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 2702547

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 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, any number of intermediate states, in which the vent is partially open, and a closed state, in which gas is retained within the interior of the airbag.

Ce système d'atténuation de crash d'avion comprend un coussin gonflable porté par l'avion et gonflable de manière sensiblement adjacente par rapport à l'extérieur de l'avion. Le coussin gonflable comporte au moins un évent pour laisser échapper un gaz de l'intérieur du coussin gonflable. Une source de gaz est en communication fluidique avec l'intérieur du coussin gonflable pour gonfler celui-ci avec du gaz généré et délivré par la première source de gaz. Une soupape d'évent est prévue pour réguler le débit de gaz à travers chaque évent, chaque soupape d'évent pouvant être configurée de manière sélective entre un état ouvert, dans lequel le gaz quitte l'intérieur du coussin gonflable en passant par l'évent associé, un nombre quelconque d'états intermédiaires, dans lesquels l'évent est partiellement ouvert, et un état fermé, dans lequel le gaz est retenu à l'intérieur du coussin gonflable.

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