2017 Fifth International Conference on Aerospace Science & Engineering (ICASE)最新文献

{"title":"Performance assessment of satellite-terrestrial relays under correlated fading","authors":"Furqan Jameel, Faisal, M. Haider, A. Butt","doi":"10.1109/ICASE.2017.8374283","DOIUrl":"https://doi.org/10.1109/ICASE.2017.8374283","url":null,"abstract":"Relay assisted satellite communication holds the promise to increase the coverage area and enhance the energy efficiency of Land Mobile Satellite (LMS) systems. To this end, this paper focuses on the performance analysis of relay assisted LMS communication. The channel between relays and satellite is subjected to Shadow Rician fading. Moreover, correlated fading environment is assumed between relays and mobile nodes. The satellite adopts Optimal Relay Selection (ORS) strategy to select the best relay out of available set of relays. Furthermore, we evaluate the performance of LMS based on outage probability and provide closed form expression for the said metric. Simulations and analytical results are provided to show the impact of various network parameters on the performance of LMS systems.","PeriodicalId":203936,"journal":{"name":"2017 Fifth International Conference on Aerospace Science & Engineering (ICASE)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114613375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design and analysis of a five stage axial flow compressor","authors":"Mohammad Saad Aftab, Muhammad Aadil Khan, Fahad Ali, K. Parvez","doi":"10.1109/ICASE.2017.8374248","DOIUrl":"https://doi.org/10.1109/ICASE.2017.8374248","url":null,"abstract":"The objective of this paper is to devise a feasible method for designing and analyzing a multistage axial flow compressor, specifically a five-stage axial flow compressor. With the aid of a few design requirements, namely, mass flow rate, RPM, inlet diameter and required pressure rise, an accurate model is generated. The design methodology is based on the principles of the mean line design, as well as the free vortex theory. Incorporating the aerothermodynamics relations, MATLAB scripts are generated which allow stage by stage data as well as individual blade data for each stage to be found. Once the thermodynamic parameters including pressures, temperatures, and densities for the each stage, as well as the annular dimensions and air angles for each blade are found using the MATLAB scripts, the NACA 65 series airfoil is employed to form these blades. Furthermore, other integral parameters, such as blade solidity and aspect ratio are selected after a profound literature review, which in turn allows us to determine the number of rotor and stator blades per stage. After the availability of all the necessary data, the final geometry is formed using CATIA. The first stage is redesigned using ANSYS/BladeModeler, since the maximum stagnation pressure rise occurs over the first stage, only the first stage is analyzed using ANSYS CFX to validate the theoretical results and hence the viability of the design.","PeriodicalId":203936,"journal":{"name":"2017 Fifth International Conference on Aerospace Science & Engineering (ICASE)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114686991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a pigeon shaped MAV for surveillance","authors":"Saira Latif, Irtiza Ali Shah, Aamir Naveed, Ahsen Ali, Fauz Naeem","doi":"10.1109/ICASE.2017.8374253","DOIUrl":"https://doi.org/10.1109/ICASE.2017.8374253","url":null,"abstract":"Security and surveillance in complicated and difficult terrain, in case of any natural disaster emergency situation is a need of the day. Low cost, light weight and energy efficient micro air vehicles have appeared as vital tool to cope with such challenges. In this research, a design of such a low cost, light weight miniature size air vehicle is presented which could be used to explore D3 (Dull, Dirty, Dangerous) environments. As a first phase, a theoretical and mathematical framework was developed to apply multi-disciplinary design optimization (MDO) to the suggested micro air vehicle concept to achieve an optimized design. CFD (Computational Fluid dynamics) analysis and wind tunnel testing was then performed to analyze the aerodynamic performance and characteristics of the MAV design. Subsequent phases of development, implementation and detailed testing of the proposed conceptual design have been presented. The proposed design is a pigeon shaped air vehicle with a wing span of 0.3 meters and a flight range of 2 km with a minimum endurance of 30 minutes in both indoor and outdoor environments. Test benches and measurement mechanisms were developed for measurements of electrical and physical specifications. Bench testing was followed by ground testing in order to analyze the stability of the desired MAV in indoor environments. Finally, optimized weight distribution was calculated and a number of flight tests were performed which have fully proved practical validity of the proposed model. The significance of this research lies in need for