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Responsibly regulating the civilian unmanned aerial vehicle deployment in India and Japan Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-04-09 Anjan Chamuah, Rajbeer Singh
Purpose The purpose of the paper is to describe the evolving regulatory structures of the civilian unmanned aerial vehicle (UAV) in India and Japan, not yet fully developed to regulate the deployment of the UAV. India and Japan are at the forefront to overhaul the respective regulatory framework to address issues of accountability, responsibility and risks associated with the deployment of UAV technologies
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Actuator model for spacecraft attitude control simulation Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-04-08 Chengxi Zhang, Jin Wu, Ran Sun, Mingjiang Wang, Dechao Ran
Purpose The purpose of this paper is to study the general actuator modeling in spacecraft attitude control systems. Design/methodology/approach The proposed module in this paper provides various non-ideal factors such as the second-order dynamic time response, time-delay, bias torques, dead-zones and saturation. The actuator module can make the simulation as close to the practical situation as possible
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Experimental and numerical prediction of lean blowout limits for micro gas turbine combustor Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-04-08 Kirubakaran V., David Bhatt
Purpose The lean blowout (LBO) limit of the combustor is one of the important performance parameters for any gas turbine combustor design. This study aims to predict the LBO limits of an in-house designed swirl stabilized 3kW can-type micro gas turbine combustor. Design/methodology/approach The experimental prediction of LBO limits was performed on 3kW swirl stabilized combustor fueled with methane
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Aircraft control with the use of model reference adaptive control Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-04-05 Grzegorz Henryk Kopecki
Purpose Indirect (fly-by-wire) control systems for general aviation aircraft and unmanned aircraft vehicles (UAV) control systems enable the decoupling of control surfaces. This method of aircraft control is different from classical approach. The purpose of the article is to show the aircraft can be controlled even if the control control surfaces are blocked. Design/methodology/approach The concept
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Sensitivity factors of aircraft mass for the conceptual design Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-22 Anatolii Kretov
Purpose The purpose of this work is to further develop the methodology for calculating the aircraft take-off mass and its main functional components for the conceptual analysis and synthesis of new projects. Design/methodology/approach The method is based on the assessment of changes in the take-off gross mass (TOGM) of the already developed project or already existing a basic version of the aircraft
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Results of simulation and scaled flight tests performed on a rocket-plane at high angles of attack Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-04-05 Agnieszka Kwiek, Cezary Galinski, Krzysztof Bogdański, Jaroslaw Hajduk, Andrzej Tarnowski
Purpose According to the study of the space flight market, there is a demand for space suborbital flights including commercial tourist flights. However, one of the challenges is to design a mission and a vehicle that could offer flights with relatively low G-loads. The project of the rocket-plane in a strake-wing configuration was undertaken to check if such a design could meet the FAA recommendation
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Numerical investigations on the hydrogen jet pressure variations in a strut based scramjet combustor Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-04-05 Jeyakumar Suppandipillai, Jayaraman Kandasamy, R. Sivakumar, Mehmet Karaca, Karthik K.
