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Vineet Kumar Vashishtha,,Rahul Makade,,Neeraj Mehla
International Journal of Engineering Science and Technology , 2011,
Abstract: Rapid prototyping technology have emerged a new innovation to reduced the time cost of moulds fabrication by creating 3D product directly from computer aided design thus the designer is able to perform design validation and accuracy analysis easily in a virtual environment as if using a physical model. The primary aim of this paper is to give the reader an overview of the current state of the art in rapid prototyping technology .The paper also deal with feature’s of rapid prototyping in Aerospace industry and some of the existing problem’s of rapid rototyping.
Neeraj Mehla,,Rahul Makade,,N.S.Thakur
International Journal of Engineering Science and Technology , 2011,
Abstract: A solar updraft tower consists of an air collector 1.4 m in diameter and 80 cm tall chimney was set upin NIT Hamirpur, Himachal-Pradesh, India. The objective of the study was to investigate the variation of velocity with essential geometricparameter of the system. The solar updraft tower system consists of three essential elements- collector, chimney height and wind turbine. The output power of a system is depended on the input velocity to the wind turbine. Turbine inlet velocity (V) is the function of five parameter of the solar updraft tower systems such as collector diameter (Dc), roof glass angle (β), entrance height (h), tower's height (Ht), tower's diameter (D), out of which variable roof angle and the chimney height is analysis. It was found that the solar chimney diameter of 8 cm is having the maximum velocity for the constructed setup, and the ratio of chimney diameter to chimney heightwas found to be 0.1.
Vineet Kumar Vashishtha,,Ashok Kumar,,Rahul Makade,,Shashi Lata
International Journal of Engineering Science and Technology , 2011,
Abstract: Solar powered aircraft capable of continuous flight was a dream some years ago, but this great challenge has become feasible today. Quite a few manned and unmanned solar powered aircraft have been developed and flown in the last 30 years. The research activities carried out till now have been mainly focused on flying wings or conventional aircraft configurations, with a great emphasis on the technological aspects. Solar powered aircraft uses solar panel to collect the solar radiation for immediate use but it also store the remaining part forthe night flight. The paper deals with the current state of art of empower the aviation industry with solar power and the shortcoming and the future aspect.
Ashok Kumar,,N.S.Thakur,,Rahul Makade,,Maneesh Kumar Shivhar
International Journal of Engineering Science and Technology , 2011,
Abstract: The performance of a solar radiation conversion system is affected by its tilt angle with the horizontal plane, thus photovoltaic array need to be tilted at the correct angle to maximize the performance of the System, This paper deals with the determination of optimum tilt angle for solar PV array in order to maximize incident solar irradiance. The model starts by calculating the monthly averaged daily solar irradiation components (direct, diffuse, ground- eflected) absorbed by the solar PV array of varying tilt, for this purpose Khatkar Kalan (Punjab ) is selected (latitude=31.06) where the photovoltaic arrays are installed. It is found that the optimum tilt angle changes between 60.5 (January) and 62.5 (December)throughout the year. In winter (December, January, and February) the tilt should be 57.48 , in spring (March, April, and May) 18.16 , in summer (June, July, and August) 2.83 , and in autumn (September,October, and November) 43.67 . The yearly average of this value was found to be 30.61 which is nearly equal to the angle selected at Khatkar Kalan.
Unified Payment Interface—An Advancement in Payment Systems  [PDF]
Rahul Gochhwal
American Journal of Industrial and Business Management (AJIBM) , 2017, DOI: 10.4236/ajibm.2017.710084
Abstract: This paper studies Unified Payment Interface (UPI), a new age payment system introduced in India by National Payment Corporation of India. Unified Payment Interface is a mobile centric, real time interbank payment system which has the potential to transform and universalize digital payments in India. The paper traces the evolution of payments systems in India and examines in detail the technology behind Unified Payment Interface focusing on its architecture and security systems through empirical and theoretical literature review. UPI is a significant advancement as compared to extant payment system in terms of cost, ease of use for consumers, settlement times and security and has witnessed good user adoption. Its modular API based architecture will enable development of innovative solutions for consumers and businesses. UPI is currently in its infancy stage and development of merchant centric UPI solutions will greatly increase the user adoption. UPI can help bring a large part of the population within the ambit of digital economy and can be a great tool for financial inclusion in India.
Mass Distribution in Space-Time and Conception about Space-Time-Mass Continuum  [PDF]
Rahul Singh
International Journal of Astronomy and Astrophysics (IJAA) , 2018, DOI: 10.4236/ijaa.2018.81007
Abstract: There is a relation between space and time, which is called space-time continuum. With the help of some mathematical equations, we can establish an alternative relation between space-time and mass, treating mass as a fifth dimension. There is the concept about mass being a property of any inertial or gravitational object in space. Mass can create distortion in space. As a result of that, space-time curvature will be bent towards the massive object.
Beam Dynamics and Electromagnetic Design Studies of 3 MeV RFQ for SNS Programme  [PDF]
Rahul Gaur, Purushottam Shrivastava
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2010, DOI: 10.4236/jemaa.2010.29068
Abstract: The physics design of a 3 MeV, 30 mA, 352.2 MHz Radio Frequency Quadrupole (RFQ) is done for the future Indian Spallation Neutron Source (ISNS) project at RRCAT, India. The beam dynamics design of RFQ and the error analysis of the input beam parameters are done by using standard beam dynamics code PARMTEQM. The electromagnetic stu-dies for the two-dimensional and three-dimensional cavity design are performed using computer codes SUPERFISH and CST Microwave Studio. The physics design of RFQ consisting of the beam dynamics design near the beam axis and the electromagnetic design for the RFQ resonator is described here.
A Review on Online Social Network: Issues & Challenges  [PDF]
Rahul Nema, Anjana Pandey
Social Networking (SN) , 2016, DOI: 10.4236/sn.2016.52006
Abstract: The Usage of Online social network is increasing day by day where a large number of users publicly access their friend’s link and post any message on the wall. OSN enables different user’s to use the services with a security of using these messages on the user’s wall. Hence various techniques are implemented for the filtering of these wall messages, but there are still various issues and challenges found during the usage of these techniques used in OSN. Here in this paper various issues and challenges from various techniques are discussed and hence on the basis of various issues a new and efficient technique is implemented in future.
Mechanical Behavior of Glass Fiber Reinforced Polymer Pultruded Composite Gratings  [PDF]
Rahul Mangire, Malur N. Srinivasan
Modern Mechanical Engineering (MME) , 2013, DOI: 10.4236/mme.2013.34020

