Department of Aerospace Engineering, Conference / Seminar

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Recent Submissions

Strength analysis of a 5-m composite wind turbine blade under static and fatigue loading conditions Muyan, C.; Çöker, Demirkan (2020-10-23) © Published under licence by IOP Publishing Ltd.This study focuses on the static and fatigue strength analysis of the existing 5-m RUZGEM composite wind turbine blade with and without defect in the form of debonding. Puck ...
Arafazlı, Heterojen Mikroyapının Çok Seviyeli Homojenleştirme Yaklaşımı ile Modellenmesi Güzel, Dilek; Gürses, Ercan (null; 2020-09-09)
An adaptive flight controller design for a tilt-prop fixed wing uav for all flight modes Yayla, Metehan; Kutay, Ali Türker; Senipek, Murat; Gungor, Osman (2020-01-01) © 2020, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.In this study, we propose an autonomous flight control strategy (which is valid for all flight modes including vertical flight, hove...
Computational modelling and analysis of porous bleed holes at supersonic speeds Akar, Gökhan; Eyi, Sinan (2020-01-01) © 2020, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.Shock Wave / Boundary Layer Interaction is an important issue that should be taken into account when studying inlet design. Bleed ho...
MS Bladed Rüzgar Türbin Simülasyon Modeli ve Bazı Örnek Uygulamalar ŞAHİN, MUSTAFA (2019-12-14) Bu çalışma, pal elemanı momentum (BEM) teorisi üzerine kurulan MS (Mustafa SAHİN) Bladed Rüzgar Türbini Simülasyon Modelinin tanıtılması, özellikleri ve model ile yapılabilen bazı örnek uygulamaları göste...
COMPARATIVE STRUCTURAL OPTIMIZATION STUDY OF COMPOSITE AND ALUMINUM HORIZONTAL TAIL PLANE OF A HELICOPTER Arpacıoğlu, Bertan; Kayran, Altan (2019-11-11) This work presents structural optimization studies of aluminum and composite material horizontal tail plane of a helicopter by using MSC. NASTRAN SOL200 optimization capabilities. Structural design process starts from conc...
AEROELASTIC MODELING AND ANALYSIS OF HIGH ASPECT RATIO WINGS WITH DIFFERENT FIDELITY STRUCTURAL MODELS Çiçek, Gökçen; Kayran, Altan (2019-11-11) This paper is concerned with the aeroelastic modeling and analysis of high aspect ratio wings with large torsional deflections with different fidelity structural models. The approach for structural modeling presented here...
Numerical and Experimental Investigation of Rotor Aerodynamics In Ground Effect with Inclined Planes Şahbaz, Mehmet; Sezer Uzol, Nilay; Krtuluş, Dilek Funda (null; 2019-11-02) In this work, the ground effect phenomena for a rotary wing is investigated both numerically and experimentally. For this purpose, a test setup with scaled model helicopter rotor is established. The experimental setup give...
SHIP AIRWAKE INVESTIGATIONS ON SFS2 WITH A HOVERING HELICOPTER ROTOR BY COMPUTATIONAL FLUID DYNAMICS SIMULATIONS Orbay Akcengiz, Ezgi; Sezer Uzol, Nilay (2019-10-30) In this study, Computational Fluid Dynamics simulations of ship airwake for a simple ship geometry are performed for the horizontal and inclined deck configurations and also with and without the helicopter rotor hovering o...
Main Rotor - Tail Rotor Interactional Noise Atalay, Mehmet Melih; Şenipek, Murat; Yücekayalı, Arda; Özyörük, Yusuf (2019-10-30) In this paper, effects of main rotor – tail rotor interactions on noise characteristics are investigated for a typical 10 ton class helicopter. Evaluations are performed at hover and quartering flight conditions with top-f...
Flow field characteristics of translating and revolving flexible wings Yazdanpanah, Mahdi; Hazaveh, Hooman Amiri; Perçin, Mustafa; Van De Meerendonk, Remco; Van Oudheusden, Bas W. (null; 2019-10-20) This study explores the effects of rotational mechanisms on the characteristics of the leading edge vortex (LEV) by comparing translating and revolving flexible wings that are started from rest. Tomographic particle image...
