Abstract:
An airfoil-shaped body having a variable outer shape, comprising: a first skin, defining a suction surface, a second skin, defining a pressure surface and connected to the first skin at least at a leading edge and/or a trailing edge of the airfoil-shaped body, at least one elongate stiffening beam, arranged inside a cavity of the airfoil-shaped body and secured to at least one of said first and second skins, the stiffening beam including at least a first and a second beam section arranged one after the other and a joining member, arranged between end portions of the beam sections and connected thereto, said joining member being adapted to allow relative movement between the beam sections by an elastic deformation; and an actuator that is operationally associated with said elongate stiffening beam, wherein, upon operating the actuator, the first beam section is moved with respect to the second beam section, or vice versa, changing the orientation of the beam sections with respect to each other, which causes a change in the variable outer shape of the airfoil-shaped body.
Abstract:
An integrated panel made of interconnected laminates comprising stacked first and second metal layers (5, 5', 5") and fibre-reinforced adhesive layers (19) between adjacent metal layers. At the location of the transition from the outer surface (7) of the first outer metal layer (5) to the outer surface (7) of the second outer metal layer (4) is located a filler (11). The panel further comprises a cladding layer (14), which comprises at least one fibre material layer (15, 24) that extends over the filler (11) and the adjacent outer surface regions (12, 13) of the outer metal layers (5, 4) located on opposite sides and which are adhered to the outer surface regions.
Abstract:
The invention concerns an aerospace structure comprising a strike layer and a capture layer and an intermediate layer there between. The structure is arranged to arrest a projectile passing through the structure.
Abstract:
The invention concerns in a first aspect a method of anodizing an article of aluminium or aluminium alloy for forming a porous anodic oxide coating, comprising the steps of -an immersion step of immersing the article to be anodized in an electrolyte in a tank, wherein the electrolyte comprises an aqueous solution of 5-50 g/l sulphuric acid and 2-50 g/l phosphoric acid, and arranging the article as an anode with respect to one or more counter electrodes as arranged cathodes in the electrolyte -an anodizing step of applying a positive anode voltage Va to the article, while the temperature of the electrolyte is in the range of 33-60 °C.
Abstract:
A method for the production of a panel (1) from a laminate that comprises at least two metal layers (2) and an intermediate layer (3) consisting of an adhesive material, comprising the following steps: provision of a mould (4) for the panel (1), placing a pack (5, 6) of alternating layers of metal (2) and adhesive material (3) in the mould, making at least one hole (11) through the pack (5, 6), placing a fixing means (16) in each hole (11), subjecting the pack (5, 6) to elevated pressure, activating the adhesive material (3), removing the panel (1) from the mould (4), removing each fixing means (16).
Abstract:
A method for producing a shaped part from at least one prefabricated laminate which has at least two metal layers and at least one plastic layer between them comprises the steps of; - providing at least one prefabricated, hardened laminate, - heating the said laminate, - deforming the heated laminate in order to create a shaped part, - cooling the shaped part.
Abstract:
The invention relates to an apparatus for ultrasonic inspection of a multi-layered, ML, plate with a stiffener attached on a first surface of the ML plate. The apparatus includes a transmitter directing a first ultrasonic beam along a first guiding medium to the ML plate, along a first axis at an angle to the first surface, the first axis being within a transmission angle with respect to a first normal perpendicular to the first surface, and a receiver for receiving a transmitted ultrasonic beam originating from the first beam after passing through the ML plate along a second axis of a second guiding medium for directing the transmitted beam. The apparatus is configured for setting the transmission angle of the first axis of the first beam to let the second axis pass through a location beneath the stiffener beneath the first surface to which said stiffener is attached.
Abstract:
The present invention relates to a variable gap cover for an aircraft, mould assembly for forming such a cover and a method for manufacturing a variable gap cover. The gap is present between a first vehicle part and a second vehicle part which are movable with respect to each other between a first position and a second position and have a gap between them. The variable gap cover is of a single piece laminated composite structure wherein multiple fibre layers are embedded in a continuous polymer matrix. The variable gap cover comprises: a first rigid attachment plate section adapted to be attached to the first vehicle part, and a second rigid attachment plate section adapted be attached to the second vehicle part, wherein the first and second rigid attachment plate sections jointly form an aerodynamic contour over the gap, at least in the first position of the vehicle parts. The variable gap cover further comprises a flexible sheet section provided between and formed integral with the first and second attachment plate section.
Abstract:
An airplane wing comprises a main wing and a flap system that has a flap at the trailing edge of the main wing. An elongate flap track member is connected to the main wing in such a manner that it can be moved substantially in its longitudinal direction and is guided by supporting bearing elements relative to the main wing between a forward retracted position and a rearward extended position. The flap is rotatably connected to the rear end of the flap track member in such a manner that it can rotate about a rotation axis that extends substantially parallel to the trailing edge of the main wing,so that the flap moves together with the flap track member when the flap track member is moved and so that the flap can be rotated about the rotation axis mechanically independently of the movement of the flap track member. The flap system comprises an actuator system having two actuators. The first actuator is connected to the main wing and has an engagement member that engages the flap or the flap track member for moving the flap together with the flap track member so that the flap track member is move able between its retracted position and its extended position. The second actuator is connected to the flap track member so that the second actuator moves together with the flap track member when the flap track member is moved by means of the first actuator. The second actuator has an engagement member that engages the flap for rotating the flap about the rotation axis.
Abstract:
A joint construction in a laminate of, alternately, at least two metal layers (1-3) and at least one plastic layer (6,7) accomodated between them comprises metal layers which have at least two sections (4',5',-4''',5'''). The two sections of at least one outer metal layer (4',5') overlap one another and are fixed to one another at the location of the overlap (8) by means of an adhesive (12). Each metal layer (1-3) has overlapping sections (8-10) which are fixed to one another by an adhesive (12).