REVIEW OF TOPICAL ENLARGEMENT IN LASER BEAM MACHINING

Laser beam technology is a standout amongst the most generally utilized warm vitality based non-contact sort progress machining process which can be connected for entire scope of materials. The cost of slicing hand-to-machine materials by customary mechanical machining procedures is high because of the low material expulsion rate and short device life, and a few materials are unrealistic to be cut by the traditional machining process. Laser beam/pillar is focused for softening and vaporizing the undesirable material from the parent material. It is reasonable for geometrically complex profile cutting and making smaller than usual openings in sheet metal. It gives portability to natives and cargo, among the locales of Europe and past, while being a motor for monetary development and employments. It is accordingly critical that development is accomplished in a feasible way, thinking about wellbeing and security worries and additionally unfriendly atmosphere pertinent and ecological impacts. Lasers are generally utilized as a part of assembling, correspondence, estimation and restorative. Vitality thickness of the laser beam/pillar can be adjusted by fluctuating the wavelength. This property has made the lasers capable for expelling to a great degree little measure of material and has prompted the utilization of lasers to produce little elements in work section constituents. The basic investigation of different hypothetical and exploratory reviews is utilized to portray the execution of laser pillar miniaturized scale machining on a portion of the propelled manufacturing materials. This paper gives a survey on the different research activities done in laser beam technology. The substance of paper contains a concise presentation of recent development in laser beam and its improvement

DESIGN AND FABRICATION OF LOW COST OPEN CIRCUIT SUBSONIC WIND TUNNEL

A subsonic wind tunnel is a device used to create a fast stream of air through a test area in which an object is kept. This paper will focus primarily on the fabrication process of small scale subsonic wind tunnel, flow visualization analysis on an object and calculation of lift and drag coefficient of an object through experiment. In the present world of obtaining excellence with the most extreme cost sparing and almost all the aircrafts are composed utilizing CAD programming. These plans however should be checked and tried continuously which gives imperatives results in the full scale. The momentum research not just incorporates confirmation of withdrawal cone outline by looking at the speed of air at various segments got amid CFD investigation with the trial values at comparing forces. This design explains the whole method to plan an open circuit subsonic wind tunnel which will be utilized to concentrate on the wind impact on the diverse models of basic components. The plans were made and broke down, bringing about different examinations of various geometries, and giving the required information of course from the outlines. The profile includes a contraction cone area of side 750mm, square test area of side 500 mm, to suit the model and required instrumentation in it, for power and weight estimation. The test section has a dimension of 340mm x 360mm x 500mm which is companionable to the outlet and inlet of the nozzle and diffuser respectively with the mean velocity of 15 m/s. A straight portion before the test chamber is given to allow the yield of withdrawal zone to offset before it accomplishes the test section

Scientific contribution of Sharjah-Sat-1 to x-ray observations

Sharjah-Sat-1 is currently being developed as a collaborative research project among the Sharjah Academy for Astronomy, Space Sciences, and Technology (SAASST), University of Sharjah (UoS), Istanbul Technical University (ITU), and Sabanci University (SU). A 3U CubeSat design has been adopted with a dual payload onboard: (i) an improved X-ray Detector (iXRD) and (ii) a system of two optical cameras. The mission's primary scientific targets are the bright, hard X-ray sources in our Galaxy and the solar coronal holes. A complimentary payload, consisting of the two optical cameras, will serve as a low-resolution remote sensing application. This project's main technological aim is to develop a CubeSat, from A to Z, operational in the electromagnetic spectrum's hard X-ray regime. The Sharjah-Sat-1 would be the first CubeSat mission to be developed by the SAASST team and UoS students to not only design, fabricate, test, and launch the CubeSat itself but also building the capacities and expertise necessary for future CubeSat missions as well. The anticipated launch is planned for late Q2-2022. The primary science payload onboard is the iXRD (developed by Sabanci University) with a pixelated CdZnTe-based crystal as the active material and a Tungsten collimator with a field of view of 4.26 degrees. The energy range is from 20 keV to 200 keV with a target spectral resolution of 6 keV at 60 keV. Its primary science goal is to observe the very bright galactic hard X-ray sources, transient and persistent. Black hole candidates and pulsars can emit radiation up to a few 100 keVs, making them potential targets. Besides, solar observations will be conducted to study hard X-ray spectra of flares and coronal holes. Other opportunity targets are transient bright events, such as gamma-ray bursts (GRB) and magnetar bursts. A complete in-orbit background analysis has been conducted. While the detector's effective area is only 6.5 cm2, it is expected to reach a sensitivity of 60 mCrab in a single day in 20 keV-100 keV band assuming 600s exposure each orbit