Sökning: "Kraft och tryck"

Visar resultat 1 - 5 av 44 uppsatser innehållade orden Kraft och tryck.

  1. 1. Evaluating the Performance of Propulsion System Elements in an Aerospace Company

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :David Fredouelle; [2023]
    Nyckelord :Turbomachinery; injector; test campaign; cryogenic; rocket engine; test bench; cold flow; Turbomaskin; injektor; testkampanj; kryogen; raketmotor; testbänk; kallt flöde;

    Sammanfattning : This paper examines two examples of testing activities of sub-components of a 300kN methalox first-stage rocket engine developed by Pangea Aerospace, namely, theinjectors and the cryogenic pumps. One of the difficulties of these test campaignsis to evaluate the performances of these sub-components without using cryogenicpropellants and in conditions differing from flight conditions. LÄS MER

  3. 2. Experimental Testing of EPS-foam

    Master-uppsats, KTH/Hållfasthetslära

    Författare :Carl Göransson; Erik Arnald; [2023]
    Nyckelord :Solid Mechanics; EPS; Experimental testing; Hållfasthetslära; EPS; Experimentell testning;

    Sammanfattning : The aim of this master thesis was to investigate the mechanical properties of ExpandedPolystyrene (EPS) through experimental testing. The strain was measured on thespecimen’s surface with Digital Image Correlation (DIC), in order to investigate howthe first principal strain at fracture initiation depends on the loading of the material. LÄS MER

  4. 3. Dynamic Modelling of a Fluidic Muscle with a Comparison of Hysteresis Approaches

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

    Författare :Tess Antonsson; [2023]
    Nyckelord :Mechatronics; Soft Actuators; Pneumatic Artificial Muscles; Dynamic Modelling; Hysteresis; Maxwell-Slip Model; Generalised Bouc-Wen Model; Mekatronik; Mjuka Ställdon; Pneumatiska Artificiella Muskler; Dynamisk Modellering; Hysteres; Maxwell-Slip Modell; Generaliserad Bouc-Wen Modell;

    Sammanfattning : n recent years, there has been a surge in interest and research into the utilisation of soft actuators within the field of robotics, driven by the novel capabilities of their inherently compliant material. One such actuator is the Pneumatic Artificial Muscle (PAM) which offers a high power-to-mass ratio, compliance, safety, and biological mimicry when compared to their traditional counterparts. LÄS MER

  5. 4. Design, Modeling, and Testing of a Force Feedback Haptic Device for Simulated Robot Interaction

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :Patrik Lindström; [2023]
    Nyckelord :Force Feedback; Impedance Control; PD-gain; Dynamic Behavior; Closed-chain; Master-Slave; Parallel Manipulator; Kinematics Redundancy; Mass-Spring-Damper; Position Control; Current Control; Modeling; Design; Joints; Delta robot; Differential Equations; External Torques; Kinematics; Forward Kinematics; Inverse Kinematics; Dynamic Matrices; Jacobian; URDF; Haptics; Haptic Device; Solidworks; CAD; Maxon Motors; EtherCAT; Beckhoff;

    Sammanfattning : Haptic feedback is a growing phenomenon that incorporates the sense of touch through tactile sensations such as vibrations, electrical signals, air pressure, and sound waves or through force feedback, which employs torques and/or forces to replicate the pressure and weight of a simulated object. Utilizing haptic technology establishes a communication bridge between the user and the technical component, enhancing the user's understanding of the technical component's surroundings. LÄS MER

  7. 5. Hybridisation of fuel cells and batteries for aerial vehicles

    Kandidat-uppsats, KTH/Kemiteknik

    Författare :Emil Botling; katrin Sheibeh; Martin Wood; [2022]
    Nyckelord :Hydrogen; Sustainable flight; Hybridisation; Batteries; Fuel cell; UAV; Unmanned aerial vehicle; Sustainable energy; Green Raven; Green energy; Green fuel; Green flight; Drone; Drones;

    Sammanfattning : There is an ever growing need for environmentally sustainable alternatives in today's society due to the looming threat of greenhouse gasses. One field where the need for new environmentally friendly solutions is needed is the aviation industry. LÄS MER