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•
13 Mar 1998
Abstract: A rolling contact bearing with rotational speed measuring device, in particular a wheel bearing for motor vehicles for telemetric transmission of energy and signal between bearing and environment, insensitive to tolerances of the bearing and its surrounding parts, with simple and cost-effective construction and small dimensions. A first telemetry unit is integrated in the inter-ring seal. It comprises pulse transmitter, rotational speed sensor, telemetry electronics and a miniature coil, which is inductively coupled with a further telemetry unit, which is fitted axially outside the bearing, and which supplies the first telemetry unit with energy and receives its signals.
68 citations
TL;DR: In this article, the effects of tool rotation and various intensities of external magnetic field on electrical discharge machining (EDM) performance have been studied and two mathematical models were developed to predict the material removal rate (MRR) and surface roughness (SR).
68 citations
TL;DR: In this paper, an experimental investigation on the speed and torque loss components of the power loss of a rubber V-belt continuously variable transmission (CVT) as operating conditions (parameters) change is presented.
68 citations
TL;DR: In this article, the angular velocity of the upper atmosphere is determined by examining the changes in orbital inclination of all suitable satellites, covering the years 1958-63, height of 200-300 km and latitudes from 0-60°.
68 citations
Patent•
03 Jan 1989TL;DR: In this paper, a high bypass turbofan engine configuration is proposed where a fan drive turbine is divided into first and second turbine sections mounted for independent rotation within the engine frame.
Abstract: The present invention provides a high bypass turbofan engine configuration wherein a fan drive turbine is divided into first and second turbine sections mounted for independent rotation within the engine frame. The first, higher pressure, higher speed turbine section is coupled to the fan section drive shaft via a gear box which reduces the rotational speed of the power delivered by the higher pressure first turbine section to match the design rotational speed of the fan section. The second turbine section, having a larger diameter and lower rotational speed as compared to the first turbine section, is directly connected to the fan section and drives the fan section at the same rotational speed as that of the second turbine section. In this manner, the fan drive shaft horsepower is provided while reducing the weight and size of the necessary gearing between the fan drive turbine and the fan. The weight and size of the fan drive turbine and the booster compressor are also reduced.
67 citations