Search for dissertations about: "Flyg- och rymdteknik"

Showing result 1 - 5 of 9 swedish dissertations containing the words Flyg- och rymdteknik.

  1. 1. Framework for cost and weight efficient conceptual design of automotive composite body structures

    University dissertation from KTH Royal Institute of Technology

    Author : Per Mårtensson; Dan Zenkert; Kevin Potter; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; composites automotive cost weight body structure; Aerospace Engineering; Flyg- och rymdteknik; Fiber- och polymervetenskap; Fibre and Polymer Science; Transportvetenskap; Transport Science;

    Abstract : The automotive industry is facing a great challenge - reducing the weight of their vehicles. Carbon fibre composites are regarded by many as the only real option as traditional engineering materials are now running out of potential for further weight reduction. READ MORE

  2. 2. Aerodynamic Investigation of Leading Edge Contouring and External Cooling on a Transonic Turbine Vane

    University dissertation from KTH Royal Institute of Technology

    Author : Ranjan Saha; Torsten Fransson; Jens Fridh; Tony Arts; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gas turbine; aerodynamics; secondary flow; external cooling; trailing edge cooling; film cooling; aerodynamic loss; high pressure turbine; nozzle guide vane; Aerospace Engineering; Flyg- och rymdteknik; Energiteknik; Energy Technology;

    Abstract : Efficiency improvement in turbomachines is an important aspect in reducing the use of fossil-based fuel and thereby reducing carbon dioxide emissions in order to achieve a sustainable future. Gas turbines are mainly fossil-based turbomachines powering aviation and land-based power plants. READ MORE

  3. 3. Contributions to Variable Fidelity MDO Framework for Collaborative and Integrated Aircraft Design

    University dissertation from KTH Royal Institute of Technology

    Author : Zhang Mengmeng; Arthur Rizzi; Leifsson Leifur; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aerospace Engineering; Flyg- och rymdteknik;

    Abstract : 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. READ MORE

  4. 4. Exploring structural carbon fiber composites for mass-less energy and actuation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Wilhelm Johannisson; Dan Zenkert; Göran Lindbergh; Ian Bond; [2020]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aerospace Engineering; Flyg- och rymdteknik;

    Abstract : 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. READ MORE

  5. 5. Static and fatigue analyses of welded steel structures some aspects towards lightweight design

    University dissertation from Stockholm : KTH School of engineering sciences

    Author : Mansoor Khurshid; Zuheir Barsoum; Lars-Erik Lindgren; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fatigue strength; welded joints; static strength; high strength steel; Farkostteknik; Vehicle and Maritime Engineering; Aerospace Engineering; Flyg- och rymdteknik;

    Abstract : 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. READ MORE