Rüzgar Türbini Kanat Yunuslama Açısı Kontrolcüsü Tasarımı Ve Performans Analizi ŞAHİN, MUSTAFA; YAVRUCUK, İLKAY (2019-10-05) Bu çalışma, MS (Mustafa ŞAHİN) Bladed Rüzgar Türbin Simülasyon Modeli kullanılarak, NREL 5 MW’lık rüzgar türbini için lineer bir kanat yunuslama açısı kontrolcüsünün tasarımı, türbin kontrollerinde kullanılan bir kazanç çi...
Yatay eksenli rüzgâr türbinleri için gürbüz tasarım yöntemi Altuğ Yalçın, Ayşe Hazal; Yavrucuk, İlkay; Uzol, Oğuz (null; 2019-10-03) Gürbüz tasarım, kontrol edemediğimiz değişkenlerden çok etkilenmeyen tasarımdır ve rüzgarın stokastik yapısı dolayısıyla rüzgar türbinleri için önemlidir. Bu makalede enerji maliyetini düşürebilmek için yatay eksenli rüzga...
RÜZGAR TÜRBİNİ ROTORLARI İÇİN KALIN KANAT PROFİLLERİNİN HAD SİMÜLASYONLARI ORBAY AKCENGİZ, EZGİ; SEZER UZOL, NİLAY (null; 2019-10-03) Bu çalışmada rüzgar türbini rotorlarında kullanılan çeşitli kalın kanat profillerinin üzerindeki akış simülasyonları daimi ve zamana bağlı Hesaplamalı Akışkanlar Dinamiği (HAD) kullanılarak yapılmıştır. Kalın kanat profill...
Gas Turbine Blade Cooling Technology, Advances, and Challenges Kahveci, Harika Senem (null; 2019-09-30) Continuous advances in cooling technologies have become necessary since the engine thermal efficiency and power output increase significantly with an increase in the turbine inlet temperature. This study explains blade coo...
Performance Comparison of two turbine blade pitch controller design methods based on equilibrium and frozen wake assumption, Şahin, Mustafa ; Yavrucuk, İlkay (2019-09-20) This paper focuses on the design methods of two different gain-scheduled collective blade pitch controllers for a 5 MW horizontal axis wind turbine using equilibrium and frozen wake assumptions. The design and performance ...
Numerical investigation of a Hawkmoth wing undergoing pure plunge motion in hover Bektaş, Mürvet; GÜLER, MEHMET ALİ; KURTULUŞ, DİLEK FUNDA (2019-09-20) The aerodynamic phenomena of the flapping motion in hover mode is widely considered in micro air vehicle (MAV) applications. In this study, the aerodynamics of a three-dimensional rigid wing mimicked from the hawkmoth Mand...
Comparison of Fully Coupled and DecoupledModeling Results of Graphite Ablation In Hypersonic Flows Onay, Oğuz; Eyi, Sinan (2019-09-20) A thermochemical ablation modeling tool is developed for graphite material in air for reactive hypersonic flows. Multi-species and axisymmetric Navier-Stokes equations are solved for the flow field analysis. Arrhennius typ...
A NUMERICAL ASSESSMENT OF ATMOSPHERIC BOUNDARY LAYER SIMULATION INSIDE TWO DIFFERENT BOUNDARY LAYER WIND TUNNELS Abdulrahim, Anas; Elfarra, Munir; Uzol, Oğuz (null; 2019-09-20) A new large scale wind tunnel is under development at METU Center for Wind Energy (RÜZGEM). This wind tunnel is a closed-loop multi-purpose wind tunnel with a 3 m x 7 m x 20 m boundary layer test section. Inside this test ...
Aerodynamic Performance Analyses of Iced Wind Turbine Blade Profile with Transitional DDES Yalçın, Özgür; Yırtıcı, Özcan; Özyörük, Yusuf; Tuncer, İsmail Hakkı (null; 2019-09-20)