Results 261 to 270 of about 39,365 (297)

High-speed tilt mirror for image stabilization

Applied Optics, 1999
A magnetostrictively driven tilt-mirror mount for image stabilization of NASA's Marshall Space Flight Center's Experimental Vector Magnetograph has been designed, built, and tested. A simple improvement in the mounting technique of the actuator resulted in a factor of 3 increase in the lowest resonant frequency of the device. The tilt-mirror device was
J R, Taylor, M S, Anderson, P H, Bunton
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Capillary Stability in a Tilted Circular Cylinder

Microgravity Science and Technology, 2014
The classical capillary stability problem in a vertical circular cylinder is a special case of the more general problem of the stability of liquid above a capillary surface in a circular cylinder with arbitrary orientation of gravity. This problem can, of course, also be viewed as arbitrary cylinder orientation in a steadily accelerating spacecraft ...
Steven H. Collicott, Robert E. Manning
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Dynamics and stability of charged spherical star with tilted and non-tilted congruences

Modern Physics Letters A, 2014
This paper investigates the dynamics of anisotropic viscous spherical star under the effects of electromagnetic field for a radially moving observer relative to the matter distribution, i.e. a tilted observer. We formulate relationship between tilted and non-tilted quantities using the Einstein–Maxwell field equations.
Sharif, M., Ul Haq Bhatti, M. Zaeem
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A study of tilt-stable optimality and sufficient conditions

Nonlinear Analysis: Theory, Methods & Applications, 2012
Recent results by Eberhard et al. (2006) and Eberhard and Wenczel (2009) on the interaction of single- and double-envelope operations of nonsmooth functions and their interaction with second-order derivations have been used to study tilt-stability of ...
Andrew Eberhard
exaly   +1 more source

Capillary Stability in Tilted Square Cylinders

48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2010
The stability of a liquid mass above a capillary surface, as in the left sketch of Fig. 1, in a circular cylinder began to be examined long ago.1,2 Later, in 1968 Concus3 used a axisymmetric numerical shooting method that integrates the curvature defined by the pressure fields to solve for equilibrium interface shapes as functions of contact angle and ...
Steven Collicott, Robert Manning
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Tilt-tuned etalon locking for tunable laser stabilization

Optics Letters, 2015
Locking to a fringe of a tilt-tuned etalon provides a simple, inexpensive method for stabilizing tunable lasers. Here, we describe the use of such a system to stabilize an external-cavity quantum cascade laser; the locked laser has an Allan deviation of approximately 1 MHz over a one-second integration period, and has a single-scan tuning range of ...
Bradley M, Gibson, Benjamin J, McCall
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Tilting stability of field-reversed configurations

AIP Conference Proceedings, 1994
Tilting in field‐reversed configurations (FRC) has long been regarded as the most dangerous instability threatening FRC confinement. Tilting is analogous to the internal kink in a tokamak. The tilting stability of FRC experiments can be explained by a combination of ideal‐MHD and finite ion gyro‐radius effects.
L. C. Steinhauer, A. Ishida
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Resonator stability subject to dynamic random-tilt aberration

Journal of the Optical Society of America A, 2003
We derive the behavior of the average exit time (i.e., the number of reflections before escape) of a ray path traveling between two perfect mirrors subject to dynamic random-tilt aberrations. Our calculation is performed in the paraxial approximation. When small random tilts are taken into account, we may consider an asymptotic regime that generically ...
Hongler MO, Lasser T, Evéquoz G
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Maintenance of postural stability as a function of tilted base of support

Human Movement Science, 2016
The experiment was set-up to investigate the mechanisms of postural control by manipulating the base of support angle, using tilted platform wedges. The primary focus was to analyze the coupling of the motion of the center of mass (CoM) and the center of pressure (CoP), and the motions of the leg joints considered as individual components and synergies.
Aviroop Dutt-Mazumder, John Challis, Karl Newell   +2 more
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Electronic Stability Control of a Narrow Tilting Vehicle

SAE International Journal of Materials and Manufacturing, 2011
<div class="section abstract"><div class="htmlview paragraph">This paper aims to contribute to the development of an electronic stability control for narrow, fully tiling vehicles with handling and stability characteristics similar to motorcycles, and to improve the understanding of the driver-vehicle interaction.
Johannes Edelmann, Manfred Plöchl
openaire   +1 more source