Airbus Helicopters

Eurocopter

Airbus Helicopters Deutschland Gmbh

Julien Guitton

Thomas Pierre Manfredotti

Paul Cranga

Ambrosius Weiss

Jean Azeau

Anne-Claire Chapuis-Desplanques

Rodolphe Lhermenault

Thomas Meyer

A vibration filter mechanism between a fuselage and a piece of equipment of the aircraft. The filter mechanism comprises a pair of filter members, each secured with a first structure that is to be connected to the fuselage and with a second structure of the piece of equipment. Each filter member is secured with the first structure via a first pivot type connection having one degree of freedom to move in rotation and with the second structure via a second pivot type connection having one degree of freedom to move in rotation. The filter mechanism includes resilient return means for deforming during relative movement in rotation between at least one of the filter members and the first structure. The resilient return means presents a predetermined stiffness suitable for generating a return force opposing the relative movement in rotation between at least one of the filter members and the first structure.

Vibration filter mechanism for arranging between a piece of equipment and an aircraft fuselage, and a seat fitted with such a mechanism

An aircraft () provided with a tail boom () including a tail plane () provided with an airfoil surface (), the airfoil surface () being provided with at least one stabilizer portion () extending laterally outside the tail boom () and with a central portion () extending inside the tail boom (), said stabilizer portion () being implanted in an orifice () of the tail boom () that is defined by a peripheral wall ('), clearance () existing between said stabilizer portion () and said peripheral wall (). The aircraft includes combating means () for combating the flutter phenomenon, which means are provided with stiffener means () exerting predetermined compressive stress on said stabilizer portion (), said stiffener means () being arranged at the root of the stabilizer portion ().

Aircraft provided with a tail plane including means for combating flutter

A blade () extending longitudinally from a root () of the blade () to a free end () of the blade (), the blade () having a resonator () incorporated therein to reduce the drag movements (F, F) of the blade (), the resonator () being provided with a solid and movable heavy element () and with resilient retaining element () secured to the heavy element () and to the blade (). Furthermore, the resonator () includes guide element () in which the heavy element () is capable of oscillating (F', F&#x2032;) longitudinally, the guide element () being arranged in a longitudinal direction (D) of the blade.

Blade for reducing the drag movements of said blade, and a method of reducing such a drag movement

Described is a blade () extending longitudinally from a root () of the blade () to a free end () of the blade (), the blade () being provided with an incorporated resonator () for reducing the drag movements (F, F) of the blade (), the resonator () being provided with a closed tank () that is partially filled with a liquid (). Furthermore, the resonator () includes a central tube () immersed inside the tank (), the tank () and the central tube () being arranged in a longitudinal direction (Y) of the blade (), the central tube () having first and second ends () that communicate with the tank () so that the liquid () can move from the tank () into the central tube (), and vice versa.

Growing community of inventors

Chateauneuf Les Martigues, France

Julien Guitton