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This paper ives results numerically to compare with the measured radiation data, visible spectral radiant intensities of sphere model in ballistic range. There are three steps in numerical calculation: at first, the hypersonic flow field around the model is simulated numerically by solving axisymmetric Navier-Stokes equations with thermal and chemical nonequilibrium gas models (Two-temperature model...
As wind turbines increase their power rating, the size and mass grows as well. The higher reliability is demanded in order to minimize the maintenance. Permanent magnet direct drive (PMDD) synchronous generators are a good solution since they omit the gearbox. While the large generator mass has been also a key difficult problem limiting the practical use of PMDD generator, which makes them difficult...
We demonstrate a micro-displacement sensor that detects changes in the fiber reflection intensity caused by deflection of a few cm-long, photonic bandgap Bragg fiber. Displacements below 10 µm can be detected with this sensor.
The negative behavioral and psychological symptoms (NBPS) seen in patients with cognitive impairment (CI), such as anxiety, agitation and aggression have been reported to be the most problematic for healthcare providers. The consequences of delayed detection of NBPS can be devastating for both patients and caregivers; therefore early detection of symptoms that may lead into NBPS is essential. A proprietary...
A new electrothermal micromirror with large piston and tilt motions was proposed and fabricated. Large initial tilt angles and optical path shifting of previously fabricated thermal micro mirrors were eliminated by employing inverted-series-connected (ISC) bimorph actuators
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