Güncel Gönderiler: Fakülteler
Toplam kayıt 10075, listelenen: 3941-3960
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Environmental assessment of a micro turbojet engine with the aid of exergy
(American Institute of Aeronautics and Astronautics Inc, AIAA, 2016)Environmental impact of the aviation industry has been an important issue in last decade. In order to decrease the environmental effect and to improve the efficiency of aero engines, one needs to understand the performance ... -
Fuel flow-rate modelling of transport aircraft for the climb flight using genetic algorithms
(Royal Aeronautical Soc, 2015)In this study, development of a new fuel flow rate model for the climbing phase of flight was achieved using a genetic algorithm (GA) method. Two modelling approaches were performed using real flight data records (FDRs) ... -
Emission Benefits of Continuous Descent Approach
(World Scientific And Engineering Acad And Soc, 2009)The approach phase often has the most fuel savings potential among the other phases such as takeoff, climbout, cruise and ground operations. Therefore, the main objective of this study is to investigate being close to the ... -
Prioritisation of factors contributing to human error for airworthiness management strategy with ANP
(Emerald Group Publishing LTD, 2019)Purpose Airline business management is set on airworthy strategy. Airline sustainability depends upon corporate-based airworthy strategy as airworthiness is the base to any airline business management and strategy. An ... -
Development taxonomy of human risk factors for corporate sustainability in aviation sector
(Emerald Group Publishing LTD, 2018)Purpose Contemporary management and strategy mean optimization of ingredient factors such as human factors, systems, operations and equipment. With system approach in management and strategy, human risk factor as input has ... -
A Novel Method to Identify the Nox Emissions of Commercial Aircraft During Descent
(Trans Tech Publications LTD, 2012)In this study a novel method is developed to identify the NOx emissions released from commercial aircraft during descent. In order to obtain EINOx the real flight data and ICAO emissions database are used. According to the ... -
Modeling and validation of temperature changes in a pouch lithium-ion battery at various discharge rates
(Pergamon-Elsevier Science LTD, 2016)This paper deals with the thermal modeling of temperature rise in a pouch lithium -ion battery with LiFePO4 (also known as LFP) cathode material. The developed model represents the main thermal phenomena in the cell in ... -
Effect of Climb Angle on Aircraft Fuel Consumption and Nitrogen Oxides Emissions
(Amer Inst Aeronautics Astronautics, 2018)Departure climb angles differ with respect to factors such as obstacles within the departure track, meteorological conditions, and cost index input, most of which have a dynamic nature to some extent. In this sense, it is ... -
Effects of Ambient Air Temperature on Gaseous Emissions of Turbofan Engines
(Amer Inst Aeronautics Astronautics, 2016)This study presents the results of analyses related to the effects of ambient air temperature (ranging from 5.2 to 23.9 degrees C) on certain engine performance parameters and gaseous emissions, carbon monoxide and nitrogen ... -
NOx, fuel consumption and time effects of flight path angle during descent
(SAGE Publications LTD, 2013)Due to factors affecting flight operation and air traffic management, such as air traffic separation, avoidance of traffic from congested areas, or facilitating separation with crossing traffic, as well as environmental ... -
Relationship between fuel consumption and altitude for commercial aircraft during descent: Preliminary assessment with a genetic algorithm
(Elsevier France-Editions Scientifiques Medicales Elsevier, 2012)Despite fuel flow rates being low during descent compared to climb and cruise, the potential exists for significant fuel savings during that phase of flight. Increased fuel use, costs and related environmental impacts are ... -
Energy and emission assessments of continuous descent approach
(Emerald Group Publishing Limited, 2010)Purpose - Continuous descent approach (CDA) is a method, which allows the aircraft flying its individual optimal vertical profile down to runway threshold with engines operating at low-thrust power. The main objective of ... -
An assessment of cruise NOx emissions of short-haul commercial flights
(Pergamon-Elsevier Science LTD, 2017)Cruise NOx emissions of aircraft are an important input parameter for studies investigating climate change due to their ability to alter the concentrations of certain trace gases, such as ozone, methane, and hydroxyl in ... -
Analysis of Test-Cell Emission Measurements of Newly Overhauled Turbofan Engines
(Amer Inst Aeronautics Astronautics, 2015)In this study, the gaseous emissions of newly overhauled CFM56-3B1 and -3B2 series turbofan engines are measured in a test-cell environment during typical functional and performance test procedures. The measured emissions ... -
Calculation of NOx Emissions of Short and Medium-haul Domestic Flights with Consideration of the Ambient Effect
(IEEE, 2017)In this study, NOx emissions of typical flights at two domestic round trip routes (206-271 NM and 625-740NM) are quantified. The flight and engine parameters were obtained from actual flight data records, whereas the ... -
The effect of flight distance on fuel mileage and CO2 per passenger kilometer
(Taylor & Francis Inc, 2019)In this study, the effect of distance on fuel mileage (fuel burn per nautical mile) and CO2 intensity, based on a large amount of actual flight data, is discussed for narrow-body commercial aircraft performing domestic ... -
Investigating actual landing and takeoff operations for time-in-mode, fuel and emissions parameters on domestic routes in Turkey
(Pergamon-Elsevier Science LTD, 2017)Operational landing and takeoff standards developed by the International Civil Aviation Organization (ICAO) in the 1970s, have been widely-used in fuel consumption and emissions models or inventory studies. However, these ... -
Fuel flow analysis for the cruise phase of commercial aircraft on domestic routes
(Elsevier France-Editions Scientifiques Medicales Elsevier, 2014)From the point of view of the environmental impact of aviation, rather than fundamental strategies mainly intended for lower fuel consumption, and thereby less carbon dioxide emissions, more comprehensive approaches have ... -
Combustion efficiency analysis and key emission parameters of a turboprop engine at various loads
(Elsevier Sci LTD, 2015)In this study, combustion efficiency of a military type turboprop engine is determined at various loads with the aid of emission data. Also, emission data collected from the engine run at various loads by experimental ... -
Advanced exergy analysis of an aircraft gas turbine engine: Splitting exergy destructions into parts
(Pergamon-Elsevier Science LTD, 2015)Advanced exergy analysis of an aircraft gas turbine engine is presented in this paper. In this framework, the main exergy parameters of the engine components are introduced while the exergy destruction rates within the ...
