Department of Aerospace Engineering, Article

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Recent Submissions

An adaptive phase field model for high cycle fatigue analysis across specimen geometries Chen, Guangxu; Erdoğan, CAN; Yalçınkaya, Tuncay; Wang, Xianqiao; Tang, Keke (2025-12-01) High cycle fatigue behavior of components with notches and cracks, which are common in engineering applications, is significantly influenced by geometrical size effect and complicates accurate fatigue life prediction. Trad...
Analysis of the size effect in the nanoscratching process of single crystalline and polycrystalline materials Günay, Enes; Yalçınkaya, Tuncay (2025-12-01) In tribology, nanoscratch testing is used to evaluate the mechanical and tribological properties of materials by employing a nanoscale indenter. At this scale, size-dependent plasticity effects, particularly those related ...
Post heat treatment optimization of cold spray additive manufactured Inconel 718 Karakas, Aptullah; Ataee, Arash; Rathi, Amit; Fenercioglu, Tevfik Ozan; Erdoğan, Can; Yalçınkaya, Tuncay (2025-12-01) The cold spray technique has recently emerged as an additive manufacturing method for producing free-standing parts, in addition to its use in repair and coating applications. Manufacturing relatively hard alloys such as I...
Accurate Computation of Multiphase Flows with high-density and pressure ratios using Smoothed Particle Hydrodynamics ERBAŞ, MURAT; Atcı, Metehan; Karaca, Mehmet; BIYIKOĞLU, ATİLLA (2025-10-30) This article discusses the applications of the smoothed particle hydrodynamics (SPH) methods to propose adaptations for compressible flow problems, particularly with discontinuities: shock tube, cavitation shock tube, and ...
A New Methodological Approach to the Reachability Analysis of Aerodynamic Interceptors Bayoğlu Akalın, Tuğba; Akalın, Gökcan; Kutay, Ali Türker (2025-08-01) Advanced air defense methods are essential to address the growing complexity of aerial threats. The increasing number of targets necessitates better defensive coordination, and a promising strategy involves the use of inte...
Surrogate-Based Deep Reinforcement Learning for Active Flow Control on Slender Bodies Arslan, Kivanc; Özgen, Serkan (2025-07-23) Slender bodies are a fundamental element in the design of aerospace vehicles for a wide range of applications. This study investigates the application of active flow control to manage asymmetric vortex-induced side forces ...
Microstructure Based Analysis of Plasticity and Failure of Dual Phase Steels Çelikses, Eren; Yelek, İbrahim; Özdemir, Merthan; Yalçınkaya, Tuncay (2025-07-01)
An experimental investigation of the effects of a boundary layer inflow on the wake characteristics of a model wind turbine and a porous disk Öztürk, Buğrahan; Hassanein, Abdelrahman; Akpolat, M. Tuğrul; Abdulrahim, Anas; Perçin, Mustafa; Uzol, Oğuz (2025-07-01) This paper presents the results of an experimental study that focuses on the details of the wake development characteristics of a model wind turbine and a porous disk under boundary layer inflow conditions. Measurements ar...
Error Covariance Analyses for Celestial Triangulation and Its Optimality: Improved Linear Optimal Sine Triangulation Muratoğlu, Abdurrahim; Söken, Halil Ersin; Soergel, Uwe (2025-04-01) This study presents an improved methodology for celestial triangulation optimization in spacecraft navigation, addressing limitations in existing approaches. While current methods like Linear Optimal Sine Triangulation (LO...
Investigation of Variable Taper Angle Design in Highly Tapered Laminates for Delaying Delamination Ergin, Fırat; Kayran, Altan (2025-03-01) Specific requirements in aircraft components may necessitate the use of high taper angles in the thickness transition region of composite laminates, leading to early delamination initiation at the thin side of the taper re...
