In this paper, the multi blade centrifugal fan parameter CAD/CFD was developed. Before treatment with the traditional design method as the foundation, use AutoCAD as development of the embedded language. The work of this regulation to establish a set of more perfect design and optimization program of axial flow fan in air, improve its economy, and provided a shortcut for energy saving and noise...

This report describes the development of a prototype system that is capable of monitoring the deflection of a bandsaw blade during wood sawing process. The deflection is caused by tension loss of the saw blade and leads to downgrading and value loss of timbers. A CCD-type laser triangulation sensor has been proposed to monitor the saw blade deflection. Deflection monitoring has to be done in re...

Wells turbine is a self-rectifying air turbine which is widely used in oscillating water column energy converter. The Wells turbine will always rotate in the same direction irrespective of the direction of the oscillating airflow. Furthermore the Wells turbine has a simple configuration and structure. This is why the Wells turbine is very commonly used for conversion of wave energy. At present ...

We describe a new smartphone app called BLaDE (Barcode Localization and Decoding Engine), designed to enable a blind or visually impaired user find and read product barcodes. Developed at The Smith-Kettlewell Eye Research Institute, the BLaDE Android app has been released as open source software, which can be used for free or modified for commercial or non-commercial use. Unlike popular commerc...

It has been demonstrated that during routine use of the Macintosh blade, great forces are exerted on the maxillary incisors. The aim of this study was, by using biomechanical modelling, to modify a standard Macintosh blade in order to reduce these forces. This resulted in a Macintosh blade with a reduced proximal flange. Five anaesthetists performed tracheal intubation in 46 patients using the ...

BACKGROUND There are two forms of Macintosh laryngoscope blade. Compared with the standard blade, the English blade is longer, its curve is more continuous across the entire length of the blade, the flange of the blade continues much closer to the blade tip, and the height of the flange is shorter. METHOD We studied 300 patients to compare the ease of laryngoscopy with each type of Macintosh ...

The effectiveness of surrogate modeling of helicopter vibrations, and the use of the surrogates for optimization of helicopter vibration are studied. The accuracies of kriging, radial basis function interpolation, and polynomial regression surrogates are compared. In addition, the surrogates for the vibratory hub shears and moments are used to generate an objective function which is employed in...

In this article, a dysfunctional rotor blade belonging to a 3-MW Ruston PT-85ME steam turbine is analyzed from mechanical and metallurgical perspectives. First, using the quant metric method, the chemical composition of the alloy is determined at several parts of the blade.Then, in order to model the blade, the points of the airfoil curve are obtained using CMM (Coordinate Measuring Machine) an...

CRYOEXTRACTION has been established as a safe, indeed the safest, method of removing the cataractous lens. Numerous instruments have been designed for this purpose. Certain problems tend to present during this operation, in spite of careful attention to the preparation: (a) Even when the pupil is widely dilated at the start of the operation, it tends to become smaller during the opening of the ...

The aim of the present study was to find a more optimal blade design for rowing performance than the Big Blade, which has been shown to be less than optimal for propulsion. As well as the Big Blade, a flat Big Blade, a flat rectangular blade, and a rectangular blade with the same curvature and projected area as the Big Blade were tested in a water flume to determine their fluid dynamic characte...