Sharif Digital Repository

Existing trend in the world transportation industries have created number of bottlenecks that in some cases have lead to substantial delays. Among which the most important one is the airport and how it is managed. This work investigates a new approach to increase an airport capacity in a procedural manner and without having to invest heavily on the infra-structure. The main objective of the work is to propose a sustainable approach to make use of military airports as a civilian one. In fact, we seek to define a model or process for the two major stakeholders (military airlines, civilian airlines) that guarantees a durable cooperation.Here, we have effectively made use of computer program... 

The airport terminal is difficult to plan and design due to the different components and the intricate complexity of its parts. At the airport terminal, we face a queue system which simulation is always a good way to analyze. In addition, computer simulation using modern softwares with the capability to model different types of systems, including the airport terminal, while being less realistic than analytical models, is less costly than operational Exercise.In this study, a supportive approach for better and specific management of Iranian airport terminal buildings with discrete-event simulation is proposed, considering the need for managing the airport terminals building in the country and... 

In the last few decades, the consumption of fossil fuels and its increasing worldwide price on one hand, and the severity of global warming on the other hand have led researchers and engineers to invent and expand new cooling technologies. Cooling has the largest portion of energy consumption of households during the hot season of a year. In addition to high energy consumption, the common cooling systems utilize gases which are harmful for environment. Thermoacoustics is a new and recent technology which has arised from combination of acoustics and thermodynamics. In Iran, research in this new field was pioneered by Ghorbanian in Department of Aerospace Engineering at Sharif University of... 

Airport saturation is one of the important issues which have always been of the specialists’ concern. One of the major applications of this subject is at the airport approach problems. While using current conventional approach procedures have many disadvantages regarding high fuel consumption and subsequent much environmental and noise pollution, the CDA concept which is one of the modern topics introduced in consequence of free flight theory, has less such disadvantages compared to conventional approach. Subject of this study is to investigate whether Procedural approach or CDA saturates an aiport sooner if the traffic flow increases. In this dissertation, using BADA database, CDA... 

Airports are one of the most important elements of the aviation system that provide the ground infrastructure that is required for enabling or flight across the globe. Master Planning is currently the dominant approach to airport strategic planning. However, history shows that this approach can often result in costly mistakes. Because there are many stakeholders with conflicting objectives, deep uncertainty about the future, and many potential strategies, planners often narrow their scope by using a single forecast for the future, leaving out alternative strategies, and excluding stakeholders, resulting in a Master Plan that quickly becomes obsolete and may be opposed by some stakeholders.... 

In this thesis departure programming are studied in general state and takeoff programming studied in special state. Departure programming consists of several parts that decisions for each part may influence in the other parts. Because of unforeseen delays this problem is a dynamic problem. Holding area is a part that overtaking operations performance before takeoff. An initial sequence obtained from ground controller. A heuristic algorithm that used in this thesis is a hybrid of constraint satisfaction and dynamic programming for minimizing sum of the total delays. The performance of the heuristic algorithm is compared with tabu search algorithm. The result shows that the proposed algorithm... 

The objective of this research is to develop a mathematical model for analysis and design of airport cities. In this model, the interactions among the elements of an airport city -regarded as a complex system- will be analyzed, and the impact of the stakeholders’ requirements on the functional and physical architecture of the airport city will be investigated. So as the first step, the stakeholders of the system and their requirements are identified and classified. Second, the concept of operation of the airport city is investigated, and then the architecture of the system is modeled as a queuing network. So that each element of the airport city is regarded as a service center, including the... 

Airports are critical connectors in the air transportation operational system. In order to meet their operational, economic and social obligations in a very volatile environment, airports need to embrace change rather than resist it. Long-term airport planning has become a complex issue due to the constant growth in air traffic demand. In this context, the thesis puts forward an innovative approach to planning and decision making for various component of airport.in this has been used fuzzy logic decision making method to develop airport in all respect in order to plan balanced growth. Top airports are successful experience in airport expansion planning which can be pattern for other airports... 

The only problem in aviation and airport development is the noise print on population groups surrounding airports due to its high frequency it is so annoying for human ear. In order to overcome this problem technology has reached its edge and the only alternative is to deviate terminal flight path.In this thesis I tried find a pattern for optimizing terminal flight path considering a Boeing 737-800 taking off from Mehrabad airport’s runway 29. To do this we were in need of a huge database of airplane low speed model, geographic information and population knowledge.The common approaches used by FAA and other international organizations for modeling low speed flight were used. The influence of... 

Airport Traffic Control Towers (ATCTs) are among the most critical structures in an airport that are expected to keep their level of serviceability after severe strong earthquakes. Therefore analysis and design of these structures need a detailed investigation on the seismic behavior of the structure based on the structural characteristics. In this study three different existing reinforced concrete ATCTs have been investigated. As important parameters of earthquake design of structures, response modification factor (R-factor) of these towers will be determined. R-factor reduces elastic force level to design force level and contains the effect of ductility, overstrength. In Iranian seismic... 

Nowadays active Millimeter Wave Imaging Systems are used in verity of medical and security applications. This widespread application re- sults from the intrinsic characteristic of electromagnetic waves in this rang of frequency that can penetrate through interior body structures and clothing with- out bringing harmful ionizing efects to the body. Millimeterwave systems can be very high resolution due to the relatively short wavelength. The current state-of-the-art in active millimeter-wave imaging systems use a set of transmit/receive antennae. The transmitter antennae illuminated the intended person with millimeter waves while the back scattered signal is recorded by the receiver antennae.... 

Inside an airport, proper Ground Handling Operations (GHO) plays a significant role in timely airplane departures as well as reducing operating costs. These operations consist of numerous processes that follow standard precedence to avoid delays. In this research, the issue of scheduling and allocation of resources for ground operations of the airport has been investigated. For this purpose, using a mathematical programming approach, a two-objective model was proposed to reduce delays and costs. In this model, all ground operation equipment were considered integrally under the standard operational precedence. Moreover, due to the uncertainty factor in the problem under study, an interval... 

Air transport system of each country consists of three interconnected elements (players); namely (1) Airlines, (2) Airports and (3) Air-Traffic Control. Any increase in the air transport capacity requires consistent growth in each sector. Obviously, any player can start such a process, but cannot continue without proper contribution of the other two. In this work, we study the process of growth capacity increase in the air-transportation system with an emphasis on the Airline characteristics. We show how the growth of an independent Airline will lead to the condition for which any subsequent investment will not have any effect on the quality of services provided by the system. We refer to...