Sökning: "Blade Element Theory"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden Blade Element Theory.

  1. 1. Study testing of Dampers in Prototype Blade in Figure Skating Landings

    Magister-uppsats, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :Anoop George; Anilkrishnan Vasundharan Rema Bai; [2022]
    Nyckelord :;

    Sammanfattning : This thesis is primarily intended to estimate the technical feasibility of an invention while also attaining product development as a project. A new cushioning FS blade with an integrated damping system (FSB-IDS), developed to reduce the vibration and acceleration of the impact. LÄS MER

  3. 2. Performance analysis of a small-scalewind turbine at variable pitch and withpitch unbalance

    Master-uppsats, KTH/Strömningsmekanik och Teknisk Akustik

    Författare :Francesco Mazzeo; [2021]
    Nyckelord :Wind energy; wind turbine; pitch angle; pitch unbalance; Blade Element Momentum BEM theory; Computational Fluid Dynamics CFD ; wind tunnel experiments; oscillations;

    Sammanfattning : When it comes to design a wind turbine rotor, several parameters have to be taken into account. The present work focuses on the inclination of the blades with respect to the rotor plane, namely the pich angle. LÄS MER

  4. 3. Dimensionering och konstruktion av passiv mekanisk pitch för småskaliga horisontalaxlade vindkraftverk

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Författare :David Oljelund; [2020]
    Nyckelord :Wind; turbine; wind; power; pitch; mechanical; passive; design; dimension; sizing; HAWT; axis; horizontal; axle; small; scale; torsion; spring; spring; loaded; torsion; BEM; blade; element; mechanical; engineering; power; production; over; rated; wind; tip; speed; ratio; Vindkraft; vind; kraft; pitch; mekanisk; passiv; konstruktion; dimensionering; horisontalaxlad; horisontal; axlad; horisontalaxlat; småskala; småskalig; små; skala; vridfjäder; torsionfjäder; fjäderbelastad; fjäder; vrid; torsion; BEM; Blad; Element; maskinteknik; effektproduktion; över; märkvind; löptal;

    Sammanfattning : För vindkraftverk i mindre skala används i huvudsak två sätt att avlasta vid höga vindhastigheter, stallreglering och girning ur vind. En tredje metod är att pitcha rotorbladet till en mindre attackvinkel. Då minskar belastningen på rotorbladet samtidigt som effektgenerering kan bibehållas. LÄS MER

  5. 4. Analysis and Initial Optimization of The Propeller Design for Small, Hybrid-Electric Propeller Aircraft

    Master-uppsats, KTH/Flygdynamik

    Författare :Ali Alshahrani; [2020]
    Nyckelord :Electric; hybrid; Propeller; Optimization; variable pitch; fixed pitch; blades number; Eldrivet; hybrid; Propeller; Optimering; justerbar vinkel; fast vinkel; bladnummer;

    Sammanfattning : This thesis focuses on the optimization of the electric aircraft propeller in order to increaseflight performance. Electric aircraft have limited energy, particularly the electricmotor torque compared to the fuel engine torque. For that, redesign of the propeller forelectric aircraft is important in order to improve the propeller efficiency. LÄS MER

  7. 5. Examination and Design of Propeller Configurations foran Electrically Powered Hydrofoil Vehicle

    Master-uppsats, KTH/Marina system

    Författare :Joakim Wallberg; [2018]
    Nyckelord :;

    Sammanfattning : The thesis examines propeller configurations for the propulsion system for the water mode in the amphibious craft concept Newt, which also includes contra-rotating propellers. Newt is a research project on innovative commuter vehicles carried out by the naval architecture department at KTH. LÄS MER