Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Space craft"”.
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Spacesuit: space craft
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2003.
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Operation and design of multi-jet space-craft control systems.
Massachusetts Institute of Technology. Dept. of Aeronautics and Astronautics. Thesis. 1969. Sc.D.
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The effects of liquid propellant motion on the attitude stability of spin stabilized space-craft
… on the attitude stability of spin stabilized spacecraft is presented. The effects of varying the fuel load and the asymmetry of the platform are emphasized. The energy sink stability criteria are compared to the results of a computer simulation. Based on this comparison the limitations of the …
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Constructing the virtual as a social form
… virtual worlds, have become social and cultural spaces for hundreds of millions of humans, while immediate urban space- an offline space-- is losing its value as a dominant center and source of meaning, identity and ideology. As the virtual is an inevitable product, transmitter, and constructor …
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Validation and Characterization of a Laboratory Ion Source for Testing Thermal Space-Plasma Instruments
Prior to launch, space craft instruments need to be tested in a relevant environment to prove operational functionality. Thus, we have developed an ion source to stimulate thermal plasma instruments in a vacuum chamber. This dissertation presents the mechanical design of the source, simulations of …
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Application of a model-based nonlinear attitude control for quadrotor UAVs
… attitude control, originally designed for a space craft, to the quadrotor. In order to implement a nonlinear attitude control system, the dynamic model of the quadrotor is studied and the quadrotor's physical properties are characterized based on the model. Then, stability and agility of the …
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Implementation of bitmask based code compression algorithm on MSP430 microcontroller
… are found everywhere from kitchen appliances to space craft. They span all aspects of modern life from various applications such as biomedical instrumentation, communication systems, peripheral controllers of a computer and industrial instrumentation to scientific applications. </p><p>Since …
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Trajectory design and control for formation flying spaceborne interferometers
Spaceborne interferometry promises to greatly expand our knowledge of astronomy and astrophysics, and open the doors to many new discoveries. The purpose of this study is to investigate optimal resource management techniques for separated space-craft interferometers to successfully synthesize …
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Considerations for a multi-modal electrospray propulsion system
… begun to garner significant interest within the space craft community as economic trends encourage a shift away from larger, stand-alone satellite platforms. In particular, CubeSats have emerged as popular, economic alter natives to traditional satellites which might also facilitate low-cost …
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Analytical methods for gravity-assist tour design
… methods for the design of gravity-assist space- craft trajectories. Such trajectories are commonly employed by planetary science missions to reach Mercury or the Outer Planets. They may also be used at the Outer Planets for the design of science tours with multiple flybys of those planets’ …
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A payload-centric approach towards resilient and robust electric-propulsion enabled constellation mission design
Recent studies have shown that distributed spacecraft missions, or constellations, can offer similar performance to monolithic satellite missions for lower cost and less risk. Additionally, recent developments in and implementation of electric propulsion (EP) technologies further the case for the …
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Variable structure and singular perturbation control of elastic dynamical systems
… of control of flexible dynamical systems for space applications. Two elastic dynamical systems are considered; The multibody system developed in Phillips Laboratory, Edwards Air Force Base, CA consists of two elastic links actuated by electric motors at the joints and rotate on a smooth …
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Charged-Particle Transport in Turbulent Magnetic Fields
… and small scale power spectrum from any single space- craft observation with a long enough period and a high sampling frequency. We applied the method to the solar wind measurement by the magnetometer onboard the ACE spacecraft and reconstructed the large scale isotropic 2D spectrum and the …
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Scale-bridging molecular dynamics simulations of plasma-surface interactions
… materials plays a vital part in electronic, aerospace, automobile, metal manufacturing and biomedical industries. Plasma-surface interactions can be divided into two categories: controlled and erosive. Controlled plasma interactions are used to pattern the surfaces of materials to achieve …
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Experimental investigation of ionic liquid mixtures for electrospray propulsion
<p>"In recent years, there has been a dramatic increase in the number of small satellites (namely MicroSats, NanoSats, and CubeSats) in earth orbit; many of these are launched without propulsion systems. Multi-mode propulsion systems, capable of operating in either chemical or electric mode, have …
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TRANSFORMACE INDUSTRIÁLNÍHO OBJEKTU KOTELNY BÝVALÉHO TOVÁRNÍHO AREÁLU VLNĚNA V BRNĚ NA ULICI MLÝNSKÁ.
Projekt resocializačného centra pracuje s myšlienkou terapie prácou a postupnej integrácie človeka späť do spoločnosti. Návrh vytvára prostredie, v ktorom sa proces obnovy neodohráva izolovane, ale prostredníctvom každodenných aktivít, remeselnej tvorby a kontaktu s verejnosťou. Manuálna práca …
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Knot/Knotting Practice in Craft and Space
Knot/knotting Practice in Craft and Space is a three part research-creation project that used a study of knotting techniques to locate craft in an expanded field of spatial practice. The first part consisted of practical, studio based exercises in which I worked with various natural and synthetic …