Sökning: "Flyg- och rymdteknik"
Visar resultat 16 - 20 av 25 avhandlingar innehållade orden Flyg- och rymdteknik.
16. Contributions to Variable Fidelity MDO Framework for Collaborative and Integrated Aircraft Design
Sammanfattning : The thesis develops computational tools for early stages of the aircraft design process. The work focuses on a framework which allows several design teams concurrently to develop a baseline concept into a configuration which meets requirements and whose aerodynamics has been assessed by flight simulation. LÄS MER
17. Lightweight multifunctional composites : An investigation into ion-inserted carbon fibres for structural energy storage, shape-morphing, energy harvesting & strain-sensing
Sammanfattning : The transport sector accounts for around 26% of all greenhouse gas emissions in the European Union and United Kingdom. By reducing the mass of vehicles it is possible to reduce these emissions substantially.One way to reduce vehicle mass is to use multifunctional structures. LÄS MER
18. Towards defect free forming of multi-stacked composite aerospace components using tailored interlayer properties
Sammanfattning : Use of lightweight materials is an important part of reduction of fuel consumption by commercial aircraft. A considerable number of structural aircraft parts are therefore built of thin layers of epoxy pre-impregnated carbon fibres stacked to laminates. LÄS MER
19. Exploring structural carbon fiber composites for mass-less energy and actuation
Sammanfattning : The energy consumption in transport is today a large contributor to global greenhouse emissions. One way of reducing these emissions is by electrification, which is an ongoing journey for the vehicle industry. The aeronautical industry has started investigations but are limited by the relatively low specific energy of batteries. LÄS MER
20. Static and fatigue analyses of welded steel structures : some aspects towards lightweight design
Sammanfattning : The objectives of this thesis comprise of overcoming the challenges in designing lightweight welded structures such as material selection, choice of fatigue design methods, and increased performance by using improvement techniques. Material selection of welded joints is dependent on the filler and base material strengths. LÄS MER