Department of Aerospace Engineering

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Yaman, Yavuz (111)
Çöker, Demirkan (101)
Tuncer, İsmail Hakkı (100)
Şahin, Melin (93)
Tekinalp, Ozan (88)

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Aerospace Engineering (60)
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Aerospace engineering. (59)
Airplanes (48)
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2020 - 2022 (159)

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Recent Submissions

Fatigue and static damage in curved woven fabric carbon fiber reinforced polymer laminates
Tasdemir, Burcu; Çöker, Demirkan (2022-06-01)
Failure mechanisms of curved cross-ply laminates under static and fatigue loading have been studied extensively, but the examination of fabric laminates which are the most commonly used ply type in curved supports in airpl...
Critical Angle and Fundamental Frequency of Symmetric Airfoils at Low Reynolds Numbers
Kurtuluş, Dilek Funda (2022-05-01)
The unsteady vortex evolution of NACA 0012 airfoil is numerically investigated at low angles of attack ranging from 0 degrees to 10 degrees where the separation is performed from the trailing edge. The Reynolds number rang...
Single channel digital controller design for a high spinning rate rolling airframe missile
Suicmez, E. C.; Kutay, Ali Türker (2022-04-01)
Spinning/Rolling Airframe Missiles (RAM) mostly use an analog (ON-OFF type) control approach that deflects control surfaces (fins) at minimum and maximum positions continuously, and control is achieved by applying phase sh...
Development of a prediction model using fully connected neural networks in the analysis of composite structures under bird strike
Hasilci, Zehra; BOĞOÇLU, Muharrem Erdem; DALKILIÇ, Ahmet Selim; Kayran, Altan (2022-02-01)
Bird strike is one of the most hazardous issues facing global aviation. In the present study, a hybrid methodology is developed utilizing, automated data generation and fully connected neural networks to practically and re...
EFFECTS OF INFLOW BOUNDARY LAYER ON THE WAKE CHARACTERISTICS OF A RADIALLY NON-UNIFORM POROUS DISC
Abdulrahim, Anas; Uzol, Oğuz; Perçin, Mustafa; Department of Aerospace Engineering (2022-1-03)
This thesis study presents the results of an experimental investigation focusing on the effects of inflow boundary layer on the wake characteristics of a porous disc (disc diameter-to-boundary layer height is 0.2) with rad...
Discrete Adjoint-Based Aerodynamic Shape Optimization Framework for Natural Laminar Flows
Kaya, Halil; Tuncer, İsmail Hakkı (2022-01-01)
Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.An adjoint-based aerodynamic shape optimization framework for natural laminar flows is developed. The laminar to turbulent-transiti...
A Two-Level Homogenization Approach for Polymer Nanocomposites with Coated Inclusions
GÜZEL, DİLEK; Gürses, Ercan (2022-01-01)
In polymer nanocomposites, other than the matrix and inclusion, a third phase so-called interphase, is commonly observed. Inter-phase properties affect the overall macroscopic mechanical behavior. It is crucial to model th...
Experimental Analysis and Multiscale Modeling of the Dynamics of a Fiber-Optic Coil
Kahveci, Oezkan; Gencoglu, Caner; Yalçınkaya, Tuncay (2022-01-01)
Fiber-optic gyroscopes (FOGs) are common rotation measurement devices in aerospace applications. They have a wide range of diversity in length and in the winding radius of the coil to meet system requirements. Every dimens...
Design and aerodynamic analysis of a VTOL tilt-wing UAV
Cakir, Hasan; Kurtuluş, Dilek Funda (2022-01-01)
The aerodynamic design and analysis of an Unmanned Air Vehicle, capable of vertical take-off and landing by employing fixed four rotors on the tilt-wing and two rotors on the tilt-tail, will be presented in this study. Bot...
DEVELOPMENT OF AN INDOOR REACTIVE NAVIGATION METHOD USING SPHERICAL IMAGES
Şahin, Yiğit; Koku, Ahmet Buğra; Department of Aerospace Engineering (2021-12-29)
An algorithm for visual topological localization and navigation is proposed. Landmark detection and tracking is performed in successive frames to determine angular changes between repetitive and salient features. This angu...
Experimental and analytical investigation of the size effect on the strength of open hole composite laminates
Gezer, Ali; Çöker, Demirkan; Department of Aerospace Engineering (2021-12-10)
In this thesis, we investigate the effect of size on the strength of open hole composite laminates using experimental and analytical approaches. The size effect consists of the effect of thickness and hole size while keepi...
Multiscale modelling for fusion and fission materials: The M4F project
Malerba, L.; et. al. (2021-12-01)
The M4F project brings together the fusion and fission materials communities working on the prediction of radiation damage production and evolution and their effects on the mechanical behaviour of irradiated ferritic/marte...
Void growth based inter-granular ductile fracture in strain gradient polycrystalline plasticity
Tandogan, I. T.; Yalçınkaya, Tuncay; Ozdemir, I (2021-12-01)
The precipitation hardened, high strength aerospace alloys (e.g. Al 7000 alloy series) suffer from loss of fracture toughness due to the heat treatment leading to intergranular ductile fracture. Depending on the quenching ...
Understanding mechanical failure of graphite rocket nozzle throats under thermal stresses
Nigar, Barış; Dönmez, Serhan; Çöker, Demirkan; Özerinç, Sezer (2021-12-01)
© 2021 Elsevier Masson SASMechanical failure of graphite nozzle throats is a common problem of rocket engines. The extreme operating conditions constitute the main cause of the problem, resulting in thermal shock-induced c...
Weight reduction of an unmanned aerial vehicle pylon fitting by topology optimization and additive manufacturing with electron beam melting
Yilmaz, Fatih; Şahin, Melin; Gürses, Ercan (2021-12-01)
Aerodynamic Performance Predictions of Martian Helicopter Co-Axial Rotor in Hover by using Unsteady CFD Simulations
Küçükoğlu, Onur; Sakaoğlu, Sergen; Sezer Uzol, Nilay (2021-11-25)
Numerical Validation Study of a Helicopter Rotor in Hover by using SU2 CFD Solver
Sunay, Yunus Emre; Sezer Uzol, Nilay (2021-11-25)
ADJOINT-BASED AERODYNAMIC SHAPE OPTIMIZATION OF A STRAKE-DELTA WING CONFIGURATION
Yutük, Kaan; Tuncer, İsmail Hakkı; Department of Aerospace Engineering (2021-11-8)
Modern fighter aircraft compulsorily demand high maneuverability capability, which is mainly provided by an improved aerodynamic performance at high angles of attack. This is achieved by mostly employing strakes and canard...
Vortex flow aerodynamics behind a symmetric airfoil at low angles of attack and Reynolds numbers
Kurtuluş, Dilek Funda (2021-11-01)
The low Reynolds number aerodynamics is important to investigate for micro air vehicle applications. The current paper covers numerical simulations to present the downstream development of the wake patterns and detailed an...
DELAYED DETACHED-EDDY SIMULATION BASED PREDICTIONS OF BOUNDARY LAYER TRANSITION AND CAVITY FLOW NOISE
Yalçın, Özgür; Özyörük, Yusuf; Department of Aerospace Engineering (2021-11-1)
This dissertation investigates the boundary layer transition as well as the cavity flow noise prediction capabilities of a high-order in-house solver using various Delayed Detached-Eddy Simulation (DDES) frameworks. Before...
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