Airbus Deutschland Gmbh

Eads Deutschland Gmbh

Daimlerchrysler Aerospace Airbus Gmbh

Ulf Breuer

Peter Jaenker

Barnaby Law

Thomas Lorkowski

Jochen Mueller

This invention relates to an adhesive joint for joining components of transport craft, in particular of aircraft, wherein the adhesive joint is formed by an adhesive means. According to the invention, the adhesive means has several functional elements with actuatory and/or sensory properties, in particular for enabling a minimum mechanical load capacity of the adhesive joint and/or detecting a mechanical loading state in the adhesive joint. Due to the presence of functional elements integrated in the adhesive joint direct and simple testing of the mechanical load capacity of the adhesive joint is possible without costly external test structures, e.g. in the form of measuring and testing systems for conducting tensile load tests or the like. Moreover, mechanical stress states in the adhesive joint can be detected. Moreover, the invention relates to a method for determining a minimum mechanical load capacity and/or mechanical strength of an adhesive joint.

Adhesive joint for joining components of transport craft, in particular of aircraft, and method for determining minimum mechanical load capacity and/or mechanical strength of an adhesive joint

The invention relates to a linear, hydraulic pivot drive, especially for the flap control system of aerodynamic structures. Said pivot drive comprises a housing provided with ports for introducing a hydraulic medium, a piston which is arranged inside the housing and can be axially displaced by the effect of the hydraulic medium, and an output shaft which is provided with coarse threads and interacts with the piston in order to cover the axial displacement of the piston into a rotational movement. The invention is characterized in that the output shaft is integrated into the piston, the coarse threads running in the same direction and engaging in the piston, and the cross-section of the piston has a spline profile for effectively preventing a rotational movement of the piston.

Linear, hydraulic pivot drive

A method for fabricating a stringer-stiffened shell structure using fiber composite materials involves the following steps. A fiber reinforced skin member having a specified surface curvature is laid onto a correspondingly curved mold surface of a shell mold. Stringer core blanks are cut from a cured plate of fiber composite material, whereby each blank has a narrow edge with a curvature matching the curvature of the skin member. These stiff pre-cut blanks are arranged extending along and vertically protruding from the skin member, with the narrow edges of the blanks lying in contact along the skin surface. An auxiliary frame is placed around the perimeter of the shell mold, and the ends of the stringer core blanks are received in slots in the frame to hold the blanks in proper positions. Then, stiffening profile members are laid lengthwise along and against the stringer core blanks and the adjoining areas of the skin member, whereby these profile members are made of uncured fiber composite material so that they are easily deformable along the skin member and the stringer core blanks. The assembled structure is pressurized and cured so as to integrally bond the components to each other and fully cure and harden all of the components. A stiffening stringer of the finished structure is formed by a respective stringer core blank sandwiched between two adjoining stiffening profile members.

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Grasberg, Germany

Ulf Breuer