Topic
Rotational speed
About: Rotational speed is a research topic. Over the lifetime, 23327 publications have been published within this topic receiving 151696 citations. The topic is also known as: speed of revolution & revolution rate.
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Patent•
06 Dec 1990TL;DR: In this article, a pivotable guide blades are arranged in an exhaust gas turbocharger in front of the turbine wheel inlet for charge pressure control in an internal combustion engine, and the guide blades and the blow-off device are actuated by a single actuator.
Abstract: Pivotable guide blades are arranged in an exhaust gas turbocharger in front of the turbine wheel inlet for charge pressure control in, for example, an internal combustion engine. These guide blades are moved by an adjusting ring so that an adaptation of the charge pressure takes place to the exhaust gas which rises with the rotational speed of the engine. When the rotational speed is further increased, the exhaust gas blow-off takes place by way of an integrated blow-off device. The guide blades and the blow-off device are actuated by a single actuator.
57 citations
TL;DR: In this paper, a stability analysis is presented which gives, for any mean spindle rotation speed and degree of modulation, the limiting width of cut for chatter-free cutting for a single cutter.
57 citations
10 Mar 1980
TL;DR: In this article, self-excited flow oscillations in radial vaneless diffusers of centrifugal compressors are investigated analytically using the linearized equations of motion for unsteady flows.
Abstract: Self-excited flow oscillations in radial vaneless diffusers of centrifugal compressors are investigated analytically using the linearized equations of motion for unsteady flows. Solutions of the differential equations are made to satisfy boundary conditions at diffuser inlet and exit which in typical conversion systems represent the coupling between the diffuser and upstream and downstream components. The results indicate that the rotational speed of the stall pattern is dependent on the diffuser radius ratio and the coupling conditions between the impeller and the diffuser. It is shown that the dependence of the onset of the flow oscillations on the diffuser radius ratio is strong if the conditions at diffuser inlet are such that low speed rotating stall patterns are generated in the diffuser. Onset of high speed rotating stall patterns is more affected by the coupling conditions between the impeller and the diffuser than by the diffuser radius ratio.Copyright © 1980 by ASME
57 citations
TL;DR: In this paper, a dynamic simulation of a Stirling engine with a cam-drive mechanism used in concentrating solar power system has been performed, and a dynamic model of the mechanism is developed and then incorporated with the thermodynamic model so as to predict the transient behavior of the engine in the hot-start period.
57 citations
Patent•
31 Oct 1969TL;DR: In this article, the rotational slippage between the driven and non-driven wheels is determined, and the rotation speed of the driven wheels is controlled in dependence on the magnitude of such slippages.
Abstract: An installation for preventing the spinning of the driven wheels of a motor vehicle in which the rotational slippage between the driven and non-driven wheels is determined, and in which the rotational speed of the driven wheels is controlled in dependence on the magnitude of such slippage.
57 citations