Güncel Gönderiler: Havacılık ve Uzay Bilimleri Fakültesi
Toplam kayıt 110, listelenen: 41-60
-
The Importance of Organizational Behavior Model Applications in Air Transportation Industry
(Springer, 2022)Because the air transportation is a labor-intensive industry, human resource is one of the most crucial elements in order to survive and achieve the sustainable growth in the increasing competitive environment. As the ... -
Sustainability and Financial Performance: Examining the Airline Industry
(Springer, 2022)The air transport industry has numerous social, cultural and economic benefits. The sector plays a major role in the economic and social development of countries, cities and regions. The air transport industry enables ... -
Using the Stress Concentration Factor in Determining the Fracture Toughness
(Kauno Technologijos Universitetas, 2022)This paper offers the use of stress concentration factor in determining the critical fracture stress and fracture toughness of polymeric composite materials at various crack length ratios. The stress intensity factor has ... -
Characterizations of Microstructure and Properties of Dissimilar AISI 316L/9Ni Low-Alloy Cryogenic Steel Joints Fabricated by Gas Tungsten Arc Welding
(Springer, 2022)The demand for dissimilar joining of steel grades, namely austenitic stainless steels to low-alloy steels, may increase in near future owing to the fact that the storing of LNG is currently becoming a necessity, particularly ... -
Tree-shaped fractal metamaterial multiband absorber for C- and X-band applications
(Taylor and Francis Ltd., 2022)Recently, multiband metamaterial absorbers have gained considerable attention from research and development communities due to their applications in filtering, stealth, and sensing. However, these multiband absorbers are ... -
A comparison of four machine learning techniques and continuous wavelet transform approach for detection and classification of tool breakage during milling process
(Canadian Science Publishing, 2022)In machining, the tool condition has to be monitored by condition monitoring techniques to prevent damage by the use of tools and the workpiece. Cutting forces acting on the tool between zero and maximum values cause the ... -
The prediction of surface roughness and tool vibration by using metaheuristic-based ANFIS during dry turning of Al alloy (AA6013)
(Springer, 2022)In this article, the adaptive neuro-based fuzzy inference system (ANFIS) model is developed to estimate the surface roughness (Ra) and tool vibrations (Acc) of AA6013 aluminum alloy during dry turning. Turning experiments ... -
Low-Cost Antenna-Array-Based Metamaterials for Non-Invasive Early-Stage Breast Tumor Detection in the Human Body
(MDPI, 2022)Microstrip patch antennas have been used in many applications since their appearance. Despite their great promise, their narrow bandwidth and the loss at high-frequency bands have limited their usage in medical applications. ... -
Enhanced Sensing Capacity of Terahertz Triple-Band Metamaterials Absorber Based on Pythagorean Fractal Geometry
(MDPI, 2022)A new design of a triple band perfect metamaterial absorber based on Pythagorean fractal geometry is proposed and analyzed for terahertz sensing applications. The proposed design showed an enhanced sensing performance and ... -
The Theoretical Value for the Tip Radius of Cracks and Notches
(Kauno Technologijos Universitetas, 2022)In this paper, an additional equation that can be used in conjunction with the Stress Intensity Factor is produced, enabling the determination of all critical fracture stresses, including tensile strength, from only one ... -
Analysis of Factors Affecting the Sustainable Success of Airlines During the COVID-19 Pandemic
(SAGE Publications, 2022)The COVID-19 pandemic increased the risk of financial distress, bankruptcy, or both, in the airline industry. Whether airlines can survive or not during and/or after the pandemic is closely related to their decisions and ... -
MALE UAV selection in interval Type-2 fuzzy sets environment
(IOS Press BV, 2022)Unmanned Aerial Vehicles (UAVs) are increasingly used in the military field. Especially in recent years, UAVs have been a very effective instrument in gaining airspace superiority and military success. Many countries compete ... -
Simultaneous swept anhedral helicopter blade tip shape and control-system design
(Emerald Group Holdings Ltd., 2022)Purpose: This paper aims to offer a simultaneous design approach for helicopter having swept anhedral blade tip shape and helicopter flight control system (HFCS) to minimize controller cost. Design/methodology/approach: ... -
A study on microstructural and mechanical properties of gas tungsten arc welded thick cryogenic 9% Ni alloy steel butt joint
(Elsevier, 2022)Low alloy steel plates containing 9% Ni are generally preferred in the production of LNG storage tanks, due to their outstanding combination of properties such as excellent toughness, high ductility and crack re-sistance ... -
Investigation of wind effect on different quadrotors
(Emerald Group Holdings Ltd., 2022)Purpose – Although windy weather conditions have a significant effect on the flight safety and stability of any aircraft, the fact that quadrotors are lighter than other aircraft makes them more sensitive to the wind. ... -
A novel depreciation approach in an uncertain environment: interval type-2 fuzzy sets in the maritime industry
(Springer, 2022)This study aims to propose a novel model for the determination of depreciation in an environment of uncertainty. In the study, amortization methods were modified through interval type-2 fuzzy, and a new approach was proposed ... -
Electrically Driven VTOL Flying Car Designing and Aerodynamic Analysis
(Avrupa Bilim ve Teknoloji Dergisi, 2021)In this study, the design of the electric powered VTOL Flying car was made in the CAD program, and the longitudinal, vertical and lateral flight dynamics were examined and aerodynamic analysis was made. In the design, the ... -
Shape modification of Ahmed body to reduce drag coefficient and determination of turbulence model
(Niğde Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi, 2021)In this study, the aerodynamic analysis of Ahmed body which is generic automobile model is performed to determine convenient turbulence model and reduce drag coefficient by modifying shape of model. For this ... -
Rulman Hasarlarının Titreşim ve Gürültü Analizi ile Tespiti
(Avrupa Bilim ve Teknoloji Dergisi, 2021)Rulmanlar, yüksek hızlarda ağır yüklerin taşınmasını sağlayan, aynı zamanda çok düşük yuvarlanma kayıplarına sahip olan dönel makinaların vazgeçilmez parçası olarak endüstride yaygın olarak kullanılan makine parçalarıdır. ... -
Real-time tuning of PID controller based on optimization algorithms for a quadrotor
(Emerald Group Publishing Ltd., 2021)Purpose This study aims to develop a quadrotor with a robust control system against weight variations. A Proportional-Integral-Derivative (PID) controller based on Particle Swarm Optimization and Differential Evaluation ...
