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 5 of 5 for “"Attitude angle"”.
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Lubrificação hidrodinâmica em mancais radiais porosos
… the results relate the eccentricity ratio, the attitude angle, the geometry and the load, friction and design parameters, the latter being a function of the permeability of the porous matrix.
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NUMERICAL INVESTIGATION OF THE PERFORMANCE OF FLUID FILM JOURNAL BEARINGS
… with special attention to the latter. The attitude angle, load capacity, stiffness coefficients and damping coefficients are computed. The effects of groove number, groove angle, groove depth, ridge/groove width ratio as well as bearing length on the performances of the bearing are …
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Numerical simulation of gas-lubricated journal bearings for microfabricated machines
… at the bearing end are shown to increase the attitude angle and decrease the allowable nondimensional mass compared to the equivalent gravity-loaded case. Furthermore, the associated axial pressure gradients are shown to produce a hydrostatic stiffness via inertial effects. A nondimensional …
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Variable structure and singular perturbation control of elastic dynamical systems
… thesis is the elastic space vehicle. For the attitude control and vibration stabilization of the elastic space craft (spacecraft-beam-tip body configuration), singular perturbation technique is used. Based on nonlinear inversion, a control law is derived to decouple the attitude angle and the …
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Measured and predicted rotordynamic coefficients and static performance of a rocker-pivot, tilt pad bearing in load-on-pad and load-between-pad configurations
… 5 pads, .282 preload, 60% offset, 57.87° pad arc angle, 101.587 mm (3.9995 in) rotor diameter, .1575 mm (.0062 in) diametrical clearance, 60.325 mm (2.375 in) pad length. Dynamic tests were performed over a range of frequencies to observe any frequency effects on the dynamic stfffnesses. It was …