Sökning: "flygmotorer"

Visar resultat 1 - 5 av 11 uppsatser innehållade ordet flygmotorer.

  1. 1. Effect of dwell (hold) time on high temperature fatigue crack growth of AM components

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Hemanth Venkatesan; [2023]
    Nyckelord :Dwell time; creep; fatigue; IN718; LPBF; hold time; sustained loading; Uppehållstid; krypning; utmattning; IN718; LPBF; hålltid; ihållande belastning;

    Sammanfattning : GKN Aerospace AB, Sweden (GAS) is one of the leading companies taking up the charge in manufacturing components using Additive Manufacturing(ed) (AM) techniques in the aerospace sector. They are a hub of engineering and they are a supplier of engine and engine components to the world’s leading aero-engine manufacturers, and airframes to civil and military aircraft manufacturers. LÄS MER

  3. 2. A numerical comparison of the thermoacoustics for different equivalence ratios for n-dodecane using LES

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Björn Jarfors; [2023]
    Nyckelord :Computational Fluid Dynamics; Bluff-body stabilised flames; Large Eddy Simulation; Thermoacoustics; Acoustics; NEUMANN Project; Jet engines; Aero engines; Airplanes; Combustion; Numerics; Technology and Engineering;

    Sammanfattning : Klimatförändringarna påverkar vår värld och det behövs ett mer hållbart samhälle. Flygindustrin är i behov av förändring, men flygmotorer är mycket komplexa och tar tid att utveckla. Termoakustiska instabiliteter har kraften att förstöra en motor, men också att minska miljöpåverkan. LÄS MER

  4. 3. Aeroengine transients in altitude test facility

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Baptiste VILLENEUVE; [2022]
    Nyckelord :;

    Sammanfattning : Altitude test facilities offer a safe and reliable way to perform a wide variety of tests on aircraft engine. Among them, aeroengine transients represent a necessary step in the certification and qualification of engines. LÄS MER

  5. 4. Development of a Tool for Inverse Aerodynamic Design and Optimisation of Turbomachinery Aerofoils

    Master-uppsats, KTH/Flygdynamik

    Författare :Berkin Kurtulus; [2021]
    Nyckelord :Aerodynamics; Turbomachinery Airfoil design; Inverse Design Automation; Airfoil Optimization;

    Sammanfattning : The automation of airfoil design process is an ongoing effort within the field of turbo-machinery design, with significant focus on developing new reliable and consistent methods that can meet the needs of the engineers. A wide variety of approaches has been in use for inverse airfoil design process which benefit from theoretical inverse design, statistical methods, empirical discoveries and many other ways to solve the design problem. LÄS MER

  7. 5. Lifespan improvement of bolted connection inside the turbine

    Master-uppsats, KTH/Lättkonstruktioner

    Författare :Clément Helterlin; [2019]
    Nyckelord :;

    Sammanfattning : In order to reduce fuel consumption of aircraft engines, components are constantly optimized. This improvement is pushing component’s limits to the farthest they can handle. That’s why engine manufacturers have to guarantee a minimum engine lifespan. The evaluation of these lifespans is made on each component. LÄS MER