A wide range of implementation specimen were defined, manufactured and tested with satisfying results. As such, the implementation of features like erosion protection, de-icing, lightning strike protection and bird strike protection into a morphing leading edge appear to be feasible even considering industrial manufacturing requirements. Furthermore, a detailed part and tooling design was performed employing a parametric CAD model to allow for an iterative approach together with the project partners DLR and Airbus Group Innovations. In addition a load introduction bracket for the junction of actuation kinematics and composite morphing skin was designed featuring the option to compensate for manufacturing and assembly tolerances. As a final verification of the manufacturing and tooling concept, a trial tooling was derived, produced and successfully tested. The test results provided relevant insight in effects of thermal expansion for precise bracket positioning and Overall geometrical shape. The resulting shape matched very well the allowances without undesired fibre undulations at load critical regimes of the part. The final tooling design was achieved and the tooling manufactured in full scale. The first full size leading edge will be manufactured with the large scale tooling in the near future, so that all previously mentioned factors and processes can be evaluated an the final tool. Furthermore, several morphing leading edges for subsequent large scale experimental analysis in wind tunnel, bird strike and ground based tests will be manufactured. Through the achievement of the industrial integration of multi-functional hybrid-materials in a large scale gapless droop nose, another milestone towards the application of this technology appears to be reached.
Enhanced adaptive droop nose - from computer model to multi-functional integrated part
2014
10 Seiten, Bilder, 2 Quellen
Conference paper
English
Enhanced Adaptive Droop Nose—from Computer Model to Multi-functional Integrated Part
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