Visual Navigation for Lunar Missions Using Sequential Triangulation Technique Muratoğlu, Abdurrahim; Söken, Halil Ersin; Tekinalp, Ozan (2025-03-01) A vision-aided autonomous navigation system for translunar missions based on celestial triangulation (Earth and Moon) is proposed. Line-of-Sight (LoS) vectors from the spacecraft to celestial bodies, retrieved using epheme...
A Data-Driven Approach for the Prediction of Reynolds Number Effects on Wind Turbine Airfoil Aerodynamic Polars Özgören, Ahmet Can; Uzol, Oğuz (2025-03-01) This study presents a data-driven approach to extrapolate and predict Reynolds number effects on wind turbine airfoil polars. For this purpose, a database is created using experimentally obtained aerodynamic coefficients f...
Comparative Aerodynamic Analysis and Parallel Performance of 2D CFD Simulations of a VAWT Using Sliding Mesh Interface Method Önel, Hüseyin Can; Adam, Ali Ata; Sezer Uzol, Nilay (2025-02-01) With rapid advancements in computer hardware and numerical modeling methods, Computational Fluid Dynamics (CFD) has gained prominence in simulating complex flows. As parallel computation becomes an industry standard, the c...
Artificial neural network for the evaluation of electric propulsion system in unmanned aerial vehicles Goli, Srikanth; Kurtuluş, Dilek Funda; Waqar, Muhammad; Imran, Imil Hamda; Alhems, Luai M.; Kouser, Taiba; Memon, Azhar M. (2025-01-01) In the domain of unmanned aerial vehicles (UAVs), evaluating electric propulsion systems is pivotal for enhancing performance and efficiency. This study employs a scaled conjugate gradient (SCG) algorithm to train an artif...
Surrogate model based optimization of variable stiffness composite wingbox for improved buckling load with manufacturing and failure constraints Inci, Hasan; Kayran, Altan (2025-01-01) The buckling load of a wingbox is maximized by applying different automatic fiber placement (AFP) strategies on the skins of the wing having NACA 4412 airfoil profile. Specifically, the effect of single, dual and three reg...
Modeling of the Stress Path-Dependent Strain Ratcheting Behaviour of 304L Stainless Steel Through Crystal Plasticity Frameworks Açar, Sadık Sefa; Yalçınkaya, Tuncay (2025-01-01) This study investigates the strain ratcheting behavior of 304L stainless steel under complex stress-controlled cyclic loading conditions employing crystal plasticity models in the DAMASK framework. Strain ratcheting, a phe...
Finite Time Sliding Mode Control for Chattering Reduction in Unmanned Aerial Vehicles with Dynamic Payloads Imran, Imil Hamda; Kurtuluş, Dilek Funda; Kouser, Taiba; Memon, Azhar M.; Alhems, Luai Muhammad; Goli, Srikanth (2025-01-01) This study proposes a finite-time tracking control system for an unmanned aerial vehicle (UAV) in the presence of dynamic payloads and external disturbances. Changes in payload result in time-varying parametric uncertainti...
Design optimization of a fluidic thrust vectoring system based on coanda effect using meta-models Kara, Emre; Kurtuluş, Dilek Funda (2024-12-30) In this study, parametric optimization is employed to identify optimal output parameters for physical components of HOMER nozzle type fluidic thrust vectoring (FTV) system. Optimization study is conducted on seven output p...
Relative position estimation using modulated magnetic field for close proximity formation flight Shibata, Takuma; Söken, Halil Ersin; Sakai, Shin-ichiro (2024-12-01) This paper presents a method to estimate relative position vectors between spacecraft equipped with magnetic coils and magnetic field sensors for close proximity operation. Filters can segregate a magnetic field with a par...
Design Optimization of a Novel Flush Boundary Layer Diverter Kucuk, Umut Can; Tuncer, İsmail Hakkı (2024-12-01) A novel boundary layer diverter is designed and optimized for increasing the performance of a typical semi-submerged inlet ingesting large amounts of boundary layer flow. A conceptual diverter configuration based on the pr...

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