Sökning: "Aerospace"

Visar resultat 1 - 5 av 253 uppsatser innehållade ordet Aerospace.

  1. 1. Simulation of road traffic flow in Hangzhou

    Kandidat-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Louise Brandt; Anders Holmberg; [2022]
    Nyckelord :simulation; road traffic flow; traffic flow; traffic; sumo; netedit; dlr.de; zju; hangzhou; zhejiang; china; queue; queuing system; control; automatic control; tls; tli; phase time; cycle time; traffic light signal; traffic light intersection; pedestrian crossing; idling time; optimize traffic flow; traffic jam; un global goal; mfs; minor field study; sida; reduce emissions; emission; vehicle; pcu; matlab; python; xml; json; algorithm; variance; deviation; comparison; ratio; case; evacuation; scenario; green; detector; taz; traffic assignment zone; environment; carbon dioxide; randomtrips; flow; fringe; mingap; speeddev; departspeed; sigma; lanechangemodel; sl2015; commuter; public transport; busstop; osm; openstreetmap; sumocfg; traci; driving pattern; road lane; street lane; lane change; u-turn; intersection; junction; teleportation; teleport; route; depart; arrive; collision; street occupancy; occupancy; Technology and Engineering;

    Sammanfattning : Is it possible to increase traffic flows and decrease stand stills in rush hour traffic by tweaking existing traffic light signals? A vehicle’s engine running on idle is not useful in physical terms and emits unnecessary exhausts. By investigating and observing signal phase times on site in Hangzhou, China, an effort was made to find out if it was possible to get better flow and thus lower emissions by changing the traffic signal programs. LÄS MER

  3. 2. The Effect of Process Parameters on Columnar-To-Equiaxed-Transition (CET) During Electron Beam-Powder Bed Fusion of Ferritic Stainless Steel

    Master-uppsats, KTH/Materialvetenskap

    Författare :Doom Eleanor Ihensekhien; [2022]
    Nyckelord :Additive manufacturing; E-PBM; Inoculation; process parameters; TiN; CET;

    Sammanfattning : Electron Beam Powder Bed Fusion manufacturing of components is an additive manufacturing process that is complex and has widespread advantages for aerospace and many industrial processes. It reduces costs and has a larger powder particle size requirement. LÄS MER

  4. 3. Mechanical Design, Analysis, and Manufacturing of Wind Tunnel Model and Support Structure

    Master-uppsats, KTH/Lättkonstruktioner

    Författare :Luis Alfonso Penela Guerrero; [2022]
    Nyckelord :Aerospace; wind tunnel testing; lightweight structures; UAV; composite materials; Flyg; vindtunneltestning; Lättkonstruktioner; UAV; kompositmaterial;

    Sammanfattning : The use of wind tunnel models for aerodynamic research is nowadays indispensable to aviation progress in the last years as aircrafts have become more complex. Wind tunnel model design and manufacturing has adopted many different processes and materials such as the use of a five-axis CNC; making this process a relatively long and expensive one. LÄS MER

  5. 4. Development of a Data Analysis Tool for the EDEN ISS Project

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Christopher BRYSON; [2022]
    Nyckelord :eden; dlr; tool; data analysis; data processing; programming; bryson;

    Sammanfattning : The EDEN ISS project, initiated by the German Aerospace Center (DLR) focuses on the development of greenhouses for future Space habitats on the Moon and Mars. For this, they run a full-size experiment in Antarctica in collaboration with NASA. This experiment is remotely controlled and monitored by the mission control team in Bremen, Germany. LÄS MER

  7. 5. Development of Autonomous Bounding Box Algorithms for OPIC’s Data Prioritization on the Comet Interceptor Mission

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Eric Brune; [2022]
    Nyckelord :Bounding box algorithms; Comet Interceptor; OPIC; SISPO; Cropping;

    Sammanfattning : The joint European Space Agency and Japan Aerospace Exploration Agency mission Comet Interceptor seeks to perform a flyby of a Small Solar System Body (SSSB), through use of a multi-element spacecraft. It comprises a primary spacecraft and two subspacecraft, the latter of which will encounter the intercepted object at a small enough distance that its end-of-life might occur at an impact of either the object itself or its potential coma. LÄS MER