Sökning: "aero engine"
Visar resultat 11 - 15 av 59 avhandlingar innehållade orden aero engine.
11. Novel, yet similar: A similarity-assisted product family design approach for structural aero-engine components
Sammanfattning : The aviation industry is in a state of transformation. The climate crisis has amplified the need to innovate, and consequently manufacturers in the aviation industry need to investigate new and more sustainable design concepts. LÄS MER
12. On the Design of Functionally Integrated Aero-engine Structures: Modeling and Evaluation Methods for Architecture and Complexity
Sammanfattning : The drive for airplanes with radically reduced fuel consumption and emissions motivates engine manufacturers to explore innovative engine designs. The novelty of such engines results in changed operating conditions, such as newly introduced constraints, increased loads or rearranged interfaces. LÄS MER
13. Multi-Disciplinary Conceptual Design of Future Jet Engine Systems
Sammanfattning : This thesis describes various aspects of the development of a multi-disciplinary aero engine conceptual design tool, TERA2020 (Techno-economic, Environmental and Risk Assessment for 2020), based on an explicit algorithm that considers: engine performance, engine aerodynamic and mechanical design, aircraft design and performance, emissions prediction and environmental impact, engine and airframe noise, and production, maintenance and direct operating costs.As part of this research effort, a newly-derived semi-empirical NOx correlation for modern rich-burn single-annular combustors is proposed. LÄS MER
14. Influence of Microstructure on Chip Formation - Machining Aero Engine Alloys
Sammanfattning : Aero engine materials such as nickel-iron and titanium based alloys are known to be very difficult to machine. They are also known to produce shear-localized chips; a type of chip which is associated with both an increase of the tool wear and the vibration levels during machining. LÄS MER
15. Experimental Aero Study on Turbine Rear Structures at Engine-Realistic Flow Conditions
Sammanfattning : The aviation industry has made great progress in continuous improvements that reduce the key pollutants associated with aero engines. However, high demands on the aviation industry drive manufacturers and designers to develop even more efficient aero engines. LÄS MER