Sökning: "Cryogenic propulsion"

Hittade 5 uppsatser innehållade orden Cryogenic propulsion.

  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. Functionnal Modelling and Simulation of the Off-Design Operation of a Cryogenic Engine

    Master-uppsats, KTH/Kraft- och värmeteknologi

    Författare :Brice Metzinger; [2022]
    Nyckelord :Cryogenic propulsion; Electrical pump; Operating domain;

    Sammanfattning : The Exploration Company is a French and German start-up that develops and operates Nyx, anorbital vehicle that also has a lunar version. This thesis focuses on the modeling and simulationof the o-design operation of the cryogenic engine of Nyx. LÄS MER

  4. 3. Integration of cryogenic tanks and fuel cells for future hydrogen-powered aircraft

    Master-uppsats, Linköpings universitet/Fluida och mekatroniska system

    Författare :Grégoire Dannet; [2021]
    Nyckelord :hydrogen; aircraft; cryogenic tanks; fuel cells;

    Sammanfattning : Hydrogen is seen as the green fuel of the future for the aeronautical sector allowing to reduce the carbon footprint of commercial aviation. It is well established that the release of carbon emissions triggers global warming. Aviation, like many other industries, must reduce them. LÄS MER

  5. 4. Optical Analysis of the Hydrogen Cooling Film in High Pressure Combustion Chambers

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Fabian Weber; [2019]
    Nyckelord :optical; analysis; hydrogen; h2; cooling; film; high; pressure; combustion; chambers; rocket; engine; thrust; experimental; oh*; shadowgraphy; flame; emission; lox; liquid; bipropellant; cryogenic; efficiency; heat; flux;

    Sammanfattning : For performance optimisation of modern liquid cryogenic bipropellant rocket combustion chambers, one component which plays an important role in reducing the wall side heat flux, is the behaviour of the cooling film. At the Institute of Space Propulsion of the German Aerospace Center (DLR) in Lampoldshausen, hot test runs have been performed using the experimental combustion chamber BKM, to investigate the wall side heat flux which is -- among other factors -- dependent on cooling film properties. LÄS MER

  7. 5. Modeling of a vehicular LNG tank with regard to real time implementation

    Master-uppsats, KTH/Maskinkonstruktion (Inst.)

    Författare :Christian Wessel; [2015]
    Nyckelord :;

    Sammanfattning : The usage of natural gas (NG) as an alternative vehicle fuel is becoming more and more common, due to a factor of approximately 600 between the liquid and vapour phase density, the storage of liquefied natural gas (LNG) in cryogenic containers is desirable to enable for NG propelled long haulage vehicles. Due to the novelty of the LNG vehicular market, little research in the field “modeling of LNG vehicular tanks” exists. LÄS MER