Method and device for providing automatic load alleviation...

B - Operations – Transporting – 64 – C

Patent

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Details

B64C 13/24 (2006.01) B64D 45/00 (2006.01) G05D 1/00 (2006.01)

Patent

CA 2628531

Described are a method and a device for providing automatic load alleviation to a high lift surface system, in particular to a landing flap system, of an aircraft when a blockage occurs, wherein in response to a control signal emitted by a control device (31, 32, 35) at least one high lift surface (11, 12, 21), which is actuated by means of a local mechanical final control element (16, 26), is brought to a predetermined position by a central drive unit (13, 23) that is connected by way of a rotary shaft arrangement (15, 25) to the local final control element (16, 26) by means of generating a torque transmitted by the central drive unit (13, 23) to the rotary shaft arrangement (15, 25). According to the invention, if a signal is registered that indicates that there is a blockage within the high lift surface system, the torque transmitted by the central drive unit (13, 23) to the rotary shaft arrangement (15, 25) is automatically reduced to a predetermined low torque value, and the position of the high lift surface system is fixed.

La présente invention concerne un procédé et un dispositif destinés à fournir une atténuation automatique des charges à un système de surface hypersustentateur, en particulier à un système de volets hypersustentateurs d~un aéronef lorsqu~un blocage survient, dans lesquels, en réaction à un signal de commande émis par un dispositif de commande (31, 32, 35), au moins une surface d~hypersustentation (11, 12, 21) actionnée au moyen d~un élément de commande finale mécanique local (16, 26) est amenée dans une position prédéterminée par une boîte de commande centrale (13, 23) connectée grâce à un mécanisme d~arbre rotatif (15, 25) à l~élément de commande finale local (16, 26) au moyen d~un couple générateur transmis par la boîte de commande centrale (13, 23) au mécanisme d~arbre rotatif (15, 25). Selon la présente invention, si un signal indiquant un blocage dans le système de surface hypersustentateur est enregistré, le couple transmis par la boîte de commande centrale (13, 23) au mécanisme d~arbre rotatif (15, 25) est automatiquement réduit à une tension de serrage faible prédéterminée et la position du système de surface hypersustentateur est fixée.

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