منابع مشابه
Cavitation Inception in Spool Valves
Cavitation has been investigated in directional control valves in order to identify damage mechanisms characteristic of components o f aircraft hydraulic systems. Tests have been conducted in a representative metal spool valve and in a model three times larger. Data taken under noncavitating conditions with both valves showed that the position of the high-velocity annular jet shifts orientation...
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The paper describes a project to enhance the print service for CERN. The printer infrastructure consists of over 1000 printers serving more than 5000 Unix users running on workstations of various brands as well as PCs running Linux. In addition, the infrastructure must serve more than 3000 PCs running Windows/95 and NT 4. We support a large number of printer manufacturers, including HP, QMS, Te...
متن کاملUsing Viscosity to Improve Spool Agility
In single stage valves, the main spools are stroked directly by solenoid actuators. They are cheaper and more reliable than multistage valves. Their use, however, is restricted to low bandwidth and low flow rate applications due to the limitation of the solenoid actuators. Our research focuses on alleviating the need for large solenoids in single stage valves by advantageously using fluid flow ...
متن کاملPipe spool fabrication sequencing by automated planning
Construction of Industrial facilities involves a substantial amount of piping. Pipe spools are usually pre-fabricated from a number of raw pipes and pipe fittings (e.g. elbows, flanges, tees, etc.) in fabrication shops. Pipe spool fabrication is often affected by various disruptions from within or outside the shops. Previous research mainly focuses on shop layouts, dispatching rules, buffer loc...
متن کاملRolling perception without rolling motion.
The texture of a rolling circle depicts the translational and rotational components of its motion. In the case of a homogeneous circle, however, visual cues to the rotational component of motion are absent. To examine how the visual system resolves undetermined motion cues, optically neutral circles were displaced so that changes in their orientation were invisible. Contextual cues systematical...
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ژورنال
عنوان ژورنال: The Physics Teacher
سال: 2010
ISSN: 0031-921X
DOI: 10.1119/1.3517016