigid hold-down element,
wherein the hold-down arrangement is configured such that when the wing is in a first operating mode in which the high-lift device is in the retracted position and a load transmitted through the hold-down arrangement for preventing the trailing edge of the high-lift device from detaching from the upper surface of the fixed wing does not exceed an operational threshold, the biasing means of the load-limited hold-down element acts onto the rigid hold-down element to prevent the trailing edge of the high-lift device from detaching from the upper surface of the fixed wing,
wherein the hold-down arrangement is further configured such that when the wing is in a second operating mode in which the high-lift device is in the retracted position and the load transmitted through the hold-down arrangement for preventing the trailing edge of the high-lift device from detaching from the upper surface of the fixed wing reaches and exceeds the operational threshold, elastic deformation of the biasing means results in the biasing means not further acting onto the rigid hold-down element for preventing the trailing edge of the high-lift device from detaching from the upper surface of the fixed wing,
wherein the load-limited hold-down element extends from a fixed end to a free end in an extension direction when the load-limited hold-down element is not in contact with the rigid hold-down element,
wherein the fixed end of the load-limited hold-down element is attached at an attachment point to the fixed wing in case the second hold-down element is the load-limited hold-down element or is attached an attachment point to the high-life device in case the first hold-down element is the load-limited hold-down element,
wherein the hold-down arrangement is configured such that when the wing is in the first operating mode, the free end of the load-limited hold-down element interacts with a contact surface of the rigid hold-down element, the contact surface being tilted relative to the extension direction of the load-limited hold-down element at an angle of less than 90°, and
wherein the hold-down arrangement is further configured such that when the wing is in the second operation mode, the free end of the load-limited hold-down element does not interact with the rigid hold-down element or interacts with a glide surface of the rigid hold-down element extending perpendicular to the extension direction of the load-limited hold-down arrangement.