Method and apparatus for tactile cueing of aircraft controls

G - Physics – 08 – B

Patent

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G08B 23/00 (2006.01) B64C 13/10 (2006.01)

Patent

CA 2478535

A method and apparatus for tactile cueing of aircraft controls (21) is disclosed. The apparatus of the present invention warns pilots of approaching limits on certain aircraft performance parameters. The most common warnings are for rotor speed exceeding a moving limit. The present invention uses tactile cueing through the collective stick (21). Tactile cueing means that the pilot does not need to scan the intruments to ascertain proximity to the aforementioned limits. Instead, the pilot can operate the aircraft within proper limits by touch, while maintaining situational awareness outside of the cockpit (20). The method and apparatus of the present invention provides customary friction resistance up to a limit position that is continuously updated. According to the present invention, continued motion of the collective (21) in a direction beyond that limit position results in a breakout force and an increasing resistive force.

La présente invention concerne un procédé et un appareil d'avertissement tactile sur les commandes d'aéronefs (21). L'appareil de la présente invention avertit les pilotes de l'approche de limites concernant certains paramètres d'évolution de l'aéronef. Les avertissements les plus fréquentes concernent l'éventualité du dépassement de régime des rotors. On utilise en l'occurrence un retour tactile passant par le levier de pas collectif (21). Ces retours d'avertissement tactile font que le pilote n'a plus à surveiller les instruments pour confirmer l'approche des limites considérées. Au lieu de cela, le pilote peut faire évoluer l'aéronef dans les limites normales au toucher, sans détourner sa vigilance de la situation extérieure à l'habitacle (20). Le procédé et le dispositif de la présente invention créent une résistance au frottement habituelle jusqu'à une position limite qui est mise à jour en permanence. Selon la présente invention, la poursuite du mouvement du levier de pas collectif (21) dans un sens allant au-delà de la position limite produit un choc et un accroissement de la force de réaction.

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