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.
Results
Showing 1 to 20 of 41 for “"Static Stability"”.
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Local variation in static stability.
Massachusetts Institute of Technology. Dept. of Meteorology. Thesis. 1966. M.S.
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Utilizing dynamic and static stability to orient parts
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.
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Static stability and seismic behavior of the dome of the Hagia Sophia
… This thesis seeks to better understand the static stability of the Hagia Sophia dome and its dynamic failure mechanisms through a combination of analytical and experimental techniques. By utilizing limit analysis, implemented through graphical methods, the stability of the dome can be …
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Static Stability and Seismic Safety of Brunelleschi’s Dome of Santa Maria del Fiore
… grandeur. Its construction process and stability have been surveyed and researched for centuries. This thesis studies the dome of Santa Maria del Fiore dome in Florence, Italy in a two-fold exploration of its stability limits due to self-weight and horizontal ground acceleration. A …
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Static and Seismic Stability of Cut Slopes in Terms of Reliability
A method is developed for evaluating the static stability of a cut slope formed by strain-softening soil such as highly overconsolidated clay considering progressive failure as the critical failure mode. The stress condition along a potential failure surface both prior to and after an excavation is …
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MULTIDISCIPLINARY OPTIMIZATION OF NON-SPHERICAL, BLUNT-BODY HEAT SHIELDS FOR A PLANETARY ENTRY VEHICLE
… optimization of the aerodynamic performance, static stability, and stagnation-point heat transfer has been completed to find optimal heat shield geometries for blunt-body planetary entry vehicles. In the parametric study, performance trends have been identified by varying geometric parameters …
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Design of a nonhydrostatic atmospheric model based on a generalized vertical coordinate
… resolution is enhanced in regions of high static stability which leads to better resolving of features such as the tropopause boundary. Also, sharp horizontal gradients of atmospheric properties found along frontal boundaries in traditional Eulerian coordinate systems are nonexistent in the …
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Flight Dynamic Constraints in Conceptual Aircraft Multidisciplinary Analysis and Design Optimization
This work details the development of a stability and control module for implementation into a Multidisciplinary Design Optimization (MDO) framework for the conceptual design of conventional and advanced aircraft. A novel approach, called the Variance Constrained Flying Qualities (VCFQ) approach, is …
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The prediction of aerodynamic force and moment coefficients on elliptic cone bodies at both angle of attack and sideslip by use of Newtonian impact theory
… expressions for the aerodynamic coefficients and static stability derivatives were obtained. Expressions for the full and half conic bodies were given and approximate expressions were given for the half cone case. The circular cone results were obtained as a special case of the general results. …
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Understanding the Characteristics of Precipitation and Their Response to Climate Change
… a negative contribution from an increase in dry static stability. In the moist decomposition, changes in moist static stability play a key role. Second, I look at the power-law frequency distributions and fractal dimensions of tropical precipitation clusters. I propose a viewpoint that regards …
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Modeling and Observational Studies of Shallow Cumulus Convection Over the Indian Ocean: Aerosol and Meteorological Effects on Diurnal Cycles
… heating induced by soot aerosols affected the static stability in the boundary layer. The vertical profile of soot aerosols had a critical influence on how they impacted cloud properties and turbulence. Changes in environmental relative humidity and the presence of a dry and stable layer had …
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Lateral stability analysis and MPC tracking control for articulated heavy vehicles
… during curved-path negotiations and low lateral stability under high-speed evasive maneuvers, which may lead to unstable motion modes, e.g., trailer-sway and jackknifing, causing severe accidents. However, vehicle parameters that can improve the static stability may degrade the dynamic stability. …
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An analysis of the static and dynamic characteristics of a decoupled landing entry vehicle
A theoretical analysis of the static and dynamic characteristics of an entry vehicle utilizing the decoupled landing concept has been conducted. A hypersonic arbitrary-body aerodynamic computer program was used to determine the aerodynamics of the basic body. Three theories were used and compared …
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Analysis of the Out-of-Control Falling Leaf Motion using a Rotational Axis Coordinate System
… flight dynamics analysis reaches from local static stability to global dynamic behavior. It includes aircraft performance issues as well as structural concerns. In the particular aspect of dynamic motions of an aircraft and how we understand them, an alternate coordinate system will be …
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Conceptual design of a 30 ft. self-propelled monoform model
… Monoform (a small waterplane area ship). Hydrostatic and static stability considerations formed a basis for obtaining an optimum strut configuration for the hull. Two hull forms were. considered. The model was scaled to a 2000-ton prototype to obtain the necessary geometry for a full scale …
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Shear of small vertical scale observed in the permanent oceanic thermocline
… correlation is strong enough to cause shear instability to occur first in regions of strongest static stability. This prediction again disagrees with observed shear density data in which the smallest Richardson numbers occur in weakly stratified regions. This negative correlation was observed …
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Conceptual Assessment of an Oblique Flying Wing Aircraft Including Control and Trim Characteristics
… unique configuration and investigate some of its stability and control attributes. Oblique wing aircraft concepts are a design option that is well understood, but has yet to be used in a production aircraft. Risk involved in choosing such a design can be averted through additional knowledge early …
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Investigation of Standing Up Strategies and Considerations for Gait Planning for a Novel Three-Legged Mobile Robot
… three limbs do not allow extra support and stability in the process of standing up. This creates a unique problem and requires novel strategies to make STriDER stand up. This thesis examines five standing up strategies unique to STriDER: three feet pushup, two feet pushup, one foot pushup, …
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Large eddy simulation of the upper atmospheric surface layer
… von Karman constant applicable in the neutral-static-stability ABL has not been settled yet; another controversy concerns the form of the universal Monin-Obukhov similarity functions in very unstable conditions. A numerical tool, three-dimensional large eddy simulation (LES), is adopted to …
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Wide area surveillance projectile deployment system design and modeling
… configuration in terms of performance and stability. The deployment system is an integral part of the aerodynamic performance. In the static stability analysis, the aerodynamic configuration was modeled and analyzed using existing software, to provide sufficient control for a flexible …
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