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Browsing Department of Aerospace Engineering / Havacılık ve Uzay Mühendisliği by Title

Browsing Department of Aerospace Engineering / Havacılık ve Uzay Mühendisliği by Title

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  • 3D-Printed Graphene-Based Bow-Tie Microstrip Antenna Design and Analysis for Ultra-Wideband Applications 
    Avsar Aydin, Emine (POLYMERS / MDPI, 2021-11)
    In this study, the effects of graphene and design differences on bow-tie microstrip antenna performance and bandwidth improvement were investigated both with simulation and experiments. In addition, the conductivity of ...
  • A novel 3D printed curved monopole microstrip antenna design for biomedical applications 
    Bicer, Mustafa Berkan; Aydin, Emine Avsar (PHYSICAL AND ENGINEERING SCIENCES IN MEDICINE / SPRINGER, 2021-12)
    This paper proposes a novel and compact monopole microstrip antenna design with a three-dimensional (3D) printed curved substrate for biomedical applications. A curved substrate was formed by inserting a semi-cylinder ...
  • A PRELIMINARY STUDY FOR EARLY BREAST CANCER DETECTION WITH MICROWAVES 
    Avsar Aydin, Emine (TEHNICKI GLASNIK-TECHNICAL JOURNAL / UNIV NORTH, 2018-06)
    Breast cancer is the most common type of cancer in female all over the world. Early detection and treatment gives a chance to overcome this cancer. In breast cancer detection, there are many methods such as X-ray mammography, ...
  • AN APPROXIMATE SOLUTION FOR THE PLANE WAVE DIFFRACTION BY AN IMPEDANCE STRIP: H-POLARIZATION CASE 
    Aydin, Emine Avsar; Ikiz, Turgut (TEHNICKI GLASNIK-TECHNICAL JOURNAL / UNIV NORTH, 2016-12)
    In this study, the diffraction of H-polarized plane wave by an infinitely long strip which has the same impedance on both faces with a width of 2a is investigated by using an analytical-numerical method. The diffracted ...
  • Approximate Factorization Method Using Alternating Cell Direction Implicit Method Comparison of Convergence Characteristics Using Basic Model Equations 
    Cete, Ali Ruhsen (KUWAIT JOURNAL OF SCIENCE / ACADEMIC PUBLICATION COUNCIL, 2021-07)
    In this paper, a fast implicit iteration scheme called the alternating cell directions implicit (ACDI) method is combined with the approximate factorization scheme. The use of fast implicit iteration methods with unstructured ...
  • Classical flutter analysis of composite wind turbine blades including compressibility 
    Farsadi, Touraj; Kayran, Altan (WIND ENERGY / WILEY, 2021-01)
    For wind turbine blades with the increased slenderness ratio, flutter instability may occur at lower wind and rotational speeds. For long blades, at the flutter condition, relative velocities at blade sections away from ...
  • Classification of Punctures on Complete Flat Surfaces 
    Saglam, Ismail (International Electronic Journal of Geometry (IEJG) / Kazım İLARSLAN, 2021-10)
    We investigate the behavior of a complete flat metric on a surface near a puncture. We call a puncture on a flat surface regular if it has a neighborhood which is isometric to that of a point at infinity of a cone. We prove ...
  • Complete flat cone metrics on punctured surfaces 
    Saglam, Ismail (TURKISH JOURNAL OF MATHEMATICS / SCIENTIFIC TECHNICAL RESEARCH COUNCIL TURKEY-TUBITAK, 2019)
    We prove that each complete flat cone metric on a surface with regular or irregular punctures can be triangulated with finitely many types of triangles. We derive the Gauss-Bonnet formula for this kind of cone metrics. In ...
  • Dynamic response of filament winding angle on complex shaped mandrels 
    Torun, Ahmet Refah (INDUSTRIA TEXTILA / INST NATL CERCETARE-DEZVOLTARE TEXTILE PIELARIE-BUCURESTI, 2020-10)
    Aerodynamic parts such as rocket nose and heat shield related composites are mainly produced with filament winding machines. Winding angle of the reinforcement filament is the main parameter to determine the thermomechanical ...
  • EVALUATION OF LIMESTONE LAYER'S EFFECT FOR UWB MICROWAVE IMAGING OF BREAST MODELS USING NEURAL NETWORK 
    Aydin, Ahmet; Avsar Aydin, Emine (TEHNICKI GLASNIK-TECHNICAL JOURNAL / UNIV NORTH, 2017-07)
    X-ray mammography is widely used for detection of breast cancer. Besides its popularity, this method did not have the potential of discriminating a tumor covered with limestone from a pure limestone mass. This might cause ...
  • Evaluation of Perception and Attitudes towards Hybrid Vehicles: A Developing Country Approach 