Purpose This paper aims to study the influences of hydrogen jet pressure on flow features of a strut-based injector in a scramjet combustor under-reacting cases are numerically investigated in this study. Design/methodology/approach The numerical analysis is carried out using Reynolds Averaged Navier Stokes (RANS) equations with the Shear Stress Transport k-ω turbulence model in contention to comprehend
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Constructive schemes to spacecraft attitude control with low communication frequency using sampled-data and encryption approaches Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-22 Chengxi Zhang, Jin Wu, Yulong Huang, Yu Jiang, Ming-zhe Dai, Mingjiang Wang
Purpose Recent spacecraft attitude control systems tend to use wireless communication for cost-saving and distributed mission purposes while encountering limited communication resources and data exposure issues. This paper aims to study the attitude control problem with low communication frequency under the sampled-data. Design/methodology/approach The authors propose constructive control system structures
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Flow separation control using a bio-inspired nose for NACA 4 and 6 series airfoils Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-25 Mohamed Arif Raj Mohamed, Rajesh Yadav, Ugur Guven
Purpose This paper aims to achieve an optimum flow separation control over the airfoil using a passive flow control method by introducing a bio-inspired nose near the leading edge of the National Advisory Committee for Aeronautics (NACA) 4 and 6 series airfoil. In addition, to find the optimised leading edge nose design for NACA 4 and 6 series airfoils for flow separation control. Design/methodology/approach
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Aerodynamic and static stability investigation into aircraft coupled system to suborbital space flights Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-02-25 Marcin Figat, Agnieszka Kwiek
Purpose The aim of the research is to conduct a study into a configuration of an aircraft system with a focus on aerodynamics. In addition, trim condition and static stability constraints were included. The main application of this system is suborbital space flights. The presented concept of a modular airplane system (MAS) consists of two vehicles: a Rocket Plane and a Carrier. Both are designed in
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A probabilistic-based analysis for wind distribution determination of a runway Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-02-08 Ahmet Esat Suzer, Aziz Kaba
Purpose The purpose of this study is to describe precisely the wind speed regime and characteristics of a runway of an International Airport, the north-western part of Turkey. Design methodology approach Three different probability distributions, namely, Inverse Gaussian (IG), widely used two-parameter Weibull and Rayleigh distributions in the literature, are used to represent wind regime and characteristics
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Free vibration and buckling analysis of FGM plates using inverse trigonometric shear deformation theory Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-22 Supen Kumar Sah, Anup Ghosh
Purpose The purpose of this paper is to carry out free vibration and buckling analysis of functionally graded material (FGM) plate. Design/methodology/approach Equilibrium and stability equations of FGM rectangular plate under different boundary conditions are derived using finite element method-based inverse trigonometric shear deformation theory (ITSDT). Eight-noded rectangular plate element with
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Multi-objective optimization model for airport gate assignment problem Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-08 Ramazan Kursat Cecen
Purpose The purpose of this paper is to provide feasible and fast solutions for the multi-objective airport gate assignment problem (AGAP) considering both passenger-oriented and airline-oriented objectives, which is the total walking distance from gate to baggage carousels (TWD) and the total aircraft fuel consumption during taxi operations (TFC). In addition, obtaining feasible and near-optimal solutions
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Modeling of fuel flow-rate of commercial aircraft for the descent flight using particle swarm optimization Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-01 Ridvan Oruc, Tolga Baklacioglu
Purpose The purpose of this paper is to create a new fuel flow rate model for the descent phase of the flight using particle swarm optimization (PSO). Design/methodology/approach A new fuel flow rate model was developed for the descent phase of the B737-800 aircraft, which is frequently used in commercial air transport using PSO method. For the analysis, the actual flight data records (FDRs) data containing
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Bird strike virtual testing for preliminary airframe design Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-02-25 Petros V. Perdikoulis, Ioannis K. Giannopoulos, Efstathios E. Theotokoglou
Purpose The purpose of this paper is to use numerical methods early in the airframe design process and access the structural performance of wing leading edge devices made of different materials and design details, under bird strike events. Design/methodology/approach Explicit finite element analysis was used to numerically model bird strike events. Findings Structural performance charts related to
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Learning from incidents in aircraft maintenance and continuing airworthiness: regulation, practice and gaps Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-10 James Clare, Kyriakos I. Kourousis
Purpose The ability to learn from previous events in support of preventing future similar events is a valuable attribute of aviation safety systems. A primary constituent of this mechanism is the reporting of incidents and its importance in support of developing learning material. Many regulatory requirements clearly define a structure for the use of learning material through organisational and procedural
