Search for dissertations about: "space chamber"

Showing result 1 - 5 of 32 swedish dissertations containing the words space chamber.

2. 1. A planetary chamber to investigate the thermal and water cycle on Mars

   Author : Abhilash Vakkada Ramachandran; María-Paz Zorzano; Javier Martin-Torres; Akos Kereszturi; Luleå tekniska universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mars; space chamber; ISRU; water cycle simulation; pure liquid water; habitability; heat transfer; Atmospheric science; Atmosfärsvetenskap;

   Abstract : The water processes that affect the upper layers of the surface of Mars are not yet fully understood. Describing the processes that may induce changes in the water content ofthe surface is critical to determine the present-day habitability of the Martian surface,understand the atmospheric water cycle, and estimate the efficiency of future water extraction procedures from the regolith for In-Situ-Resource-Utilization (ISRU). READ MORE

4. 2. Characterization of Terminal Antennas for Diversity and MIMO Systems by Theory, Simulations and Measurements in Reverberation Chamber

   Author : Kent Rosengren; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mode stirred chamber; embedded pattern; channel capacity; radiation efficiency; reverberation chamber; embedded element; MIMO; diversity gain;

   Abstract : This thesis is based on the work of designing and building a small reverberation chamber, and to use this chamber for characterization of antennas on mobile terminals such as phones. The characterization is done in terms of radiation efficiency, diversity gain and maximum available capacity. READ MORE

5. 3. Single layer near-field acoustic imaging in space-invariant reflective environments

   Author : Elias Zea; Ines Lopez Arteaga; Efren Fernandez-Grande; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; near-field acoustic holography; field separation techniques; single layer; space-invariance; reflective envirionments; närfält akustisk holografi; fältseparationstekniker; enkelt lager; utrymmes invarians; reflekterande miljöer; Vehicle and Maritime Engineering; Farkostteknik;

   Abstract : The visualization of optical fields, or widely known as photography, is a common practice that can also be applied to acoustic fields. No less than three decades of research in acoustic imaging demonstrate its potential and relevance in plenty applications such as sound source identification and localization, as well as characterization of noise generation mechanisms. READ MORE

6. 4. Integrated High-Fidelity Planetary Mission Simulators: A Toolkit for Fidelity Evaluation

   Author : Susmita Mohanty; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LMLSTP; partial simulator; INTEGRITY; simulation fidelity; MDRS; full mission simulator; ISEMSI; planetary mission simulator; integrated planetary mission simulator; simulator; space mission simulator; EXEMSI; fidelity evaluation checklist; fidelity evaluation framework; partial simulation; chamber isolation test; SFINCSS; simonaut; trade-off studies; integrated simulation; full mission simulation; NEEMO; simulator fidelity; HUBES; isolation test; FMARS; framework toolkit; simulation; integrated simulator; baseline mission visualization tool;

   Abstract : Integrated High-Fidelity Planetary Mission Simulators: A Toolkit for Fidelity EvaluationSusmita Mohanty Department of Architecture Chalmers University of TechnologyABSTRACTFuture missions to deep space or other planets will rely heavily on Planetary Mission Simulators. Simulators will be used to replicate the experience and conditions of such missions as faithfully as possible within terrestrial constraints. READ MORE

7. 5. Modelling the multifaceted physics of metallic dust and droplets in fusion plasmas

   Author : Ladislas Vignitchouk; Svetlana Ratynskaia; Richard Pitts; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Electrical Engineering; Elektro- och systemteknik;

   Abstract : Plasma-material interaction constitutes one of the major scientific and technological issues affecting the development of thermonuclear fusion power plants. In particular, the release of metallic dust and droplets from plasmafacing components is a crucial aspect of reactor operation. READ MORE