PROCÉDÉ PERMETTANT DE TESTER LE FONCTIONNEMENT D'UNE UNITÉ D'ARRÊT POUR LE VERROUILLAGE D'UNE PARTIE D'EXTRÉMITÉ D'AILE PLIABLE DANS UNE POSITION ÉTENDUE

摘要

Disclosed is a method for testing operation of an arresting unit (15) for locking a foldable wing tip portion (11) of a wing (5) for an aircraft (1) in an extended position. The object, to increase safety of the aircraft during flight, is achieved by the following steps:- Providing a wing (5) for an aircraft (1), the wing (5) comprisinga fixed wing (9),a foldable wing tip portion (11) mounted to the fixed wing (9) pivotally between an extended position and a folded position,an actuation unit (13) for actuating movement of the foldable wing tip portion (11), andan arresting unit (15) for locking the foldable wing tip portion (11),- Locking the foldable wing tip portion (11) in the extended position by the arresting unit (15),- Controlling the actuation unit (13) to move the foldable wing tip portion (11) in the direction towards the folded position, such that the foldable wing tip portion (11) urges against the arresting unit (15) with a predefined test load,- Detecting deformation of the arresting unit (15) during or after application of the test load, and- Comparing the detected deformation to a predefined threshold deformation.