Sökning: "discharge coefficient"

Visar resultat 1 - 5 av 33 uppsatser innehållade orden discharge coefficient.

  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. Samband mellan biopsykosociala faktorer och vidmakthållande av rehabilitering efter thoraxkirurgi : En beskrivande tvärsnittsstudie

    Kandidat-uppsats, Mälardalens universitet/Hälsa och välfärd

    Författare :Ulrica Brindeberg; [2023]
    Nyckelord :;

    Sammanfattning : Bakgrund: Många svenska patienter genomgår årligen thoraxkirurgi. Initial postoperativ rehabilitering riktas främst till att förbättra patienternas grad av dyspné samt rörlighet i thorax, och patienterna rekommenderas att vidmakthålla rehabiliteringsprogrammen även efter hospitaliseringstillfället. LÄS MER

  4. 3. Assessment of a sediment management solution in a reservoir with a sluicing technique using a HEC-RAS 2D model : Case study of Andakílsá river in west Iceland

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Emilía Sól Gudgeirsdóttir; [2023]
    Nyckelord :SediCon Sluicer; Andakílsá Hydropower Station; HEC-RAS 2D Sediment modelling; Sustainable sediment management; SediCon Sluicer; Andakílsá vattenkraftverk; HEC-RAS 2D Sediment Modellering; Hållbar sedimenthantering;

    Sammanfattning : Sediment-related issues in reservoirs can often pose significant challenges to their operational effectiveness, sustainability, and environmental impact. Sustainable sediment management can help resolve these issues and extend the lifespan of dams. LÄS MER

  5. 4. Investigation of a Novel Atmosphere-Breathing Electric Propulsion Platform and Intake

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Kun Feng; [2023]
    Nyckelord :ABEP; VLEO; DSMC; FMF; Orbital Aerodynamics; ABEP; DSMC; VLEO; FMF; Orbital Aerodynamics;

    Sammanfattning : Very Low Earth Orbit (VLEO) provides many benefits for space missions, including better image resolution for Earth observation, better telecommunication link with ground stations, lower launch cost, lower risk of collisions, and fast end-of-life disposal. The last point in benefit is also the main challenge for placing satellites in VLEO. LÄS MER

  7. 5. Development of an absorption model for gas discharge lamp simulation

    Master-uppsats, Malmö universitet/Institutionen för materialvetenskap och tillämpad matematik (MTM)

    Författare :Oscar Vigstrand; [2021]
    Nyckelord :Discharge lamp; Plasma; UV radiation;

    Sammanfattning : Ultraviolet (UV) light has been used for disinfection purposes for over 100 years. Irradiation by UV light is a method to disinfect surfaces in order to prevent microbiological growth. At Tetra Pak this is of great importance as they are manufacturer of filling machines. LÄS MER