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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 20 of 497 for “"spinning"”.
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Maneuver analysis for spinning thrusting spacecraft and spinning tethered spacecraft
<p>During axial thrusting of a spin-stabilized spacecraft undergoing orbital injections or control maneuvers, misalignments and center-of-mass offset create undesired body-fixed torques. The effects of the body-fixed torques, which in turn cause velocity pointing errors, can be reduced by ramping …
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Banging spinning hallelujahs
1 PDF file (vii, 68 pages)
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Polymer gel spinning machine
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Bulletproof gossamer : spinning a superfiber
Spider silk is a material of extraordinary beauty and utility. From the spider's perspective, it is foremost a building material, but also a safety net, a sensory organ, a weapon. From a human perspective, it is a material of extraordinary mechanical properties, an object of artistic and cultural …
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Dynamics of spinning flexible satellites
… the dynamic characteristics and stability of a spinning rigid body with a number of flexible parts. The system is hybrid in the sense that it is described by coordinates depending on time alone and coordinates depending on spatial position and time. The space-dependent coordinates are …
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Dynamics of spinning discs in fluids
The dynamics associated with spinning bodies are important in numerous processes in both nature and industry. A spinning body in a fluid produces a vortex and transfers angular momentum to the surrounding fluid via a combination of viscous dissipation and inertial effects. When a spinning body is …
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Dynamics of spinning discs in fluids
The dynamics associated with spinning bodies are important in numerous processes in both nature and industry. A spinning body in a fluid produces a vortex and transfers angular momentum to the surrounding fluid via a combination of viscous dissipation and inertial effects. When a spinning body is …
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On the dynamics of wool spinning
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1961.
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Phase separation spinning of polypropylene fibers
… of the fibers varied inversely with the spinning draw ratio. The fibers had void fractions ranging from 0.20 to 0.70. The porosity of the fibers was inversely proportional to the polymer contents of the spinning solution. Tenacities and moduli ranging from 1.5 to 8.5 and from 6 to 17 …
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Biomimicry of the spider silk spinning apparatus
… techniques to replicate the spider's silk and spinning apparatus. In the current literature there is no detailed protocol on the production of consistent synthetic fibers. To accomplish this, the fibroins and natural spinning apparatus were taken apart and analyzed in order to develop a …
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SPINNING RESERVE ASSESSMENT IN INTERCONNECTED GENERATION SYSTEMS
… techniques to evaluate unit commitment and spinning reserve requirements. Deterministic approaches do not specifically take into account the stochastic behaviour of system components in the determination of spinning reserve requirements. A probabilistic technique designated as the 'Two Risks …
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Melt Spinning of the Fine PEEK Filaments
The production of fine filaments using the melt spinning process needs considerable effort. A thermoplastic melt is stretched from the spinneret under a constant take-up speed. The high performance thermoplastic PEEK is solidified in the melt spinning process in a small distance and short time. …
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Modeling of Dry Spinning of Polymer Fibers
The developed two-dimensional dry spinning model together with a die swell subroutine supplied by an industrial company has been used to generate predictions, which were compared to experimental data. Based on the analysis of the predictions and comparisons, we learn that phase separation cannot …
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Craftsmanship and automation in flexible metal spinning
… manufacturing techniques. Flexible metal spinning is an incremental forming technique which makes axisymmetric sheet metal components without part-specific tooling and with little material waste. The process has the potential to challenge more established techniques such as stamping and …
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Self-excited vibrations of a spinning disk
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Spinning Black Hole Pairs: Dynamics and Gravitational Waves
… they stay on quasi-circular orbits. However, spinning black hole pairs in eccentric orbits are now understood to be astrophysically equally important. These spinning binaries exhibit a range of complicated dynamical behaviors, even in the absence of radiation reaction. Their conservative …
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The scattering of spinning hadrons from lattice QCD
Hadron spectroscopy is predominantly the study of resonances that decay via the strong interaction into a multitude of stable hadrons, such as the pion. The vast majority of resonances decay via an intermediate hadron with non-zero intrinsic spin. In this thesis, I will present the results of …
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The mechanics and control of flexible asymmetric spinning
Metal spinning is a sheet forming process to produce axisymmetric products, but its commercial operation still depends on a dedicated mandrel which determines the shape of the product, and skilled craftsmen to control the working tool. In Flexible Asymmetric Spinning (FAS) the mandrel is replaced …
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