Crash attenuation system for aircraft

B - Operations – Transporting – 64 – D

Patent

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Details

B64D 25/00 (2006.01) B64D 45/00 (2006.01)

Patent

CA 2628380

A crash attenuation system for an aircraft, the system having an airbag carried by the aircraft and inflatable generally adjacent an exterior of the aircraft. The airbag has at least one vent for releasing gas from the interior of the airbag. A first gas source is in fluid communication with the interior of the airbag for inflating the airbag with gas generated provided by the first gas source. A vent valve is provided for controlling a flow of gas through each vent, each vent valve being selectively configurable between an open state, in which gas can pass through the associated vent from the interior of the airbag, and a closed state, in which gas is retained within the interior of the airbag. A second gas source is provided for at least partially re-inflating the airbag after venting of gas through the at least one vent.

L'invention concerne un système d'atténuation d'impact pour aéronef, le système possédant un airbag transporté par l'aéronef et gonflable, généralement adjacent à un côté externe de l'aéronef. L'airbag possède au moins un évent pour libérer le gaz de l'intérieur de l'airbag. Une première source de gaz est en communication fluide avec l'intérieur de l'airbag servant à gonfler l'airbag avec le gaz généré par la première source de gaz. Une valve à évent est conçue pour réguler le flux de gaz à travers chaque évent, chaque valve à évent étant configurable de manière sélective entre une position d'ouverture, dans laquelle le gaz peut passer à travers l'évent associé à partir de l'intérieur de l'airbag, et une position de fermeture, dans laquelle le gaz est conservé à l'intérieur de l'airbag. Une seconde source de gaz est conçue pour au moins partiellement regonfler l'airbag après l'écoulement du gaz à travers ledit ou lesdits évents.

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