Sökning: "testkampanj"

Hittade 5 uppsatser innehållade ordet testkampanj.

  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. Development of Test Methodologies and Setups for Thrust Measurements of Cold Gas Micro-thrusters for CubeSats

    Master-uppsats, KTH/Lättkonstruktioner, marina system, flyg- och rymdteknik, rörelsemekanik

    Författare :Aleksander Kipiela; [2022]
    Nyckelord :Thrust measurements; cold gas propulsion; micro thrusters; hanging pendulum; CubeSat; Dragkraftsmätning; kallgasframdrivning; mikrodysor; hängande pendel; CubeSat;

    Sammanfattning : Measuring the thrust of cold gas micro-thrusters, due to the small magnitude of the generated force, is a challenging task, and to obtain satisfying quality of results usually careful adjustments of the setup has to be performed. The work presented in this paper aims at improving the quality of such measurements at the GomSpace Sweden company. LÄS MER

  4. 3. Development of a Low Speed Wind Tunnel Test Campaign

    Master-uppsats, KTH/Flygdynamik

    Författare :Siwat Suewatanakul; [2021]
    Nyckelord :Aerospace; wind tunnel testing; aerodynamics; UAV; boundary corrections; support interference; CFD; Ansys Fluent; Aerospace; vindtunneltestning; aerodynamik; UAV; gränskorrigeringar; stödstörningar; CFD; Ansys Fluent;

    Sammanfattning : This study was performed to investigate aerodynamic characteristics of the 37.5% scaled­ down Green Raven MK18 airframe, to evaluate boundary corrections method, and to investigate on support interference. LÄS MER

  5. 4. Numerical Assessment of Defects Effect on Boltless Composites Longitudinal Joints

    Master-uppsats, KTH/Lättkonstruktioner

    Författare :Mara Santaniello; [2020]
    Nyckelord :;

    Sammanfattning : The work presented in this thesis focuses on the numerical assessment of defects effect on potential boltless design for fuselage panels longitudinal joints, typically identified as High Load Transfer (HLT) configuration. Nowadays, the state-of-art joining technique for primary aircraft composite structures, such as fuselage barrels, is still mechanical fastening. LÄS MER

  7. 5. Hur fungerar informeringen om plastpåsars miljöpåverkan? -Implementering av informationsplikten i förordning (2016:1041) om plastbärkassar

    Kandidat-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Jenny Sandin; [2018]
    Nyckelord :Earth and Environmental Sciences;

    Sammanfattning : This study concerns the obligation to provide information about the negative impacts on the environment caused by plastic bags in the Swedish regulation (2016:1041) about plastic carrier bags. The aim was to investigate how in-formation has spread nationally about the regulation as well as how the obli-gation to provide information has been implemented in the stores. LÄS MER