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Showing result 1 - 5 of 6 essays matching the above criteria.

  1. 1. Environmental Barrier Coatings to protect Ceramic Matrix Composites in next-generation jet engines

    University essay from Högskolan Väst/Institutionen för ingenjörsvetenskap

    Author : Shivang Parmar; [2023]
    Keywords : Environmental barrier coating; ceramic matric composite; atmospheric plasma spray; suspension plasma spray; thermal cyclic fatigue; Barriärbeläggning; keramisk komposit; atmosfärisk plasmasprutning; suspensionsplasmasprutning; termisk cyklisk utmattning;

    Abstract : Gas turbine engine efficiency needs to be raised in order to decrease fuel consumption, greenhouse gas emissions, and expenses. Efficiency may be improved in two ways: by reducing engine weight and raising intake temperatures. READ MORE

  3. 2. Investigation of a Novel Atmosphere-Breathing Electric Propulsion Platform and Intake

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Kun Feng; [2023]
    Keywords : ABEP; VLEO; DSMC; FMF; Orbital Aerodynamics; ABEP; DSMC; VLEO; FMF; Orbital Aerodynamics;

    Abstract : 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. READ MORE

  4. 3. Intake Design, and Optimization for an Atmosphere- Breathing Electric Propulsion System

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Jesus Espinosa Orozco; [2020]
    Keywords : Atmospheric Intake; ABEP; Electric Propulsion; Plasma; VLEO;

    Abstract : Over the last two decades, Very Low Earth Orbit (VLEO) has gained researchers attention as it provides a significant amount of benefits in the field of earth observation and telecommunications. VLEO provides increased payload performance, improved geospatial accuracy, lower launch mass, simplified end of life disposal, and they reduce space-debris collision risk. READ MORE

  5. 4. Kartering av kadmiumhalt i matjord med portabelt röntgenfluorescensinstrument

    University essay from SLU/Dept. of Soil and Environment

    Author : Elin Laxmar; [2018]
    Keywords : Cd; jord; kärna; PXRF; markkartering;

    Abstract : Cadmium (Cd) is a nonessential heavy metal that can be toxic to living organisms even in small amounts. Cd occurs naturally in all type of soils but have also been added trough soil amendments and atmospheric fallout. READ MORE

  6. 5. GC-MS Screening and PCB Analysis of Sediment from Central Kattegat

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Emma Eriksson; [2015]
    Keywords : Paper mill; nuclear power plant; screening; GC-MS; PCB; APGC;

    Abstract : Five sediment samples were collected in Bua on the Swedish west coast, near two industries, a paper mill, and a nuclear power plant. The two industries use water in their processes and have long been associated with releases of different substances, such as PCBs, and other chlorinated compounds. READ MORE