Sökning: "aero engine"

Visar resultat 21 - 25 av 59 avhandlingar innehållade orden aero engine.

1. 21. Optimization of Geometric Robustness of Aero Structures in Early Design Phases

   Författare :Anders Forslund; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Geometry Assurance; Uncertainty Quantification; Robust Design; Simulation; Geometric Variation;

   Sammanfattning : Every manufactured product is different. This variation can be detrimental to quality and product functionality. In an aerospace context, this variation may even result in serious threats to the safety and reliability of aircraft. However, it is not the variation itself that is harmful, but the effects it has on functionality. LÄS MER

3. 22. Aerothermal Experimental Investigation of LPT-OGVs

   Författare :Borja Rojo; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental; Turbine Rear Structure; Aerodynamics; Wind Tunnel; CFD; Gas Turbine; Engine Exit Structure; Outlet Guide Vane; Heat transfer.; Turbine Exhaust Case; Turbine Rear Frame; Exit Guide Vane;

   Sammanfattning : This thesis presents the design, commissioning, and experimental data of a newly built turbine facility at Chalmers University of Technology for investigating the ow in the engine exit structure (EES). The EES is the structure located downstream of the lowpressure turbine (LPT) in a jet engine. LÄS MER

4. 23. Development and Validation of a Numerical Tool for the Aeromechanical Design of Turbomachinery

   Författare :María Angélica Mayorca; Torsten Fransson; Damian Vogt; Eric Seinturier; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aeromechanical design; turbomachinery; numerical tool; reduced order modeling; mistuning; ROM; aero-structure coupling; CFD; FEM; methods; Mechanical energy engineering; Mekanisk energiteknik;

   Sammanfattning : In aeromechanical design one of the major rules is to operate under High Cyclic Fatigue (HCF) margins and away from flutter. The level of dynamic excitations and risk of HCF can be estimated by performing forced response analyses from blade row interaction forces or Low Engine Order (LEO) excitation mechanisms. LÄS MER

5. 24. On Gas Turbine Conceptual Design

   Författare :Konstantinos Kyprianidis; Vishal Sethi; Johan van der Spuy; Mälardalens högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy- and Environmental Engineering; energi- och miljöteknik;

   Sammanfattning : The thesis begins with a review of the evolution of the industry's vision for the aero-engine design of the future. Appropriate research questions are set that can influence how this vision may further evolve in the years to come. LÄS MER

7. 25. On Integrated Product Architectures: Representation, modelling and evaluation

   Författare :Visakha Raja; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; functional decompositions; product internal organisation; Integrated product architecture; system-component interaction;

   Sammanfattning : Continued growth in the commercial aerospace industry makes aircraft manufacturers look for low maintenance, fuel efficient airplanes and aircraft engines are an important factor in the maintenance and fuel costs. The drive for operating cost reduction leads to innovative engine architectures that can place very different requirements on supplier provided components. LÄS MER