Department of Aerospace Engineering, Thesis

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Thesis (619)

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Author
Avcıoğlu, Sevil (2)
Ayan, Erdem (2)
Baş, Onur (2)
Cengiz, Kenan (2)
Durmuş, Gökhan (2)

Subject
Aerospace engineering. (59)
Airplanes (48)
Aerodynamics. (42)
Aeronautics. (40)
Computational fluid dynamics. (37)

Date Issued
1987 - 1989 (9)
1990 - 1999 (75)
2000 - 2009 (156)
2010 - 2019 (341)
2020 - 2021 (38)

Recent Submissions

Experimental and numerical investigation of fretting failure in lug-bush members under cyclic loading
Özen, Emine Burçin; Çöker, Demirkan; Department of Aerospace Engineering (2021-7)
In this study, experimental and numerical work to investigate the mechanisms occurring at the contact region of the lug-bush members under cyclic loading are presented. Post-mortem macroscopic and microscopic investigation...
Attitude and Orbit Control of a Solar Sail Spacecraft for Responsive Operational Concept
Polat, Halis Can; Tekinalp, Ozan; Department of Aerospace Engineering (2021-6-15)
Utilization of the propellant-free thrust capability of Solar Sail Spacecraft (SSS) is addressed. For this purpose, an elliptical orbit with a very low perigee altitude and an apogee altitude high enough to have solar sail...
ESTIMATION OF AERODYNAMIC LOADS OF A PROPELLER THROUGH IMPROVED BLADE ELEMENT AND MOMENTUM THEORY AND PROPELLER DESIGN OPTIMIZATION
KAYA, DERYA; Kutay, Ali Türker; Department of Aerospace Engineering (2021-6)
This study focuses on accurate prediction of total forces and moments acting on a propeller in all flight conditions through Blade Element and Momentum Theory (BEMT) and design optimization of a UAV propeller. Under vario...
Adjoint Based Aerodynamic Shape Optimization of Subsonic Submerged Intake
AHMED, ALI; Tuncer, İsmail Hakkı; Department of Aerospace Engineering (2021-5-04)
In this study the aerodynamic shape optimization of subsonic submerged intake is performed. The total pressure at the aerodynamic interface plane and lift are employed as objective functions. Drag is constrained and emp...
Full Envelope Nonlinear Controller Design for a Novel Electric VTOL(eVTOL) Air-taxi via INDI Approach Combined with CA
Suiçmez, Emre Can; Kutay, Ali Türker; Department of Aerospace Engineering (2021-5)
On-demand urban air mobility (UAM) has become very popular in recent years with the introduction of the electric vertical take-off and landing (eVTOL) aircraft concept. Thanks to the key advantages of electric propulsion (...
Buffet investigation on airfoils
Algül, Kezban Gizem; Özgen, Serkan; Department of Aerospace Engineering (2021-4)
The aim of the present thesis is to investigate buffet onset characteristics in two-dimensional flow. NACA0012 airfoil was chosen as the geometry in this study since the profile is frequently used for the lifting surfaces ...
Aerodynamic shape optimization of a wing using 3d flow solutions with su2 and response surface methodology
Yıldırım, Berkay Yasin; Tuncer, İsmail Hakkı; Department of Aerospace Engineering (2021-4)
In this study, the aerodynamic shape optimization of a wing is performed by using 3D flow solutions together with response surface methodology. The purpose of this study is to optimize the aerodynamic shape of a wing to ac...
Kill analysis tool for missiles equipped with proximity fuzes
Öztürk, Ece; Kutay, Ali Türker; Department of Aerospace Engineering (2021-3-18)
In this thesis study, a developed kill analysis tool for the missiles having proximity fuzes is presented. Some of today’s missiles have proximity fuze, and this type of missiles’ warhead can be detonated not when the miss...
Control allocation for a multi-rotor e-vtol aircraft using blended-inverse
Aksoy, Emre; Yavrucuk, İlkay; Department of Aerospace Engineering (2021-2-25)
In this thesis, the control allocation problem in a flight control system design for a multi-rotor eVTOL (electric Vertical Takeoff and Landing) aircraft is proposed. The vehicle consists of 20 identical rotors that are us...
Examining 10th grade students’ problem solving processes in geometry using eye tracking technology
Malcı, Emine; Tokel, Saniye Tuğba; Department of Aerospace Engineering (2021-2-15)
