Results 101 to 110 of about 11,322 (229)
Cost effective development of a national test bed [PDF]
For several years, the Marshall Space Flight Center has pursued the coordinated development of a Large Space Structures (LSS) National Test Bed for the investigation of numerous technical issues involved in the use of LSS in space.
Jones, V. L. +2 more
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Recursive multibody dynamics and discrete-time optimal control [PDF]
A recursive algorithm is developed for the solution of the simulation dynamics problem for a chain of rigid bodies. Arbitrary joint constraints are permitted, that is, joints may allow translational and/or rotational degrees of freedom.
Damaren, C. J., Deleuterio, G. M. T.
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A FMBD-DEM Coupled Modeling for Semi-Active Controlled Lunar Lander
AerospaceThis study examines the landing performance of a four-legged lunar lander equipped with magnetorheological dampers when landing on discrete lunar soil.
Hanyu Lin, Bo Lei, Weixing Yao
doaj +1 more source
High speed simulation of flexible multibody dynamics [PDF]
A multiflexible body dynamics code intended for fast turnaround control design trades is described. Nonlinear rigid body dynamics and linearized flexible dynamics combine to provide efficient solution of the equations of motion.
Jacot, A. D. +2 more
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Space station attitude disturbance arising from internal motions [PDF]
A source of space station attitude disturbances is identified. The attitude disturbance is driven by internal space station motions and is a direct result of conservation of angular momentum.
Mcclamroch, N. Harris +1 more
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A NASTRAN/TREETOPS solution to a flexible, multi-body dynamics and controls problem on a UNIX workstation [PDF]
Demands for nonlinear time history simulations of large, flexible multibody dynamic systems has created a need for efficient interfaces between finite-element modeling programs and time-history simulations.
Benavente, Javier E., Luce, Norris R.
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Component model reduction via the projection and assembly method [PDF]
The problem of acquiring a simple but sufficiently accurate model of a dynamic system is made more difficult when the dynamic system of interest is a multibody system comprised of several components.
Bernard, Douglas E.
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Methodology for Flexible Modeling of Escalator Multibody Systems [PDF]
, 2009 This paper presents some particular escalator modelling features and methodologies developed to dramatically reduce time cost regarding two aspects: computation and implementation.
Cabanellas Becerra, Jose Maria +3 more
core
Dynamics formulations for the real-time simulation of constrained motion [PDF]
The Space Shuttle program has relied heavily on simulation throughout all phases of development and operation. Real-time, man-in-the-loop simulation has served the NASA manned space flight program by providing the means to evaluate systems design and ...
Kelly, Frederick A.
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Zero-emission traction for rail
Railway Engineering ScienceReplacing the energy density and convenience of diesel fuel for all forms of fossil fuel-powered trains presents significant challenges. Unlike the traditional evolutions of rail which has largely self-optimised to different fuels and cost structures ...
Colin Cole +4 more
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