Results 341 to 350 of about 813,317 (386)

Solid-Rotor and Composite-Rotor Induction Machines

IEEE Transactions on Aerospace and Electronic Systems, 1972
The feasibility of constructing composite rotors in the laboratory for use on a 60- to 120-Hz supply has been established and the experimental results with such rotors have been published for the first time. Results obtained from the tests made on a three-phase induction motor with different solid-iron as well as composite rotors are presented.
Gorakh R. Soni, Mulukutla S. Sarma
openaire   +2 more sources

An investigation of impulsive rotor noise of a model rotor

Journal of Sound and Vibration, 1973
The investigation of gust induced impulsive rotor noise was made by using a three bladed, 9 ft diameter, model rotor. The gust was produced by a series of air-jets placed under the rotor disc and the noise characteristics were determined for a range of gust lengths and amplitudes.
C.B. Amor, J.W. Leverton
openaire   +2 more sources

Rotation–libration and rotor–rotor coupling in 4-methylpyridine

The Journal of Chemical Physics, 2004
The low temperature rotational dynamics of methyl groups in 4-methylpyridine is analyzed in terms of a model potential including rotation–libration and rotor–rotor coupling. The parameters of the model potential are adjusted by comparison of calculated with published and newly recorded inelastic neutron scattering spectra.
Marie Plazanet, M. A. Neumann, H. P. Trommsdorff, Mark R. Johnson   +3 more
openaire   +2 more sources

Rotor Wake Mixing Effects Downstream of a Compressor Rotor

Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, 1981
An experimental study of rotor wake was conducted in the trailing-edge and near-wake regions of a moderately loaded compressor rotor blade using a rotating tri-axial hot-wire probe in a rotating frame of reference. The flow fieldwas surveyed very close to the trailing-edge as well as inside the annulus- and hub-wall boundary layers. The large amount of
A. Ravindranath, B. Lakshminarayana
openaire   +3 more sources

Rotor Balancing

2001
Publisher Summary Mechanical imbalance is one of the most common causes of machinery vibration and is present to some degree on nearly all machines that have rotating parts or rotors. This chapter provides the information needed to understand and solve the majority of balancing problems by using a vibration/balance analyzer—a portable device that ...
openaire   +3 more sources

Droplets movement and deposition of an eight-rotor agricultural UAV in downwash flow field

, 2017
: The movement and deposition of the droplets sprayed by agricultural unmanned aerial vehicle (UAV) are influenced by the complex downwash flow field of the rotors.
Tang Qing, Zhang Ruirui, Chen Liping, Xu Min, Yi Tongchuan, Zhang Bin   +5 more
semanticscholar   +1 more source

Resolution in zonal rotors

Analytical Biochemistry, 1969
Abstract We have studied “static” factors affecting resolution in zonal rotors, that is, factors that are independent of diffusion or sedimentation of the sample. For most zonal rotors under the recommended conditions, there is proportionately very little zone broadening of sample volumes larger than 10 cc.
C.A. Price, Anna Kovacs
openaire   +3 more sources

Role of artificial intelligence in rotor fault diagnosis: a comprehensive review

Artificial Intelligence Review, 2020
A. Nath, Sandeep S. Udmale, S. Singh
semanticscholar   +1 more source

Aerodynamik des Rotors

1988
Der Rotor steht am Anfang der Wirkungskette einer Windkraftanlage. Seine aerodynamischen und dynamischen Eigenschaften sind deshalb in mehrfacher Hinsicht pragend fur das gesamte System.
openaire   +2 more sources

Rotor Dynamics

2006
Publisher Summary This chapter focuses on vibration theory fundamentals concerning undamped and damped freely oscillating systems. Vibration systems fall into two major categories: forced and free. A free system vibrates under forces inherent in the system.
openaire   +3 more sources