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Showing 1 to 20 of 182 for “"Tilting"”.
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Dual-axis tilting quadrotor aircraft: Dynamic modelling and control of dual-axis tilting quadrotor aircraft
This dissertation aims to apply non-zero attitude and position setpoint tracking to a quadrotor aircraft, achieved by solving the problem of a quadrotor’s inherent underactuation. The introduction of extra actuation aims to mechanically accommodate for stable tracking of non-zero state …
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Semisimple filtrations of tilting modules for algebraic groups
… of characteristic $p > 0$. The indecomposable tilting modules $\{T(\lambda)\}$ for $G$, which are labeled by highest weight, form an important class of self-dual representations over $k$. In this thesis we investigate semisimple filtrations of minimal length (Loewy series) of tilting modules. …
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Tilting sheaves for real groups and Koszul duality
… sheaves and develop the theory of tilting sheaves. In case of a quasi-split real form of an algebraic group acting on the flag variety we construct an analog of a Soergel functor, which fully-faithfully embeds the subcategory of tilting objects to the category of coherent sheaves on …
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Model-based nonlinear control of active tilting-pad bearings
… bearing candidate for active operation is the tilting-pad bearing. The proposed active tilting-pad bearing has linear actuators that radially translate each pad. The use of feedback control in determining the actuator forces allows for the automatic, continuous adjustment of the pad position …
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Tilting the mirror : packaging "Spanish" architecture in late nineteenth century California
In 1893 at Chicago's World Columbian Exposition, California devoted a great deal of resources to its promotion through a pavilion that spelled out a construct about California's "Spanish" past. This supposed history got incorporated into California's self-representation and affected the identity of …
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Analysis of tilting-pad oil seals for high pressure centrifugal compressors
… design uses a combination of ring seals and tilting pad bearing elements. The stable tilting pad is used to center the heavily grooved seal element. The eight stiffness and damping coefficients which represent the hydrodynamic forces between the journal and the seal assembly are computed by …
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The performance of tilting strategies for the Toronto stock exchange 300 composite index
This research explores the performance of tilting strategies for the Toronto Stock Exchange 300 Composite Index during the period from February 1982 to December 1996. The emphasis is to create a rebalanced or tilted portfolio that has a significantly higher reward-to-risk ratio than the Toronto …
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Computer aided macro-modeling of the electromechanics of the tilting elastically supported plate
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Empirical analysis of masonry walls : structural design and seismic reinforcement through tilting experiments
Masonry is a fundamental building material that is used for a significant proportion of structures across the world, many of which lie in potentially hazardous environments. While masonry naturally has poor performance under lateral loads which lead to tensile forces, many of these structures lie …
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Measured and Predicted Rotor-Pad Transfer Functions for a Rocker-Pivot Tilting-Pad Journal Bearing
… predicted stiffness and damping coefficients for tilting-pad journal bearings (TPJBs) to measurements. Most have found that direct damping is consistently overpredicted. The thrust of this research is to explain the difference between measured and predicted stiffness and damping coefficients for …
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Test Results for Shaft Tracking Behavior of Pads in a Spherical Pivot Type Tilting Pad Journal Bearing
Most tilting pad journal bearing dynamic characteristics estimation methodologies assume perfect shaft tracking by the pads. In other words, they neglect pivot friction. In case of pads having point or line contact that operate under most normal load conditions, the pad tilting is due to a rocking …
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Changes in CW-Doppler aortic blood flow responses with passive tilting in normo- and borderline hypertensive men
… Doppler echocardiographic responses to passive tilting were measured in 39 men using the following protocol: standing; supine; +20° head-up; supine; â 20° head-down. Twenty of the subjects were normotensive (NTN) and the rest were borderline hypertensive (B-HTN) according to prior medical …
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Tilting at Windmills: The power of expectations to influence symptom reporting by people exposed to wind turbine sound
Background: A number of people living in the vicinity of wind farms are reporting health complaints they attribute to exposure to sub-audible wind farm sound (infrasound) generated by wind turbines. A causal link between exposure and symptoms is not indicated by empirical evidence. Evidence …
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A Thermoelastohydrodynamic Model of The Morton Effect Operating in Overhung Rotors Supported by Plain or Tilting Pad Journal Bearings
… to rotors that are supported by either plain or tilting pad journal bearings and it was found that a worse case scenario for the Morton Effect would involve centered, circular and large-amplitude bearing orbits. A test rotor was also designed and built. Initial experimental data revealed an …
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Screw-Fastened Cold-Formed Steel-to-Steel Shear Connection Behavior and Models
… introduces a proposed model for predicting tilting angle and limit states of single-fastened cold-formed steel-to-steel shear connections. Predictions are validated through an experimental study considering ply configuration and a single Hex #10 -washer head fastener, centered in a 102 mm by …
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Gluing silting objects along recollements of well generated triangulated categories
… conditions for our procedure to restrict to tilting objects and to silting and tilting modules. As applications, we retrieve the classification of silting modules over the Kronecker algebra and the classification of non-compact tilting sheaves over a weighted noncommutative regular projective …
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The effects of orientation on ground penetrating radar
… plane, translating the receiver sideways, tilting the receiver backwards, tilting the receiver forwards, and tilting the receiver sideways. The effect of these movements will be measured by changes in the arrival times and amplitudes of the ground wave and the first reflection. From the …
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