Sökning: "rotor dynamics"

Visar resultat 11 - 15 av 50 uppsatser innehållade orden rotor dynamics.

  1. 11. Thermal Loads in Space Turbines

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Emily Chen; [2019]
    Nyckelord :;

    Sammanfattning : Prediction of thermal loads within cavities in space turbine, has as been a challenging task  in aspects of achieving accurate and reasonable estimations that are crucial for design concepts. The difficulty lies within the turbulent flow and its thermal interaction with the structure inside such section. LÄS MER

  3. 12. Passenger Flight Experience of Urban Air Mobility

    L3-uppsats, Uppsala universitet/Observationell astrofysik

    Författare :Daniel Persson; [2019]
    Nyckelord :Urban Air Mobility; UAM; Passenger Flight Experience; Electric Vehicles; Electric Helicopter; Passenger Simulation; Passenger Simulator; NDARC; FlightCODE; NASA;

    Sammanfattning : The first part of a study of passenger flight experience of Urban Air Mobility was completed. This first part included the design of different Urban Air Mobility vehicle models, in which the passenger flight experience would be quantitatively measured. LÄS MER

  4. 13. Experimental Investigation of Added Mass and Damping on a Model Kaplan Turbine for Rotor Dynamic Analysis

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

    Författare :Timmy Nyman; [2018]
    Nyckelord :Added mass; added damping; rotor dynamics; kaplan turbine; vibrations; fluid dynamics;

    Sammanfattning : The concept of added hydrodynamic properties such as added mass is of importance in modern hydropower development, mainly for rotor dynamic calculations. Added mass could result in reduced natural frequencies and altered mode compared to existing simulation models. LÄS MER

  5. 14. Detection and removal of wind turbine ice : Method review and a CFD simulation test

    Magister-uppsats, Högskolan i Gävle/Energisystem

    Författare :Ismael Bravo Jimenez; [2018]
    Nyckelord :renewable energy; wind turbine; ice accretion; flow simulation; CFD; wind turbine performance; anti-icing methods; de-icing methods.;

    Sammanfattning : Nowadays, the energy sector is facing a huge demand that needs to be covered. Wind energy is one of the most promising energy resources as it is free from pollution, clean and probably will arise as one of the main energy sources to prevent global warming from happening. Almost 10% of the global energy demand is coming from renewable resources. LÄS MER

  7. 15. Modelling and Identification of a RUAV

    Master-uppsats, Linköpings universitet/Reglerteknik

    Författare :Alaa Saeed; Mattias Mucherie; [2018]
    Nyckelord :;

    Sammanfattning : Modelling a linear mathematical model of a radio controlled (RC) helicopter in hover is the main goal of this thesis. The thesis introduces a general description about how RC-helicopters work and different phenomenons that effect the behaviour of a RC-helicopter. These phenomenons play an important role in the modelling part. LÄS MER