Results 231 to 240 of about 314,370 (260)
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Methodology for rotor angle transient stability assessment in parameter space
2017 IEEE Power & Energy Society General Meeting, 2016In this paper, an efficient methodology to assess Rotor Angle Stability (RAS) in parameter-space has been proposed. This methodology maps deformations of the power system RAS region under operational changes to a security region in parameter-space that can be assessed on-line. In order to choose the proper parametrization, security boundaries have been
Marina Oluic +2 more
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Ocean Engineering, 2013
Abstract The water particles are known to undergo orbital motion in wave motion. This orbital motion was studied and seven Savonius rotors with same diameters but different blade angles were constructed and tested in a wave channel to find the optimum blade angle.
M. Rafiuddin Ahmed +2 more
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Abstract The water particles are known to undergo orbital motion in wave motion. This orbital motion was studied and seven Savonius rotors with same diameters but different blade angles were constructed and tested in a wave channel to find the optimum blade angle.
M. Rafiuddin Ahmed +2 more
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State Estimation for International Space Station Centrifuge Rotor
AIAA Guidance, Navigation, and Control Conference and Exhibit, 2005This paper describes the design of a state estimator to generate absolute centrifuge rotor state information from relative measurements, between the rotor and the International Space Station structure, in the absence of disturba nce input knowledge. A Kalman filter is designed for a plant model augmented with internal disturbance states.
Michael Sullivan +2 more
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Contact force control of tilt-rotor helicopter in 2-dimensional space
2018 IEEE International Conference on Industrial Technology (ICIT), 2018Contact force control of a helicopter allows for achieving aerial tasks that require contact motions with objects. Although force control systems for multi-rotor helicopter whose tilt angle is not variable have been already achieved, force control systems for a multi-rotor helicopter whose tilt angle is variable (tilt-rotor helicopter) have not been ...
Yosuke Tsuchiya +3 more
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2016 XXII International Conference on Electrical Machines (ICEM), 2016
Fault detection in induction machines is commonly realized through motor current signature analysis. In case of Wound-Rotor Induction Machine rotor faults, the amplitude of the inverse sequence harmonic component -sf of the rotor current space-vector is monitored in order to sense its variation.
GRITLI, YASSER +3 more
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Fault detection in induction machines is commonly realized through motor current signature analysis. In case of Wound-Rotor Induction Machine rotor faults, the amplitude of the inverse sequence harmonic component -sf of the rotor current space-vector is monitored in order to sense its variation.
GRITLI, YASSER +3 more
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Space Rotor - A French Concept for a Reusable Recovery System
SAE Technical Paper Series, 1967<div class="htmlview paragraph">The space rotor corresponds to a device designed to satisfy the general requirement for a light, maneuvrable, fully reusable reentry system, having a high capability to spot-land, softly, a variety of space vehicles in unprepared areas.</div> <div class="htmlview paragraph">Recent feasibility studies ...
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Preliminary Evaluation of Impact Forces in Rotor Drop of the AMB-rotor System in Space Reactor
2023Yulan Zhao +4 more
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Influence of Separation Distance on the Flow of Two Closely Spaced Rotors
Journal of AircraftThis paper describes an experimental investigation of the interactions of side-by-side rotors at varying rotor spacings. The tests were performed in hover ([Formula: see text]) using stereoscopic particle image velocimetry (SPIV). The rotors used were DJI 9443 rotors rotating at 4860 RPM (81 Hz).
Nathan Welker, Daniel Maynes
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State-space inflow models for rotor aeroelasticity
12th Applied Aerodynamics Conference, 1994David Peters, Swaminathan Karunamoorthy
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Investigation of axial spacing effect on noise radiation generated by rotor-stator interaction
Journal of Mechanical Science and Technology, 2023Xiaofeng Sun, Lin Du
exaly