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Toplam kayıt 99, listelenen: 21-40
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Effect of reference altitudes for a turbofan engine with the aid of specific-exergy based method
(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 ... -
Component-based exergetic measures of an experimental turboprop/turboshaft engine for propeller aircrafts and helicopters
(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 ... -
Exergetic and exergo-economic analysis of a turboprop engine: a case study for CT7-9C
(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 ... -
The evaluation of aircraft operations at airports having different numbers and configurations of runways
(2012)Artan hava trafik talebi, hava ulaştırma sisteminin önemli bir parçası olan havaalanlarında kapasite arttırımı ihtiyacını ortaya çıkarmaktadır. Havaalanı hava tarafı kapasitesini etkileyen birçok faktör bulunmaktadır. Pist ... -
Exergoenvironmental analysis of piston-prop aircrafts
(Inderscience Enterprises LTD, 2012)This study deals with exergoenvironmental analysis of a four-cylinder, spark ignition, naturally aspirated and air-cooled piston-prop aircraft engine for landing takeoff (LTO) and cruise phases. This analysis includes the ... -
Exergetic, Exergoeconomic and Sustainability Assessments of Piston-Prop Aircraft Engines
(Turkish Soc Thermal Sciences Technology, 2012)In this study, the exergetic, exergoeconomic, and sustainability aspects of piston-prop aircraft engines are comprehensively reviewed. These analysis and assessment tools are applied to a four-cylinder, spark ignition, ... -
Calculation of HC, CO and NOx from civil aviation in Turkey in 2012
(Inderscience Enterprises LTD, 2013)To meet the growing demand for air transport, airline companies doubled their aircraft numbers in Turkey, where civil aviation activities have shown great development in recent years. This increase in aircraft numbers ... -
Investigation of environmental impact caused by aircraft engines
(Inderscience Enterprises LTD, 2013)The environmental effects of exhaust gas emissions from different types of spark ignitions (SIs) - naturally aspirated and air-cooled from piston-prop aircraft engines - at the landing and take-off (LTO) phase of flight-based ... -
Estimation of vertical and horizontal distribution of takeoff and climb NOx emission for commercial aircraft
(Pergamon-Elsevier Science LTD, 2013)An investigation of takeoff and climb NOx emissions is reported for a twin-engine, narrow-body, short-to-medium haul commercial aircraft, B737-800. Ten randomly selected flights are considered for two independent domestic ... -
Environmental impact assessment of a turboprop engine with the aid of exergy
(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 ... -
Exergo-sustainability indicators of a turboprop aircraft for the phases of a flight
(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 ... -
Identification and quantification of reaction phases at Si3N4-Ti interfaces by using analytical transmission electron microscopy techniques
(Elsevier Sci LTD, 2013)Silicon nitride (Si3N4) and titanium (Ti) were successfully bonded by using a capacitor discharge joining method. The resulting sample interfaces were characterized by scanning electron microscopy (SEM) and analytical ... -
Mevduat bankalarının etkinliği ve hisse senedi getirileri arasındaki İlişki
(2013)Bu çalışmada İstanbul Menkul Kıymetler Borsasına kayıtlı mevduat bankalarının 2006-2010 yılları arasındaki etkinlikleri ve hisse senedi getirileri arasındaki ilişki araştırılmıştır. Çalışmada ilk olarak veri zarflama analizi ... -
A new standard instrument arrival: the point merge system
(Emerald Group Publishing LTD, 2013)Purpose - The purpose of this paper is to design a new standard instrument arrival called the point merge system (PMS) for converging runways. The PMS enables controllers to handle traffic with no heading instruction, as ... -
Aero-propulsive modelling for climb and descent trajectory prediction transport aircraft using genetic algorithms
(Royal Aeronautical Soc, 2014)In this study, a new aero-propulsive model (APM) was derived from the flight manual data of a transport aircraft using Genetic Algorithms (GAs) to perform accurate trajectory predictions. This new GA-based APM provided ... -
New Model for the Optimization of Runway Orientation
(Asce-Amer Soc Civil Engineers, 2014)One of the most significant factors that affects the location of airport elements is the optimum runway orientation. In this study, a new model called Calculation of Optimum Runway Orientation (CORO) is developed with an ... -
Designation of Environmental Impacts and Damages of Turbojet Engine: A Case Study with GE-J85
(MDPI, 2014)Between the troposphere and stratosphere layers of the atmosphere is a critical zone for collecting emissions and negative effects on the Earth (ecological, humanity, and resources). Aircrafts are the main causes of the ... -
Aero-propulsive modelling for climb and descent trajectory prediction of transport aircraft using genetic algorithms
(Royal Aeronautical Society, 2014)In this study, a new aero-propulsive model (APM) was derived from the flight manual data of a transport aircraft using Genetic Algorithms (GAs) to perform accurate trajectory predictions. This new GA-based APM provided ... -
Sustainability assessment of PW6000 turbofan engine: an exergetic approach
(Inderscience Enterprises LTD, 2014)In this paper, theory, methodology and example application are developed and shown for a PW6000 high-bypass turbofan engine in terms of exergo-sustainable perspective. To obtain exergetic sustainability indicators, first, ... -
Advanced low exergy (ADLOWEX) modeling and analysis of a building from the primary energy transformation to the environment
(Elsevier Science Sa, 2014)The main objective of the present study is to model, analyze and assess a building heating system along with its main components through advanced low exergy method. This method is shortly called ADLOWEX and combines advanced ...