Results 251 to 260 of about 980,901 (302)
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Variable-geometry nonimaging optics devices
SPIE Proceedings, 2001A new application of design techniques for nonimaging concentrators is presented. Variable Geometry Nonimaging Optics Devices are presented for 2D systems. These devices have a variable acceptance angle allowing for its continuous variation within a range of values.
Julio Chaves, Manuel Collares-Pereira
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Variable geometry for supersonic mixed-compression inlets
10th Propulsion Conference, 1974Study of two-dimensional and axisymmetric supersonic mixed-compression inlet systems has shown that the geometry of both systems can be varied to provide adequate transonic airflow to satisfy the airflow demand of most jet engines. Collapsing geometry systems for both types of inlet systems provide a generous amount of transonic airflow for any design ...
Norman E. Sorensen +2 more
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Inverse kinematics of variable‐geometry truss manipulators
Journal of Robotic Systems, 1991AbstractA new class of robotic arm consists of a periodic sequence of truss substructures, each of which has several variable‐length members. Such variable‐geometry truss manipulators (VGTMs) are inherently highly redundant and promise a significant increase in dexterity over conventional anthropomorphic manipulators.
Naccarato, Frank, Hughes, Peter
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Variable Geometry Capacitive Probes for Multipurpose Sensing
Research in Nondestructive Evaluation, 1989A capacitive array for robotic proximity and feature sensing has been designed, modeled, and tested. The basic probe consists of alternating metallic strip electrodes. One set of strips makes up the drive plate. The other set consists of tiny receivers. Both sum and differential modes of operations are used to allow one to detect proximity and features,
Mark Gimple, B. A. Auld
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Geometry Assessment of Variable Displacement Radial Pumps
Volume 2: Automotive Systems, Bioengineering and Biomedical Technology, Fluids Engineering, Maintenance Engineering and Non-Destructive Evaluation, and Nanotechnology, 2006The paper brings to evidence the effect that geometry of the stator ring of variable displacement radial pumps bears on performance characteristics of these units. The type of motion of the stator ring (linear or rotational), the location of the centre of rotation, the porting plate integral with the casing or with the stator ring all have remarkable ...
RUNDO, Massimo, NERVEGNA, Nicola
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Manipulation of gel emulsions by variable microchannel geometry
Lab Chip, 2009In this article we investigate the morphology and manipulation of monodisperse emulsions at high dispersed phase volume fractions (gel emulsions) in a microfluidic environment. Confined monodisperse gel emulsions self-organize into well-ordered droplet arrangements, which may be stable or metastable, depending on the geometry of the confining ...
Surenjav, E. +3 more
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Space Frames of Variable Geometry
International Journal of Space Structures, 1985Space frames are generally studied as stable, rigid structures. However, the addition of transformation systems offers a new dimension in theoretical research. In this paper an approach to the transformation of polyhedral and spherical space frames is introduced, resulting in a uniform, rigid ‘impansion’, whereby all the edges are cut into three parts
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Geostatistics for Variable Geometry Veins
2017This paper presents the idea of applying a modified “moving trihedral” borrowed from the abstract Theory of the Geometry of Riemann, allowing us to model the random functions L2(Ω, σ, P) of geostatistics, in a special 2-D plane within such trihedral, a feature not available in any software existing in the market.
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The Variable-Geometry Power Turbine
SAE Technical Paper Series, 1969<div class="htmlview paragraph">In gas turbine vehicular applications, a power turbine with a variable-position nozzle results in several operating advantages. These advantages, as well as the design considerations of a variable nozzle power turbine are described.
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
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