High-speed solid-rotor induction machines (HSIMs) are popular within high-speed (HS) applications because of their high rotor structural integrity and fairly well-established manufacturing process guaranteeing quality series products. Designing a new HS electric machine requires multidisciplinary team to accomplish the performance desired. In case design, components applied materials often reac...

the purpose of this study was to investigate the effect of a selected motor program (as a motor experience) on manipulative skills in 4-6-year-old boys. 40 subjects were selected randomly using a personal information questionnaire. after the pretest, the ulrich's test of gross motor development (2000) including fundamental motor skills, locomotors skills, manipulative skills and controllin...

induction motors are the most commonly used in the traction industries and electric vehicles, due to their low primary cost, low maintenance costs, and good performance. speed identification is needed for the induction motor drives. however, using of speed sensors in the induction motor drives is associated with problems such as, extra cost, reduced reliability, added mounting space, etc.. ther...

Este artículo presenta el diseño, construcción y prueba estática de un prototipo motor cohete propulsado por combustible sólido tipo Candy. El diseño se basó en la metodología SRM (Solid Rocket Motor Design). incluyó sistema ignitor, cámara combustión, tobera. diámetro interno combustión longitud total del fueron 27,67 mm 230 mm, respectivamente. La tobera fue Laval convergente-divergente. mezc...

This article is focused on the analysis of aluminum combustion dynamics, induced by acoustic oscillations, in solid rocket motors. dynamics expected to drive self-sustained pressure oscillations which can lead structural damages rocket. In order control this thermoacoustic instability, theoretical developments are presented paper highlight main parameters source. These new based a linear model ...

The switched reluctance motor is a simple and robust machine, which has found application over a wide power and speed ranges in different shapes and geometries. This paper introduces a new configuration for a two phase unidirectional switched reluctance motor/field assisted generator. The proposed novel motor/generator consists of two magnetically independent stator and rotor sets (layers), whe...

Contamination in hydraulic systems is the cause of 70% failures. This study highlights performance degradation caused by solid particle contamination components: gear pump, 4/3 valve, and orbital motor. Experimental durability tests components with wear particles test dust are used to investigate effects accelerated these two types contaminants. Results show that oil contaminated reduces volume...