    Torun, Ahmet Refah; Yigit, Ahmet Batuhan (OPUS © Uluslararası Toplum Araştırmaları Dergisi = International Journal of Society Researches / İdeal Kent Yayınları, 2019-09)
    The perceptions and attitudes of the society and potential consumers is a major issue to adopt energy-sustainable product innovations. Current critical issues such as global warming, reducing energy sources and air pollution ...
  • Fault tolerant control of a quadrotor based on incremental nonlinear dynamic inversion 
    Ahmadi Dastgerdi, Karim; Asadihendoustani, Davood; Nabavi Chashmi, Seyed Yaser (International Journal of Aeronautics and Astronautics (IJAA) / Selçuk Üniversitesi, 2022-04)
    The multirotor unmanned aerial vehicles (UAVs) have rapidly attracted interest of the researchers since they play a unique role in a variety of areas including the military, agriculture, rescue, and mining. Actuator fault ...
  • From Euclidean triangles to the hyperbolic plane 
    Saglam, Ismail (EXPOSITIONES MATHEMATICAE / ELSEVIER GMBH, 2022-06)
    We introduce a model of the hyperbolic plane which arises from Thurston's ideas on best Lipschitz maps between surfaces. More precisely, we apply Thurston's theory to the space of Euclidean triangles. We prove that the ...
  • Image processing based autonomous landing zone detection for a multi-rotor drone in emergency situations 
    Turan, Veysel; Avsar, Ercan; Asadihendoustani, Davood; Avsar Aydin, Emine (Turkish Journal of Engineering / Murat YAKAR, 2021-10)
    Flight safety and reliability improvement is an important research issue in aerial applications. Multi-rotor drones are vulnerable to motor failures leading to potentially unsafe operations or collisions. Therefore, ...
  • İkiz Tabliyeler Arasındaki Akışın Dairesel Kesitli Çubuk ile Kontrol Edilmesi 
    Durhasan, Tahir (Çukurova Üniversitesi Mühendislik-Mimarlik Fakültesi Dergisi = Cukurova University Journal of the Faculty of Engineering / Çukurova Üniversitesi, 2019-03)
    Bu çalışmada, uzun açıklıklı ikiz tabliyeler arasındaki akışın dairesel kesitli çubuk ile kontrol edilmesi hedeflenmiştir. İki tabliye arasındaki mesafenin tabliye yüksekliğine oranı L/H=1,7 ve dairesel kesitli çubuğun ...
  • Kavisli Delikli Plaka ile Girdap Kaynaklı Türbülanslı Akışın Kontrolü 
    Ozkan, Gokturk Memduh; Durhasan, Tahir; Pinar, Engin (Çukurova Üniversitesi Mühendislik-Mimarlik Fakültesi Dergisi = Cukurova University Journal of the Faculty of Engineering / Çukurova Üniversitesi, 2020-12)
    Bu çalışmada, dairesel bir silindir art izinde oluşan girdap kaynaklı türbülanslı akışın, farklı ve kısmi geçirgenlik oranlarına sahip kavisli delikli plaka (kontrol elemanı) ile kontrolü incelenmiştir. Ele alınan parametre ...
  • NACA 0015 Kanat Profilinin Etrafındaki Akışın Firar Kenarından Akış Emme ile Kontrol Edilmesi 
    Durhasan, Tahir (Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi = Bilecik Seyh Edebali University Journal of Science / Bilecik Şeyh Edebali Üniversitesi, 2019-09)
    Bu çalışmada, kanat firar kenarında uygulanan akış emme yönteminin NACA 0015 kanat profilinin aerodinamik performansı üzerine etkileri sayısal çalışma ile araştırılmıştır. Sayısal çözümler Reynolds sayısının Re=48000 ...
  • On the Moduli Space of Flat Tori Having Unit Area 
    Saglam, Ismail (International Electronic Journal of Geometry (IEJG) / Kazım İLARSLAN, 2021-04)
    Inspiring from Thurston's asymmetric metric on Teichmüller spaces, we define and study a natural (weak) metric on the Teichmüller space of the torus. We prove that this weak metric is indeed a metric: it separates points ...
  • Passive Flow Control around NACA 0018 Airfoil Using Riblet at Low Reynolds Number 
    Guler, Emre; Durhasan, Tahir; Karasu, Ilyas; Akbiyik, Hurrem (Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi (FBED) = Journal of The Institute of Science and Technology (JIST) / Iğdır Üniversitesi, 2021-09)
    In this study, aerodynamic capabilities of NACA 0018 airfoil is numerically investigated by installing riblet on the suction side of airfoil. Numerical results were obtained by ANSYS Fluent using k-kl-kw transition model ...
  • Passive Flow Control over an Airfoil by Control Rod at Low Reynolds Number 
    Durhasan, Tahir (JOURNAL OF APPLIED FLUID MECHANICS / ISFAHAN UNIVERSITY TECHNOLOGY, 2020-11)
    In the present study, the flow control mechanism of SD7062 airfoil by a rod illustrated using Particle image velocimetry (PIV) technique at pre-stall angles of attack at Reynolds number of Re = 30000. The rod was installed ...

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