Sökning: "flygplansmotorer"

Visar resultat 1 - 5 av 12 uppsatser innehållade ordet flygplansmotorer.

  1. 1. Klimateffekterna av elektrobränsle för flyg

    Kandidat-uppsats, SLU/Dept. of Energy and Technology

    Författare :Jonatan Persson; [2023]
    Nyckelord :Livscykelanalys LCA ; växthusgaser; klimatförändringar; Carbon Capture and Utilization CCU ; flygindustrin; utsläppsminskningar; HySkies;

    Sammanfattning : Kan elektrobränsle vara den nyckeln som flygindustrin behöver för att bekämpa klimatförändringarna? Detta arbete handlar om att utföra en livscykelanalys av elektrobränsle för att bedöma dess effektivitet som en hållbar lösning för att minska klimatpåverkan från flygindustrin. Elektrobränsle är en variant av hållbart flygbränsle, SAF (Sustainable Aviation Fuel). LÄS MER

  3. 2. Multibody modelling of the vibrations in an aircraft engine

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

    Författare :Charly Mollet; [2022]
    Nyckelord :Vibrations; Multibody Modelling; Rolling Bearings; Rotor Dynamics; Reduction Processes; Vibrationer; multikroppsmodellering; rullingslager; rotordynamik; reducktionsprocesser;

    Sammanfattning : During the assembly of aircraft engines, some clearance is left in the rolling bearings mainly to reduce friction. However this clearance might allow the rolling element to vibrate during flight. Indeed, unwanted vibrations called non-synchronous vibrations (NSV) appear on the data recorded by the sensors on some development engines. 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. Investigation of Non-Metallic Inclusions in Inconel 718 by Using Conventional Cross-Sectioned (CS) Method and Experimental Extraction Metal-Surfaced (MS) Method

    Master-uppsats, KTH/Materialvetenskap

    Författare :Mehreen Baig; [2022]
    Nyckelord :;

    Sammanfattning : Inconel 718 is a nickel-based alloy, predominantly used in the oil and gas industry, in aircraft engines as well as in gas turbine engines. It provides exceptional properties like high strength, creep resistance, corrosion resistance and long fatigue life at high temperatures as well as in cryogenic environments. LÄS MER

  7. 5. LES modelling of spray combustion

    Master-uppsats, Lunds universitet/Institutionen för energivetenskaper

    Författare :Arvid Åkerblom; [2021]
    Nyckelord :Gas Turbine; CFD; Large Eddy Simulation; Lagrangian Particle Tracking; Chemical Kinetics; Reaction Mechanism; Combustion; OpenFOAM; CHEMKIN; Technology and Engineering;

    Sammanfattning : Computational fluid dynamics is a powerful method for understanding the flow and combustion that occurs inside aircraft engines and will be a key tool in the transition from conventional fossil-based fuel to sustainable alternatives. Because conventional fuels have been more widely researched, an attempt at simulating the combustion of alternative fuels should be preceded by the development of a method that is capable of accurately simulating the combustion of a conventional fuel. LÄS MER