Abstract:
The invention relates to an automatic system for manoeuvring aircraft on the ground, based on driverless towing vehicles, (hereafter AGTV's), which can independently hold the undercarriage of the aircraft. In said system the AGTVs pull the aircraft from transfer areas on the taxiways of the runways to the stand and vice versa, allowing the propulsion systems of the aircraft to remain switched off during the taxiing process. The driverless AGTVs receive their driving jobs from a computer-aided guidance and management system which controls the AGTV fleet in a collision- and conflict-free manner.
Abstract:
The invention relates to an automatic system (1) for manoeuvring aircraft (2) on the ground, based on driverless towing vehicles, (hereafter AGTV's) (1), which can independently hold the undercarriage of the aircraft (2). In said system the AGTVs pull the aircraft from transfer areas (4) on the taxiways of the runways (3) to the stand (8) and vice versa, allowing the propulsion systems of the aircraft (2) to remain switched off during the taxiing process. The driverless AGTVs receive their driving jobs from a computer-aided guidance and management system (49) which controls the AGTV fleet (1) in a collision- and conflict-free manner.
Abstract:
The invention relates to non-corrosive auxiliary agents based on alkali fluoroaluminates, for soldering aluminium and for refining aluminium alloys, to their production and to their use. According to the invention, said non-corrosive auxiliary agents contain co-precipitated metallates. To form the metallates, metal compounds of elements in the 2 to 5 main groups of the periodic table or of elements in the sub-groups are used in the form of salts or oxides as co-reactants. In particular e.g., the halides, nitrates, carbonates, sulphates, phosphates, borates, hexafluorosilicates or oxides of said compounds are used. According to the invention, the metal compounds are introduced into the reaction mixture comprising of hydrofluoric acid, and/or alumina hydrate and/or an alkali compound. The time of the addition of the metal compound can be varied in accordance with the desired degree of functionalisation of the surface.
Abstract:
The invention relates to a method and an apparatus (8) for axial joining of a hybrid joining component (10) to a workpiece (12), wherein the joining component (10) has a thermoplastic joining section (16, 17) and a metal section (18) which can be heated, having the following steps: axial lowering of the joining component (10) onto a surface of the workpiece (12); heating of the metal section (18) such that the joining section (16, 17) at least partially melts; ending the heating of the metal section (18) such that the joining component (10) makes a force-fitting, interlocking and/or integral connection with the surface of the workpiece (12). In this case, the joining component (10) is held with a regulated. force and/or in a regulated position with respect to the workpiece (12) at least during the heating of the metal section (18), in such a manner that the joining component (10) can be joined to the surface of the workpiece (12) without any opposing support.