Results 1 to 10 of about 39,436 (119)
Measuring rotor speed with a smartphone camera [PDF]
IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, 2017 This paper presents a new method to measure a rotor speed using a smartphone camera. An image processing algorithm is proposed to measure the rotation speed, based on the periodic detection of a mark placed on the rotor. Experiments demonstrate our method can estimate rotor speed with a good precision, provided that the camera frame rate is high enough.
Thanh-Chi Le +3 more
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Range and Speed of Rotor Walks on Trees [PDF]
Journal of Theoretical Probability, 2019 Final version; accepted in Journal of Theoretical Probability ...
Wilfried Huss, Ecaterina Sava-Huss
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Variable-speed tail rotors for helicopters with variable-speed main rotors [PDF]
The Aeronautical Journal, 2017 ABSTRACTVariable tail rotor speed is investigated as a method for reducing tail rotor power, and improving helicopter performance. A helicopter model able to predict the main rotor and tail rotor powers is presented, and the flight test data of the UH-60A helicopter is used for validation. The predictions of the main and tail rotor powers are generally
Han, D., Barakos, G.N.
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Transient Aeroelastic Response of a Rotor During Rotor Speed Transition in Forward Flight [PDF]
Journal of Aircraft, 2022 Compound helicopters often have to reduce their rotor tip speeds to achieve higher forward speeds. The rotors, therefore, have to undergo a transient process of rotor speed changes. To investigate the transient loads and the related transformation from the rotating frame to the nonrotating frame, a rotor model is used to predict the transient ...
Han, Dong, Barakos, George N.
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Critical Speed of Rotor in a Liquid
Bulletin of JSME, 1981 Analytical results on the fundamental critical speed of a shaft in a viscous fluid are presented. When the fluid is set in motion by the shaft whirling, dynamic forces imposed by the fluid on the shaft are obtained by solving the two-dimensional Navier -Stokes equations under appropriate boundary conditions and on the assumption of small amplitude of ...
SHIMOGO, Taro, KAZAO, Yukihiko
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Rotating Strength of High Speed Rotor
Bulletin of JSME, 1967 In this paper experiments and theoretical considerations have been made on the burst strength of a high speed rotor which is used in an axial blower or gas turbine. According to the experiments the strength of a rotor is influenced by the centrifugal force induced by blades and the ductility of material of rotor ; the strength of a rotor rises above ...
SATO, Yasuo, NAGAI, Fumio
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Rotor Speed and Rotor Position Estimation Based on MRAS [PDF]
Proceedings of the 2018 International Conference on Mechanical, Electrical, Electronic Engineering & Science (MEEES 2018), 2018 Jun Chen, Mingjiang Wang, Xueliang Ren
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Video-Tachometer Methodology for Wind Turbine Rotor Speed Measurement. [PDF]
Sensors (Basel), 2020 Natili F +3 more
europepmc +1 more source
Development of a centrifugal separator for grape marc: effect of the blade position and rotor speed on grape seed separation performance. [PDF]
Heliyon, 2019 Romaniello R, Tamborrino A, Leone A.
europepmc +1 more source
Transactions of the Japan Society of Mechanical Engineers, 1966 SATO, Yasuo, NAGAI, Fumio
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