Well-designed and manufactured glass fiber reinforced polymer composite structures have several advantages over steel and conventional concrete structures such as high strength-to-weight ratio, good stiffness, good corrosion resistance and good damping capacity. In view of their higher cost however, their use is restricted to structures with smaller dimensions such as pedestrian walkways particularly where aggressive environmental conditions are encountered such as in chemical and water-treatment plants. The keys to success of these structures lie in the proper choice of the constituent materials, manufacturing method and knowledge of the behavior of the structure under the conditions encountered. Knowledge of the mechanical behavior is particularly important in this context. An investigation was therefore conducted by the authors, in partial fulfillment for the award of master of engineering science degree of Lamar University to the first author under the supervision of the second author [1], to study the response to loading of a glass fiber reinforced polyester composite structure made by the pultrusion process by a reputed manufacturer. The structure chosen for this study was a grating, the details of which are shown in the paper. This type of structure is particularly useful for walkways. The experimental part of the investigation consisted of subjecting the grating to three-point bend test under different loading conditions. The load-deflection curve for each case was obtained and interpreted. One grating was loaded up to failure and the fractured zone was examined using a scanning electron microscope to interpret the microscopic failure features. Simulation of the experimental work was carried out using an industry-standard FEM software to compare the deflection values. The results are presented and discussed in this paper.

Innovative Structured Matrices  [PDF]
Rahul Gupta, Garimella Rama Murthy
Advances in Linear Algebra & Matrix Theory (ALAMT) , 2013, DOI: 10.4236/alamt.2013.33004

Various directions of obtaining novel structured matrices are discussed. A new class of matrices, called “the L-family” matrices are introduced and their properties are studied.

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