Browsing Havacılık ve Uzay Bilimleri Fakültesi by Author "Turan, Önder"
Now showing items 1-20 of 36
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Component-based exergetic measures of an experimental turboprop/turboshaft engine for propeller aircrafts and helicopters
Aydın, Hakan; Turan, Önder; Karakoç, Tahir Hikmet; Midilli, Adnan (Inderscience Enterprises LTD, 2012)In this paper, component-based exergetic assessment is presented for an experimental turboprop/turboshaft engine, including comparisons and exergetic performance such as their efficiencies, improvement potentials, exergy ... -
Customised application of exergy analysis method to PW120A turboprop engine for performance evaluation
Şöhret, Yasin; Sögüt, M. Ziya; Karakoç, Tahir Hikmet; Turan, Önder (Inderscience Enterprises LTD, 2016)In this paper, first and second laws of thermodynamics are applied on a turboprop engine of a regional aircraft. Performance parameters of the engine are assessed under take-off conditions and maximum power settings. Energy ... -
Dynamic modeling of exergy efficiency of turboprop engine components using hybrid genetic algorithm-artificial neural networks
Baklacıoğlu, Tolga; Turan, Önder; Aydın, Hakan (Pergamon-Elsevier Science LTD, 2015)Genetic algorithm is utilized to design the optimum initial value of parameters and topology of the artificial neural network which is trained by applying the improved backpropagation algorithm using momentum factor so as ... -
Effect of reference altitudes for a turbofan engine with the aid of specific-exergy based method
Turan, Önder (Inderscience Enterprises LTD, 2012)This paper presents effect of reference altitudes on the exergetic efficiency of a engine with the aid of specific exergy method. between 4000-9000 m. In the analysis, and exergy efficiency of the engine is found to be ... -
Energetic and exergetic efficiency modeling of a cargo aircraft by a topology improving neuro-evolution algorithm
Baklacıoğlu, Tolga; Aydın, Hakan; Turan, Önder (Pergamon-Elsevier Science LTD, 2016)An aircraft is a complex system that requires methodologies for an efficient thermodynamic design process. So, it is important to gain a deeper understanding of energy and exergy use throughout an aircraft. The aim of this ... -
Energetic and exergetic performance assessment of a turboprop engine at various loads
Aydın, Hakan; Turan, Önder; Midilli, Adnan; Karakoç, Tahir Hikmet (Inderscience Enterprises LTD, 2013)It is necessary to understand the mechanisms that have enabled improvements of performance parameters such as thermodynamics efficiencies, thrust or power, specific fuel consumption and specific power in aero engines, thus ... -
Energy and Entropy Analyses of an Experimental Turbojet Engine For Target Drone Application
Turan, Önder (2016)This study investigates energy and entropy analyses of an experimental turbojet engine build in Anadolu University Faculty of Aeronautics and Astronautics Test-Cell Laboratory. Law of motions and Brayton thermodynamic cycle ... -
Energy and exergy (ENEX) analyses of a MD-80 aircraft
Turan, Önder (International Journal of Mechanical Engineering and Robotics Research, 2016)The growth in demand for air transport is a problem for the global and local environment. There are, moreover, fundamental conflicts with sustainable development objectives. Sustainability demands a sustainable supply of ... -
Entropy Generation Calculation of a Turbofan Engine: A Case of CFM56-7B
Çılgın, Mehmet Emin; Turan, Önder (Walter De Gruyter GMBH, 2018)Entropy generation and energy efficiency of turbofan engines become greater concern in recent years caused by rises fuel costs and as well as environmental impact of aviation emissions. This study describes calculation of ... -
Environmental impact assessment of a turboprop engine with the aid of exergy
Atılgan, Ramazan; Turan, Önder; Altuntaş, Önder; Aydın, Hakan; Synylo, Kateryna (Pergamon-Elsevier Science LTD, 2013)To develop approaches that effectively reduce engine environmental effect of aircrafts, it is necessary to understand the mechanisms that have enabled improvements in thermodynamic efficiency of aircraft engines. In the ... -
