On the motion and radiation of charged particles in strong electromagnetic waves. 1 - Motion in plane and spherical waves
Motion and radiation of charged particles in strong electromagnetic waves in plane and spherical waves
Gunn, J. E.↗
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On the motion and radiation of charged particles in strong electromagnetic waves. I - Motion in plane and spherical waves
Charge particle motion and radiation in strong plane and spherical electromagnetic waves with nonthermal astrophysical applications
Gunn, J. E.↗
Proper motion survey with the 48-inch Schmidt telescope. 30: Proper motions for 1357 faint stars
A catalog of the proper motion of the faint stars and associated data is presented.
Luyten, W. J.↗
Motion compensator for holographic motion picture camera
When reference beam strikes target it undergoes Doppler shift dependent upon target velocity. To compensate, object beam is first reflected from rotating cylinder that revolves in direction opposite to target but at same speed. When beam strikes target it is returned to original frequency and is in phase with reference beam. Alternatively this motion compensator may act on reference beam.
Kurtz, R. L.↗
Relative motion of orbiting particles under the influence of perturbing forces. Volume 3: Construction of relative motion traces
Geometric traces can be simply constructed to illustrate the relative motions experienced by particles in a number of problem situations. These diagrams describe the displacements and hodographs which arise as a consequence of initial value inputs and selected disturbance (force) conditions. Due to the linearization which is imposed on the mathematical formulation there is a separation of the in-plane and out-of-plane coordinate solutions. The construction of in-plane traces is easier to represent and to visualize. The out-of-plane geometries are the more complicated cases and generally need some added specializations in order to acquire figures which have some degree of symmetry and simplicity.
Eades, J. B., Jr.↗
Human comfort response to random motions with a dominant vertical motion
Subjective ride comfort response ratings were measured on the Langley Visual Motion Simulator with vertical acceleration inputs with various power spectra shapes and magnitudes. The data obtained are presented.
Stone, R. W., Jr.↗
Human comfort response to random motions with a dominant transverse motion
Subjective ride comfort response ratings were measured on the Langley Visual Motion Simulator with transverse acceleration inputs with various power spectra shapes and magnitudes. The results show only little influence of spectra shape on comfort response. The effects of magnitude on comfort response indicate the applicability of psychophysical precepts for comfort modeling.
Stone, R. W., Jr.↗
Human comfort response to random motions with a dominant longitudinal motion
Subjective ride comfort response ratings were measured on the Langley Visual Motion Simulator with longitudinal acceleration inputs with various power spectra shapes and magnitudes. The results show only little influence of spectra shape on comfort response. The effects of magnitude on comfort response indicate the applicability of psychophysical precepts for comfort modeling.
Stone, R. W., Jr.↗
The influence of lateral stability on disturbed motions of an airplane with special reference to the motions produced by gusts
Disturbed lateral motions have been calculated for a hypothetical small airplane with various modifications of fin area and dihedral setting. The modifications of the airplane include changes of dihedral and changes of weathercock stability. Fin area and wing dihedral were found to be of primary importance in side gusts. It was found that the rolling action of the wing with as much as 5 deg dihedral was distinctly unfavorable, especially when the weathercock stability was small. It is pointed out that the greatest susceptibility to lateral disturbances lies in the inherent damping and coupling moments developed by the wing.
Jones, R. T.↗
Human confort response to random motions with a dominant rolling motion
Subjective ride comfort response ratings were measured on a visual motion simulator with rolling velocity inputs with various power spectra shapes and magnitudes. The results show only little influence of spectra shape on comfort response. The effects of magnitude on comfort response indicate the applicability of psychophysical precepts for comfort modeling.
Stone, R. W., Jr.↗
New formulation of de Sitter's theory of motion for Jupiter I-IV. I - Equations of motion and the disturbing function
Elliptic orbits are substituted for circular orbits in the first approximation, in an analysis of the common retrograde motion of Jupiter's satellites. A modification of the de Sitter theory, made possible by extended observations of the satellites, is presented with attention to that aspect of the theory which eliminates small divisors at all stages of the solution. The convergence problem is circumvented by use of Poincare's canonical relative coordinates. In addition, modified Delaunay variables and their associated Poincare variables are applied to the disturbing function, which is expanded by means of generalized Newcomb operators.
Aksnes, K.↗
Collisional redistribution of radiation. II - The effects of degeneracy on the equations of motion for the density matrix. III - The equation of motion for the correlation function and the scattered spectrum
The effect of correlations between an absorber atom and perturbers in the binary-collision approximation are applied to degenerate atomic systems. A generalized absorption profile which specifies the final state of the atom after an absorption event is related to the total intensities of Rayleigh scattering and fluorescence from the atom. It is suggested that additional dynamical information to that obtainable from ordinary absorption experiments is required in order to describe redistributed atomic radiation. The scattering of monochromatic radiation by a degenerate atom is computed in a binary-collision approximation; an equation of motion is derived for the correlation function which is valid outside the quantum-regression regime. Solutions are given for the weak-field conditions in terms of generalized absorption and emission profiles that depend on the indices of the atomic multipoles.
Burnett, K.↗
Rigid body equations of motion for modeling and control of spacecraft formations - Part 1: absolute equations of motion
In this paper, we present a tensorial derivation of the equations of motion of a formation consisting of N spacecraft each modeled as a rigid body.
formation flying↗
Unsteady Shock Motion in a Transonic Flow over a Wall-Mounted Hemisphere.
Abstract not provided.
Beresh, Steven J↗