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High-order derivative fusion estimation of rotorcraft angular rate Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-22 Changwu Liu, Haowen Wang, Chen Jiang
Purpose The paper aims at developing a novel algorithm to estimate high-order derivatives of rotorcraft angular rates to break the contradiction between bandwidth and filtering performance because high-order derivatives of angular rates are crucial to rotorcraft control. Traditional causal estimation algorithms such as digital differential filtering or various tracking differentiators cannot balance
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Determining the effect of air transportation on air pollution in the most polluted city in Turkey Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-22 Selçuk Gürçam, Emrah Konuralp, Selcuk Ekici
Purpose This study was carried out in Igdir, where Turkey’s urban air pollution is at the highest level, and the population is among the smallest. Thus, the study aims to determine the effect of air transportation on air pollution in the most polluted city in Turkey. Design/methodology/approach The approach includes six stages: choosing the airport, accessing the flight information for the airport
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Part 1: robust adaptive control of quadrotor with disturbance observer Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-29 Nigar Ahmed, Abid Raza, Rameez Khan
Purpose The aim of this paper is to design a nonlinear disturbance observer-based control (DOBC) method obtained by patching a control method developed using a robust adaptive technique and a DO. Design/methodology/approach For designing a DOBC, initially a class of nonlinear system is considered with an external disturbance. First, a DO is designed to estimate the external disturbances. This estimate
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Rotating flow thorough parallel plates with the various inclined magnetic field under the influence of hall current Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-22 Chandrasekar Pichaimuthu, Ganesh Swaminathan
Purpose The Purpose of this study to examine the magneto hydrodynamics (MHD) using the analytical and numerical tool. In recent years, MHD growing tremendously due to the presence of multidisciplinary application in solving the tedious problems in the viscous flow. Design/methodology/approach The flows between the parallel plates under the steady inclined magneto hydrodynamic force were studied under
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Comparative fatigue properties estimation of composite structural nodes Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-18 Miroslaw Rodzewicz
Purpose The purpose of this paper is to present the concept of the author’s method of fatigue properties assessment of polymer composite structures, especially structures having nodes of concentrated force introduction (NCFI) using fatigue test data of coupons of similar composites and the ratio of their structural stress rate factors. Design/methodology/approach Basing on fatigue properties of pure
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The use of FEA and semi-empirical equations for weight estimation of a passenger aircraft Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-22 Mariusz Kowalski, Zdobyslaw Jan Goraj, Bartłomiej Goliszek
Purpose The purpose of this paper is to present the result of calculations that were performed to estimate the structural weight of the passenger aircraft using novel technological solution. Mass penalty resulting from the installation of the fuselage boundary layer ingestion device was needed in the CENTRELINE project to be able to estimate the real benefits of the applied technology. Design/methodology/approach
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Prediction of burning performance and emissions indexes of a turboprop motor with artificial neural network Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-18 Kiyas Kayaalp, Sedat Metlek
Purpose The purpose of this paper is to estimate different air–fuel ratio motor shaft speed and fuel flow rates under the performance parameters depending on the indices of combustion efficiency and exhaust emission of the engine, a turboprop multilayer feed forward artificial neural network model. For this purpose, emissions data obtained experimentally from a T56-A-15 turboprop engine under various
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Weight minimization of fiber laminated composite beam for aircraft wing construction using exhaustive enumeration algorithm and numerical modeling Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-18 Rohit R. Ghadge, Prakash S.
Purpose This paper aims to focus on calculating the number of layers of composite laminates required to take the applied load made up of graphite/epoxy (AS4/3501-6) which can be used in many industrial applications. Optimization for minimization of weight by variation in the mechanical properties is possible by using different combinations of fiber angle, number of plies and their stacking sequence
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Unmanned aircraft automatic flight control algorithm in an Immelmann manoeuvre Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-08 Tomasz Rogalski, Paweł Rzucidło, Stanisław Noga, Jacek Prusik
Purpose The purpose of this paper is to present the idea of automatic flight control algorithms capable of performing an Immelmann turn manoeuvre automatically. This is a case of a manoeuvre far removed from so-called standard flight. The character of this manoeuvre and the range of changes in the aircraft flight parameters restrict the application of standard control algorithms. Furthermore, the possibility
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Vibration analysis of an aviation engine turbine shaft shield Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-03-05 Stanisław Noga, Kaja Maciejowska, Tomasz Rogalski
