Güncel Gönderiler: Fakülteler
Toplam kayıt 10075, listelenen: 4061-4080
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Energy and exergy (ENEX) analyses of a MD-80 aircraft
(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 ... -
Calculation of turn radius and bank angle at different altitudes based on RNP AR
(International Journal of Mechanical Engineering and Robotics Research, 2016)In this study, different kinds of turns based RNP AR procedures such as flyby and RF will be introduced. For fly by turn radius at different altitudes will be calculated. Moreover, the relation between bank angle (A) and ... -
Investigating the effect of turbine inlet temperature on the exergetic improvement potential of a small turbojet engine
(Institute of Electrical and Electronics Engineers Inc., 2017)This paper analyzes and evaluates exergetic improvement rate (IPex) of the components of a small turbojet engine with various turbine inlet temperatures. The engine consists of an inlet, starter generator, a centrifugal ... -
Arrival traffic sequence for converging runways
(Springer International Publishing, 2016)Vectoring, automated methods and speed control are available sequencing methods defined by International Civil Aviation Organization (ICAO). Point Merge System (PMS) is an innovative method for merging and sequencing arrival ... -
A machine learning model to predict NOx emission for turbofan engines of commercial aircraft during idle condition
(Advanced Engineering Solutions, 2016)A machine learning modelling approach to predict nitrogen oxides (NOx) emission was accomplished for turbofan engines of commercial aircraft during the idle condition utilizing International Civil Aviation Organization ... -
Investigating the exergetic and environmental effects of subcooling and superheating processes on the performance of direct expansion systems
(Springer International Publishing, 2014)Recently, subcooling and superheating applications, which are proposed as an approach for the efficient use of energy, have positive effect on the emission next to increasing the energy efficiency. This study examines ... -
Climb Performance of Piston-Propeller Airplane with Cambered Wing and Variable Propeller Efficiency
(Amer Inst Aeronaut Astronaut, 2011)More accurate analytical solutions of the maximum rate of climb and maximum climb angle are proposed for the climbing flight of the piston-propeller airplane. For the solutions, it is assumed that the propeller efficiency ... -
Estimating Aircraft Fuel Flow for a Three-Degree Flight-Path-Angle Descent
(Amer Inst Aeronaut Astronaut, 2011)The objective of this study is to develop statistically significant models in order to determine the effects of altitude on fuel consumption of commercial aircraft during descent for a specific flight-path angle. In this ... -
Exergetic performance of a low bypass turbofan engine at takeoff condition
(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 analysis of an aircraft turbofan engine
(John Wiley & Sons LTD, 2007)The main objective of the present study is to perform an exergy analysis of a turbofan kerosene-fired engine with afterburner (AB) at sea level and an altitude of 11000 m. The main components of this engine include a fan, ... -
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 ... -
Constant altitude-constant Mach number cruise range of transport aircraft with compressibility effects
(Amer Inst Aeronaut Astronaut, 2006)An approximate solution of the constant altitude-constant Mach number cruise range for high subsonic speed flight of the turbojet/fan aircraft is proposed. The solution considers cambered wing drag polar of modern transport ... -
Experimental studies of particle packing and combustion behavior of the slip cast SiO2-Al-C system
(Kluwer Academic Publ, 2000)… -
An exergy way to quantify sustainability metrics for a high bypass turbofan engine
(Pergamon-Elsevier Science LTD, 2015)As fuel efficiency becomes a greater concern in aero engine design and operation. To meet this need, a new methodology is being developed here that proposes the use of exergetic metrics for mapping the exergy flows throughout ... -
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 ... -
Exergetic effects of some design parameters on the small turbojet engine for unmanned air vehicle applications
(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 ... -
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 ... -
Approximate solutions of range for constant altitude - constant high subsonic speed flight of transport aircraft
(Editions Scientifiques Medicales Elsevier, 2004)Approximate cruise range solutions are introduced for the constant altitude - constant high subsonic speed flight of turbojet/fan transport aircraft with cambered wing design. The variation of the specific fuel consumption ... -
Calculation of domestic flight-caused global warming potential from aircraft emissions in Turkish airports
(Inderscience Enterprises LTD, 2014)In this study, global warming potential (GWP) is calculated for aircrafts used in Turkish airports. The basic idea of this study is to investigate both emissions and their GWP values. This study is conducted in three steps, ...
