Some embodiments provide a core member for a composite panel that includes a hollow cell network structure, such as a honeycomb arrangement for example, and reinforced plastic strips positioned on a portion of the continuous honeycomb structure. The honeycomb structure and the solid plastic strips may be fastened together using heat and/or pressure applications. Additionally, the method for the production of the core member is provided.

A device to form a honeycomb has an upper continuous belt and a lower continuous belt disposed in parallel and carrying opposing cores. The belts act on liquid wax which is injected into an inlet of the device, with both belts moving in opposition. The inlet has in succession: a scraping zone disposed straight with respect to the upper belt; a zone for opening the cores, which has a certain curvature designed to receive a first injection of wax; and a third straight zone for sealing and expelling any excess wax. At an exit of the device, the longest length of the upper belt has multiple groups of magnetic and non-magnetic rollers for a local curving of the belt to progressively release the honeycomb.

A method for the manufacture of reinforced core composites, comprises: inserting of a pin into a foamed core material or a filled honeycomb-shaped core material, wherein the pin and the core material contain a thermoplastic polymer, or a mixture of thermoplastic polymers; the pin is heated such that as the pin is inserted the core material softens or melts at the point of insertion; and/or the core material is heated at the point of insertion such that the core material softens or melts.

Sandwich-structured noise-attenuating and/or structural panels and methods of manufacturing such panels using ultrasonic welding are described. The method includes: receiving a backing member, a sheet and a cellular structure; assembling the cellular structure between the backing member and the sheet; and ultrasonically welding the backing member and the sheet together.

A blocker door assembly for use in a gas turbine engine includes a facesheet including a plurality of openings to facilitate noise attenuation and a body portion coupled to the facesheet. The body portion includes a backsheet integrally formed with a honeycomb core, wherein the body portion is molded from a thermoplastic material.

A method for applying adhesive to sides of a flange, such as in rotorcraft connection joints, includes attaching an intermediate member to an edge of a flange and flowing adhesive in gaps between sides of the flange and inner edges of a double lap joint element by inserting the flange with the intermediate member into the double lap joint element.

A structural panel comprises phenolic skins formed over a honeycomb core. The skins are bonded to the honeycomb under vacuum and heat, providing a panel capable of forming to desired shapes. The panel is 30% lighter than aluminum honeycomb panels of similar thickness, equivalent in strength to aluminum honeycomb panels, and meets the very stringent fire, smoke and toxicity norms of the industry. Additionally the product also reduces the thermal load, has very high heat resistance and is corrosion resistant. The use of this product is not limited to flat profiles, but can also be used to mold double curved or other three dimensional profiles.

The polygonal part (1) has, on each side (C1 to C6), at least one of the following assembly elements: at least one lug (3), at least one recess (4), each of said lugs (3) and each of said recesses (4) of the part (1) having a trapezoidal shape, with in each case complementary shapes, the trapezium of each of said lugs (3) widening towards the outside of the part (1) and the trapezium of each of said recesses (4) widening towards the inside of the part (1), and each of said lugs (3) having a width, defined transversely with respect to a right bisector of the corresponding trapezium, which is greater than the width of each of said recesses (4).

The invention relates to a device for setting a setting element having a first plastic material in a component having a second plastic material, comprising a rotational advancing unit, by means of which the setting element can be rotated about an axis of rotation and simultaneously an axial force acting in the direction of the axis of rotation can be applied to the setting element in order to drive the setting element into the component, a friction welding joint thereby being produced between the setting element and the component, a differential-distance measuring apparatus for measuring the differential distance between a surface of the component and a surface of the driven setting element, and a control unit for controlling the rotational advancing unit in dependence on the measured differential distance.

A method of manufacturing a core stiffened structure includes orienting the plurality of core wafers in a non-uniform pattern onto a first face sheet, the non-uniform pattern producing non-uniform spacing between adjacent core wafers; assembling a second face sheet onto the plurality of wafers; and curing an adhesive to create a bond between the plurality of wafers, the first face sheet, and the second face sheet.