This study examines the problem-solving strategies of 10th-grade high school students and changes in their eye movements during problem-solving in geometry. Eight 10th-grade students participated in this study. Spatial Abi...
An intelligent design approach trained by fabrication techniques
Sönmez, Ayça; Sorguç, Arzu; Department of Aerospace Engineering (2021-2-15)
The developments in recent technologies through Industry 4.0 lead to the integration of digital design and manufacturing processes. While manufacturing is becoming an essential input of the design, it is usually considered...
Artificial neural network based tool for buckling loads of integrally stiffened aircraft structural panels
Güzel, Selçuk; Gürses, Ercan; Department of Aerospace Engineering (2021-2-15)
The sudden change in the load carrying capacityunder compresive loading, called buckling,may cause catastrophic failures. Therefore, determination of the first buckling and collapse loads of structural elements is ...
Improvement of finite element model by using sine vibration test results of acommunication satellite
Çekiç, Abdulkadir; Yaman, Yavuz; Department of Aerospace Engineering (2021-2-15)
In this thesis, the vibration analysis of a communication satellite is performed,and the improvementof the finite element model by using vibration test results is presented. First, the satellite finite element mode...
Exploring futures with world building in design education: building and applying a theoretical model through action research
Çağlar, Emre; Hasdoğan, Gülay Fatma; Department of Aerospace Engineering (2021-2-12)
Design students are often engaged with future contexts, as design education encourages them to explore different contexts and understand the implications of their activities. These explorations are done in what is called a...
Helicopter lobed nozzle optimization with differential evolution method
Bayat, Akay; Perçin, Mustafa; Department of Aerospace Engineering (2021-2-11)
The main purpose of this study is to develop a methodology for the optimization of an ejector system geometry that is used for the helicopter engine bay cooling. The performance of an ejector system is directly related to ...
Evaluation of guidance methods for a swarm of munitions
Muhiddinoğlu, Abdullah Alp; Tekinalp, Ozan; Department of Aerospace Engineering (2021-2-10)
In this study, collective flight, mission execution and decision-making algorithm for airdrop micro munitions with two different swarm algorithm alternatives are examined. Through a concept munition design is created and a...
Design of a vision-based three-axis attitude estimation algorithm for small satellites
Güzel, Mehmet Burak; Tekinalp, Ozan; Söken, Halil Ersin; Department of Aerospace Engineering (2021-2-8)
Equipment and budget limitations of satellite missions encourages researchers to use on-board equipment for multiple tasks. Camera stands out as an ideal equipment that can be used for multiple purposes in satellites makin...
Source identification of pesticide pollution and determination of normal background concentrations of metals in yeşilırmak river basin
Yanar, Büşra Selin; Yetiş, Ülkü; Dilek, Filiz Bengü; Department of Aerospace Engineering (2021-2-08)
Surface watersare one of the most vulnerable environmental compartment to the pollutionpressures arisingfrom numerous pointand nonpointsources.In this thesis, pesticide pollution and metal pollution as being two maj...
Pattern reconfigurable antenna designs insub-6 ghz band for 5g applications
Çelik, Feza Turgay; Aydın Çivi, Hatice Özlem; Alatan, Lale; Department of Aerospace Engineering (2021-2-08)
In this thesis, design,simulations,fabrication, and radiation pattern measurementsof reconfigurable antennas for sub-6GHz application of 5G protocol are presented. Modeanalysis techniquesand array theory areemployed...
A case study on middle school students' visions of nature
Başer, Ceren; Şahin, Elvan; Department of Aerospace Engineering (2021-2-5)
The purpose of the study is to investigate middle school students’ visions of nature including images of nature, values of nature and images of human-nature relationship. Participants were selected from middle school stude...
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