Sökning: "Propulsion integration"

Visar resultat 1 - 5 av 16 avhandlingar innehållade orden Propulsion integration.

  1. 1. Aerodynamic Aspects of Propulsion Integration for Next-generation Commercial Aircraft

    Författare :Vinícius Tavares Silva; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Propulsion integration; Ultra-high-bypass-ratio engines; Low-speed testing.; Aerodynamics; Computational Fluid Dynamics; Ultra-short nacelles over-wing nacelle;

    Sammanfattning : Propulsion integration is one of the most challenging aspects of aircraft design. It requires a multidisciplinary approach involving aerodynamics, propulsion, structures, weight, noise, and control systems. LÄS MER

  3. 2. Conceptual Design of Propulsion Systems for Boundary Layer Ingestion

    Författare :Sebastian Samuelsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; turbo-electric aircraft; performance modeling; Aviation; boundary layer ingestion; aircraft engine; conceptual design; propulsion integration;

    Sammanfattning : To reduce the climate impact of aviation new aircraft and engine concepts as well as improved design methods are needed. In this thesis, two fronts are explored. The first concerns improved methods for the conceptual design of the engine. LÄS MER

  4. 3. Fluidic Microsystems for Micropropulsion Applications in Space

    Författare :Johan Bejhed; Johan Köhler; Anders Eriksson; Greger Thornell; Thomas Laurell; Uppsala universitet; []
    Nyckelord :Engineering physics; microelectromechanical systems; MEMS; MST; microsystem; microfluidics; silicon; spacecraft; propulsion; space technology; Teknisk fysik;

    Sammanfattning : Spacecraft on interplanetary missions or advanced satellites orbiting the Earth all require propulsion systems to complete their missions. Introducing microelectromechanical systems technology to the space industry will not only reduce size and weight of the propulsion system, but can also increase the performance of the mission. LÄS MER

  5. 4. High-Temperature Microfluidics for Space Propulsion

    Författare :Ville Lekholm; Klas Hjort; Anders Persson; Lena Klintberg; Herbert Shea; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

    Sammanfattning : In this thesis, microfabrication methods and tools for analysis of heated cold-gas microthrusters are presented, with the aim of improving their reliability and performance. Cold-gas thrusters operate by accelerating pressurized gas through a nozzle. LÄS MER

  7. 5. Experimental Aerothermal Study of Internal Jet Engine Structures

    Författare :Isak Jonsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; intermediate compressor duct; IR-thermography; laminar-turbulent transition; aerothermal; turbine rear structure; heat transfer; hydrogen propulsion; experimental; uncertainty analysis; Clean Sky 2 Joint Undertaking European Union EU Horizon 2020 CS2-RIA EATEEM 82139; multi-hole probe;

    Sammanfattning : In commercial aviation, efficiency improvements may be gained by aerodynamic optimisation of its structural components, such as the intermediate compressor duct (ICD) and the turbine rear structure (TRS). These components have frequently been overlooked in favour of compressor and turbine module optimisation. LÄS MER