Institute of Aeronautical Engineering

Dindigul, India

Institute of Aeronautical Engineering

Dindigul, India
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Baburaja K.,Andhra University | Baburaja K.,Koneru Lakshmaiah College of Engineering | Subbaiah K.V.,Andhra University | Vanaja T.,Institute of Aeronautical Engineering | Ramesh N.N.,Institute of Aeronautical Engineering
Materials Today: Proceedings | Year: 2017

The wire electrical discharge machining (WEDM) process has been widely used in conductive material machining. The removal of metal takes place due to successive sparks generated between the wire electrode and the gap of the work piece. The WEDM process which is a combination of thermodynamic, hydrodynamic, electrodynamics and electromagnetic actions exhibits a complex and stochastic nature. The performance in terms of surface finish of Aluminium and Hastelloy C-276 is affected by many factors. This paper presents the Ra Surface Roughness Rsk Skewness, Rku Kurtosis of the two work materials using Talysurf and speed. The experiment have been planned according to Taguchi's L24 (4)4. © 2017 Elsevier Ltd.


Eight derivatives of N-(3-chloro-4-fluorophenyl)-2-(5-((3-(4-hydroxy-2, 2-dimethyl l-2,3-dihydrobenzofuran-5-yl)-1-phenyl-1H-pyrazol-4-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl) acetamide were synthesized by reacting pyrazole having substitutions at 1 and 3 positions (phenyl and benzofuran) with various substituted N-(3-chloro-4-fluorophenyl)-2-(4-oxo-2-thioxothiazolidin-3-yl)acetamides.The series of reactions are depicted in following scheme. The chemical structures of these compounds were confirmed by means of 1H NMR, IR and Mass spectra. The compounds were assayed for anti-inflammatory activity.Among the compounds 10a, 10b and 10d showed significant anti-inflammatory activity, 10c showed moderate anti-inflammatory activity. © 2013.


Depuru S.R.,Institute of Aeronautical Engineering | Mahankali M.,Sri Venkateswara University
Advances in Electrical and Electronic Engineering | Year: 2017

This paper proposes the utilization of a DC-DC boost converter as a mediator between a Solar Photovoltaic (SPV) array and the Voltage Source Inverters (VSI) in an SPV array powered air cooling system to attain maximum efficiency. The boost converter, over the various common DC-DC converters, offers many advantages in SPV based applications. Further, two Brushless DC (BLDC) motors are employed in the proposed air cooling system: one to run the centrifugal water pump and the other to run a fan-blower. Employing a BLDC motor is found to be the best option because of its top efficiency, supreme reliability and better performance over a wide range of speeds. The air cooling system is developed and simulated using the MATLAB/Simulink environment considering the steady state variation in the solar irradiance. Further, the efficiency of BLDC drive system is compared with a conventional Permanent Magnet DC (PMDC) motor drive system and from the simulated results it is found that the proposed system performs better. © 2017 ADVANCES IN ELECTRICAL AND ELECTRONIC ENGINEERING.


Dhanalaxmi B.,Institute of Aeronautical Engineering | Naidu G.A.,J B Institute Of Engineering And Technology
IEEE International Conference on Innovative Mechanisms for Industry Applications, ICIMIA 2017 - Proceedings | Year: 2017

The IoT technology creates revolutionary changes in data exchange and device control in different applications. As the IoT network grows it tosses different challenges to engineers and researchers. As the network grows the size of the communicating and processed data also increases. In many cases the clients demands the history of data. To retain the past data large storage disks are in demand. Getting past data may help in data investigation to understand the system behaviour and to estimate its intelligence. Sometimes it is also very important in law-breaking investigation or in case of offence. Then going on adding the storage disks will not satisfy the user demands, buts it pops many other critical issues for both analysists and clients. The increase in disk size and quantity will increase the cost. It may also decrease the performance of the system. For small and individual personal systems this may become an obstacle. For an individual the patriotic IoT may become an expensive and lazy tool to maintain. This creates lots of problem in their daily life. This creates unwanted and unnecessary troubles in the routine life. The large data can be stored in cloud and can be retrieved from cloud data bases. But dynamic reading and storage is a biggest challenge for embedded systems used in IoT. Because of the network speed, data losses in wireless transport and port synchronization problem the data chunks may not arrive at port stand. This need to be intimated to user with acknowledgement signals. For storing real time data entity high speed data RAMs and internal storage devices are embedded in IoT modules. All operations in IoT system are monitored by a microcontroller contained motherboard. In simple and small IoT systems like personal or an individual systems single microcontroller instead of general purpose is sufficient. To reduce the burden on the microcontroller a co-processor can be used. In the present paper a method is proposed to access the data parameters without intervention of main processor. In this method a Direct Memory controller (DMA) is used to fetch the real parameters. © 2017 IEEE.


Bala M.M.,Institute of Aeronautical Engineering | Navya K.,MLR Institute of Technology
International Journal of Civil Engineering and Technology | Year: 2017

Social media such as micro blogging services have a significant impact on the day-to-day lives of people. These services are currently being used by government agencies to interact and communicate information to general public. They also bring an effective collaboration of all stakeholders for dissemination of information during an emergency. Social media is capable of providing spontaneous information during emergency/disaster situations unlike news media, therefore, particularly micro blogging services, have the potential to be adopted as an additional tool for emergency services. In the present work the authors by mining real time data from twitter TM tried to predict the impending damage in the following days during flood scenario. The users of twitter provide important information such as warnings, location of an event, first hand experiences. Such information is collected, preprocessed, geo located and filtered. From the collected information, geo-coded data is prioritized to that of text data. Then the data is analyzed to find the course of the disaster through regression analysis. Later, disaster curve is extrapolated for prediction of damage susceptible locations in the following days. The results are validated by analyzing the past events. In this study, 2015 Chennai flood data is used to validate the results. The study has the potential to facilitate disaster managers for better response operations during emergencies. © IAEME Publication.


