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This open access book presents technologies and methods of lightweight system design to support future low-emission aviation in achieving climate targets. It will be shown how reduction of weight and aerodynamic drag affects the energy consumption of commercial aircraft and what characterizes lightweight system design. Methods, design principles, production technologies and options for functional integration are available for more energy-efficient aircraft. Research results from the last decade are presented, which are intended to encourage the reader to further research and, above all, to implement them in future aircraft. The Author Prof. Dr.-Ing. Martin Wiedemann heads the DLR Institute of Lightweight Systems and helds a professorship for Adaptive Systems at the Technical University of Braunschweig. He combines his experience from 15 years in the aviation industry with his research expertise in the field of lightweight system design, acombination of lightweight composite structures and function integration. Martin Wiedemann is board member in the Cluster of Excellence "Sustainable and Energy Efficient Aviation - SE2A" at the Technical University of Braunschweig and board member in the German wind energy research association. He is co-leader of the DLR Alliance for Lightweight Production Technologies and member of the German CFRP Fuselage Forum, a DLR cooperation with Airbus.

Aerospace engineering. --- Astronautics. --- Materials. --- Sustainability. --- Aerospace Technology and Astronautics. --- Materials Engineering.

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Polymer composites offer the possibility for functional integration since the material is produced simultaneously with the product. The efficiency of composite structures raises through functional integration. The specific production processes of composites offer the possibility to improve and to integrate more functions thus making the structure more valuable. Passive functions can be improved by combination of different materials from nano to macro scale, i.e. strength, toughness, bearing strength, compression after impact properties or production tolerances.  Active functions can be realized by smart materials, i.e. morphing, active vibration control, active structure acoustic control or structure health monitoring. The basis is a comprehensive understanding of materials, simulation, design methods, production technologies and adaptronics. These disciplines together deliver advanced lightweight solutions for applications ranging from mechanical engineering to vehicles, airframe and space structures along the complete process chain. The book provides basics as well as inspiring ideas for engineers working in the field of adaptive, tolerant and robust composite structures.

Fibrous composites. --- Polymeric composites. --- Mechanical Engineering --- Engineering & Applied Sciences --- Aeronautics Engineering & Astronautics --- Composite materials. --- Smart materials. --- Adaptive materials --- Intelligent materials --- Sense-able materials --- Engineering. --- Vibration. --- Dynamical systems. --- Dynamics. --- Aerospace engineering. --- Astronautics. --- Structural materials. --- Aerospace Technology and Astronautics. --- Ceramics, Glass, Composites, Natural Methods. --- Vibration, Dynamical Systems, Control. --- Structural Materials. --- Materials --- Composites (Materials) --- Multiphase materials --- Reinforced solids --- Solids, Reinforced --- Two phase materials --- Materials. --- Ceramics, Glass, Composites, Natural Materials. --- Engineering --- Engineering materials --- Industrial materials --- Engineering design --- Manufacturing processes --- Cycles --- Mechanics --- Sound --- Space sciences --- Aeronautics --- Astrodynamics --- Space flight --- Space vehicles --- Ceramics. --- Glass. --- Composites (Materials). --- Architectural materials --- Architecture --- Building --- Building supplies --- Buildings --- Construction materials --- Structural materials --- Dynamical systems --- Kinetics --- Mathematics --- Mechanics, Analytic --- Force and energy --- Physics --- Statics --- Amorphous substances --- Ceramics --- Glazing --- Ceramic technology --- Industrial ceramics --- Keramics --- Building materials --- Chemistry, Technical --- Clay --- Aeronautical engineering --- Astronautics

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