battlefield reconnaissance, damage assessment, and visual surveillance. The primary aim of this research was to develop such a low cost search and survey aerial vehicle which could be used not only for search and surveillance during close combats and anti-terrorist operations but also for general civilians' security purposes. Recent security conditions around the world has created an immediate need for development of such low cost, light weight and easily portable miniature air vehicle. As a result of this research, a micro air vehicle has been successfully developed for the purpose.","PeriodicalId":203936,"journal":{"name":"2017 Fifth International Conference on Aerospace Science & Engineering (ICASE)","volume":"12 15","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120930965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental findings for velocity profiles and boundary layer thickness of Blasius flow","authors":"Y. Javed, Syed Irtiza Ali Shah","doi":"10.1109/ICASE.2017.8374251","DOIUrl":"https://doi.org/10.1109/ICASE.2017.8374251","url":null,"abstract":"Blasius flat plate flow theory is one of the basic fluid mechanics studies which deal with the flow properties inside boundary layer. In this work, Blasius flat plate flow was analyzed experimentally and velocity profiles and boundary layer thickness measurements were equated with theoretical findings. Moreover, the variation of velocity profiles along the length of plate were also analyzed. Boundary layer thickness and velocity values at different positions along the length of plate have been plotted in order to find the practicality of Blasius equations. The Boundary layer thickness variation has been determined by interpolation and extrapolation of the flow velocity. A lot of efforts have been done over a period of time to find analytical solution for Blasius nonlinear differential equations. The empirical findings of this work were then compared with one of the theoretical solution and comparison was drawn. This experimentation work is particularly helpful in relating theoretical concepts to experience and will facilitate in teaching core concepts of fluid mechanics to predict flow behavior from direct observations.","PeriodicalId":203936,"journal":{"name":"2017 Fifth International Conference on Aerospace Science & Engineering (ICASE)","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126371448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From carbon dioxide gas to nano-carbonaceous additive: An electrolytic route to nanomaterials","authors":"M. K. Hayat, S. Shabbir, M. Zubair, S. Husain","doi":"10.1109/ICASE.2017.8374260","DOIUrl":"https://doi.org/10.1109/ICASE.2017.8374260","url":null,"abstract":"Nano-carbonaceous additives like carbon nanofibers (CNFs), carbon nanotubes (CNTs), graphene, graphene oxide (GO) and carbon nanoparticles have a wide range of properties and potential applications especially in aerospace composite materials. However, because of the applied cost intensive fabrication processes, these materials still have a limited use. The present work provides an alternative route for the synthesis of a significant nanomaterial i.e. graphene, through the electrolytic conversion of a greenhouse gas like CO2. This process will not only provide high yield, scalability and cost effectiveness, but may also, when employed on a larger scale, result in the reduction of CO2 from the atmosphere, thus, helping to mitigate the global warming. The synthetic process will employ molten carbonates electrolyte and electrodes. While some of the structure controlling variables, that determine the ultimate properties of the synthesized graphene, will be optimized. These parameters include addition of zinc as an initiator, use of transition metals to act as nucleation sites, selection of salts of various properties and the current density. The ensuing product will then be characterized using XRD, EDX and FESEM.","PeriodicalId":203936,"journal":{"name":"2017 Fifth International Conference on Aerospace Science & Engineering (ICASE)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126668459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Manuscript acceptance notification","authors":"N. Naqvi","doi":"10.1109/icase.2017.8374289","DOIUrl":"https://doi.org/10.1109/icase.2017.8374289","url":null,"abstract":"The ICASE 2017 Review Committee is pleased to inform you that your submitted paper ttiled as Mapping Between Technology Readiness Levels and Model Philosophy: A Study in the Domain of Technology Management in Space Industry (Paper ID: ICASE2017-STMA-1002), has been ACCEPTED for ORAL Presentation at Fifth International Conference on Aerospace Science & Engineering, (ICASE) to be held from Novemeberr 14-16, 2017 at Institute of Space Technology (IST), Islamabad, Pakistan.","PeriodicalId":203936,"journal":{"name":"2017 Fifth International Conference on Aerospace Science & Engineering (ICASE)","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124179130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}