Evaluation of aircraft descent profile
Meriç, Özlem Şahin; Turan, Önder (Elsevier Science BV, 2016)Point Merge System (PMS) is a new method for merging and sequencing arrival traffic flows. It consists of sequencing legs, merge point. PMS allows Continuous Descent Approaches (CDAs) which reduces environmental impacts ... -
Exergetic and exergo-economic analysis of a turboprop engine: a case study for CT7-9C
Aydın, Hakan; Turan, Önder; Midilli, Adnan; Karakoç, Tahir Hikmet (Inderscience Enterprises LTD, 2012)The turboprop engine has played an important role in short haul commuter and military transport aircraft where high speed is not critical. It may provide the aviation sector with one of the most significant means of achieving ... -
Exergetic effects of some design parameters on the small turbojet engine for unmanned air vehicle applications
Turan, Önder (Pergamon-Elsevier Science LTD, 2012)This article analyses some design parameters on the exergetic and energetic performances for a small turbojet engine for unmanned vehicles. On the basis of theoretical data employed, some exergetic and aerothermodynamics ... -
Exergetic performance of a low bypass turbofan engine at takeoff condition
Aydın, Hakan; Turan, Önder; Midilli, Adnan; Karakoç, Tahir Hikmet (Springer International Publishing, 2014)In this article, exergetic methodology is applied for a low bypass turbofan engine at maximum power setting. The engine is a low-bypass (0.96–1) turbofan engine and its variants fitted to the 737-100/200 all comprise six ... -
Exergetic sustainability assessment of a HALE UAV using dodecene fuel
Kaya, Nevzet; Turan, Önder; Midilli, Adnan; Karakoç, Tahir Hikmet (Inderscience Enterprises LTD, 2016)Exergetic sustainability performances of a high altitude long endurance (HALE) unmanned aerial vehicle (UAV), having a single turbofan engine and using dodecene as its fuel were investigated all along its flight profile, ... -
Exergetic sustainability improvement potentials of a hydrogen fuelled turbofan engine UAV by heating its fuel with exhaust gasses
Kaya, Nevzet; Turan, Önder; Midilli, Adnan; Karakoç, Tahir Hikmet (Pergamon-Elsevier Science LTD, 2016)Exergetic sustainability parameters such as, exergy efficiency, waste exergy ratio, environmental effect factor and exergetic sustainability index were investigated for an UAV having a turbofan engine for the case its ... -
Exergetic Sustainability Indicators as a Tool in Commercial Aircraft: A Case Study for a Turbofan Engine
Aydın, Hakan; Turan, Önder; Karakoç, Tahir Hikmet; Midilli, Adnan (Taylor & Francis Inc, 2015)This paper focuses on the exergetic sustainability indicators of a medium-range commercial aircraft engine for constant reference environment and ground running conditions. First, a detailed exergy analysis of turbofan ... -
Exergo-sustainability indicators of a turboprop aircraft for the phases of a flight
Aydın, Hakan; Turan, Önder; Karakoç, Tahir Hikmet; Midilli, Adnan (Pergamon-Elsevier Science LTD, 2013)One of the key challenges for sustainable aviation is to reduce global and local environmental impacts. The scope of this study is analysed and discussed in detail for better understanding of sustainability performances ... -
Exergy analysis of an air-blasted combustor: an application for atmospheric test rig condition
Topal, Ahmet; Turan, Önder; Uslu, Sıtkı; Sögüt, M. Ziya (Inderscience Enterprises LTD, 2016)Combustion of fuel finds its importance in heating, power production and transportation. The main objective of this study is to assess the performance of an air-blasted combustor using the exergy at different combustor ... -
Exergy Approach to Evaluate Performance of a Mini Class Turboprop Engine
Çoban, Kahraman; Şöhret, Yasin; Söğüt, Mehmet Ziya; Turan, Önder; Karakoç, Tahir Hikmet (Springer International Publishing Ag, 2017)In this chapter, performance assessment of a mini class turboprop engine is presented. Exergy analysis is used for this purpose on the basis of applicability on thermal systems. As a result of the component-based exergy ...