Nehru K.,Institute of Aeronautical Engineering | Linju T.T.,Institute of Aeronautical Engineering
Journal of Engineering Science and Technology Review | Year: 2017

The Digital processor requires high speed and low power multiplier. This thesis is devoted to the design of vedic multiplier using semi-custom and full custom approach. The vedic multiplier is a specimen of interest because of its modular design where smaller blocks can be used for to design the bigger ones. Though the adders in the multiplier suffers from the carry propagation delay.So we incorporate a different kinds of adders and the performance was determined by the trade-offs between power delay and area parameters. The vedic mathematics algorithms like urdhvatiryakbhyam were used in the realization of the Vedic multiplier.The Semi-custom and Full custom approaches are utilized in designing the vedic multiplier.The Vedic multiplier was implemented in FARADAYS 180nm as well as FARADAYS 65nm technology for all the design corners in the semi-custom approach.In the Full custom approach we use Tanner EDA for schematic entry and simulation. © 2017. Eastern Macedonia and Thrace Institute of Technology.


Santosh D.H.,JNTUH College of Engineering | Mohan P.G.K.,Institute of Aeronautical Engineering
Proceedings of 2014 IEEE International Conference on Advanced Communication, Control and Computing Technologies, ICACCCT 2014 | Year: 2015

Object tracking is a primary step for image processing applications like object recognition, navigation systems and surveillance systems. The current image and the background image is differentiated by approaching conventionally in image processing. Image subtraction based algorithms are mainly used in extracting features of moving objects and take the information in frames. Here three algorithms namely Extended Kalman Filter, Gaussian Mixture Model (GMM), Mean Shift Algorithm are compared in the context of multiple object tracking. The comparative results show that GMM performs well when there are occlusions. Extended Kalman filter fails because of abnormal behavior in the distribution of random variables when there is nonlinear transformation. It cannot identify multiple objects when there are occlusions. Mean shift algorithm is best suitable for single object tracking and is very sensitive to window size which is adaptive. Results show that this algorithm has the limitation to detect multiple objects when there is even slight occlusion. © 2014 IEEE.


Yadav S.,Indian Institute of Technology Bombay | Yamasani P.,Institute of Aeronautical Engineering | Kumar S.,Indian Institute of Technology Bombay
Energy Conversion and Management | Year: 2015

In this paper, experimental investigations on micro power generation using thermoelectric modules installed around a microcombustor are studied. The work is aimed at developing a combustion based micro power generator as an alternative to low power density electrochemical batteries. A three step micro-combustor is fabricated with mild-steel as the material. Liquefied petroleum gas (LPG)-air mixture is used as fuel-air mixture to operate the microcombustor. A heating cup is used to increase the heat recirculation from hot combustion products thereby enhancing the flame stability limits. The heating cup is fabricated using aluminum material to obtain uniform temperature distribution for improved power generation at smallest scales. The overall conversion efficiency of the micro power generator has been observed to increase with the number of modules mounted on the micro-combustor system as compared to two and one modules. An overall conversion efficiency of 1.2% for one module, 2.56% for two modules and 4.6% for four module configuration was achieved. The overall conversion efficiency reported in the present work is highest for such small scale combustion based micro power generators in comparison to earlier work reported in the literature. A maximum power of 1.56 and 2.35 W respectively is obtained for two and four module configurations. © 2015 Elsevier Ltd. All rights reserved.


Yadav S.,Indian Institute of Technology Bombay | Sharma P.,Indian Institute of Technology Bombay | Yamasani P.,Institute of Aeronautical Engineering | Minaev S.,Far Eastern Federal University | Kumar S.,Indian Institute of Technology Bombay
Applied Physics Letters | Year: 2014

A prototype micro-thermoelectric power generator (micro-TEG) system based on micro-combustion concept has been developed and presented here. The system consists of Bismuth-Telluride based thermoelectric modules mounted on a 0.5 cm3 volume microcombustor. The hot combustion gases from the microcombustor are allowed to flow in reverse direction through a heating cup to maximize the heat transfer from hot combustion products to thermoelectric modules. The system delivers a maximum power of 2.35 W with a fuel (propane) flow rate of 3.98 g/h. Maximum power is achieved at a voltage of 4.34 V, current 0.54 A with a maximum conversion efficiency of 4.58%. The system generates electric power with an improvement of over 83% in energy conversion efficiency over existing micro-TEG systems. © 2014 AIP Publishing LLC.


Chandran A.A.,Institute of Aeronautical Engineering | Younis M.I.,King Abdullah University of Science and Technology
3rd International Conference on Signal Processing and Integrated Networks, SPIN 2016 | Year: 2016

Wireless communication uses Radio Frequency waves to transfer information from one point to another. The modern RF front end devices are implementing MEMS in their designs so as to exploit the inherent properties of MEMS devices, such as its low mass, low power consumption, and small size. Among the components in the RF transceivers, band pass filters and mixers play a vital role in achieving the optimum RF performance. And this paper aims at utilizing an electrostatically actuated micro cantilever beam resonator's nonlinear frequency mixing property to realize a Mixer-Filter configuration through multi-frequency excitation. The paper studies about the statics and dynamics of the device. Simulations are carried out to study the added benefits of multi frequency excitation. The modelling of the cantilever beam has been done using a Reduced Order Model of the Euler-Bernoulli's beam equation by implementing the Galerkin discretization. The device is shown to be able to down-convert signals from 960 MHz of frequency to an intermediate frequency around 50 MHz and 70 MHz in Phase 1 and 2, respectively. The simulation showed promising results to take the project to the next level. © 2016 IEEE.

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