Purpose This paper aims to deal with the problem of vibration in an aircraft engine turbine shaft shield. The physical model of the system under study is inspired by the PZL-10W aviation jet engine shaft shield and is a structure of the profile circular arc. The main goal of the presented research is to develop a modal model of the discussed object. Another task is to determine the impact of the shaft
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Multi-objective TMA management optimization using the point merge system Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-15 Ramazan Kursat Cecen
Purpose The purpose of this study is to provide conflict-free operations in terminal manoeuvre areas (TMA) using the point merge system (PMS), airspeed reduction (ASR) and ground holding (GH) techniques. The objective is to minimize both total aircraft delay (TD) and the total number of the conflict resolution manoeuvres (CRM). Design/methodology/approach The mixed integer linear programming (MILP)
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Early detection of SARS-CoV-2 without human intervention to combat COVID-19 using drone technology Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-09 Sekar Manigandan, Praveen Kumar Thaloor Ramesh, Nguyen Thuy Lan Chi, Kathirvel Brindhadevi
Purpose The focus of the current study to combat the ongoing pandemic by preventing the transmission using the Unmanned aerial vehicle system. The transmission of the COVID-19 pandemic can be avoided only by finding the infectious person at the right time. Despite the thermal scanning camera and artificial intelligence technology, finding the infectious individual at many occasions has become questionable
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Communication scheduling data generation for pre-configured IMA network Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-10 Zhen Zhao, Zhiyong Fan, Yigang Sun, Zhexu Liu
Purpose In modern integrated modular avionics (IMA), it plays an important role to guarantee safety and reliability of the system. The safety and reliability of communication scheduling plays a crucial role in this IMA platforms-based network system. To verify the safety and reliability of the communication scheduling in this network, sufficient and typical test data must be generated to input into
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Composite nonlinear H∞ based output feedback controller for an un-crewed helicopter in its hover flight Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-11 Femi Thomas, Mija Salomi Johnson
Purpose This paper aims to propose output feedback-based control algorithms for the flight control system of a scaled, un-crewed helicopter in its hover flight mode. Design/methodology/approach The proposed control schemes are based on H∞ control and composite nonlinear control. The gains of the output feedback controllers are obtained as the solution of a set of linear matrix inequalities (LMIs).
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Synthesis analysis for multi-UAVs formation anomaly detection Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-08 Wang Jianhong, Wang Yanxiang
Purpose The purpose of this paper is to deal with the anomaly detection problem in multi-unmanned aerial vehicles (UAVs) formation that can be transformed to identify some unknown parameters; a more general nonlinear dynamical model for each UAV is considered to include two terms. Due to an unknown parameter corresponding to the normal or abnormal state for each UAV, the bias-compensated approach is
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Combination of experiments and CFD analysis for in-flight wings deflections estimation Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-21 Hamid Reza Ovesy, Ali Gharibi, Reza Khaki
Purpose This study aims to develop a new correlation method for prediction of in-flight wings deflections by integration of the experimental ground tests with computational fluid dynamics (CFD) analysis. Design/methodology/approach The ground test results are implemented in the curve fitting process to determine deflections at 66 specific points (SPs) on the front and rear wing torque box. By using
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Microwave absorption performance of hexagonal nano boron nitride doped basalt fabric-reinforced epoxy composites Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-08 Fatma Bakal, Ahmet Yapici, Muharrem Karaaslan, Oğuzhan Akgöl
Purpose The purpose of this paper is to investigate the effect of doping element on the microwave absorption performance of hexagonal nano boron nitride (h-nBN)-reinforced basalt fabric (BF)/epoxy composites. A new type of hybrid composite that will be produced by the use of boron nitride as an additive that leads to increased radar absorption capability will be developed and a new material that can
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The impacts of lean principles on the production of civil aircraft in Boeing Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-08 Nana Emmanuel Samuel Agyeman
Purpose The purpose of this paper is to review how lean through the Boeing Production System impacted the production of civil aircraft in Boeing. Design/methodology/approach The paper engages the usage of literature on lean from researchers, book authors and the Boeing Company. These literatures were studied to ascertain why Boeing pursued the lean journey and the transformations it attained. Findings
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The adaptive sliding mode control using improved genetic algorithm tuning PID controller for the planetary rover Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-18 Tiger Yuan, Guanyou Guo, Baiyu Du, Zhiping Zhao, Weikai Xu
Purpose The purpose of this paper is to resolve the problem of the dynamic response performance of the driving control system for a six-wheeled planetary rover. An adaptive sliding mode controller based on an improved genetic algorithm (IGA) to tune PID sliding surface parameters was used in the driving control system of the planetary rover. Design/methodology/approach First, the mathematical model
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An experimental parametric study on planar sheared wings tip devices for low-to-moderate aspect ratio wings Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-04 Lourelay Moreira dos Santos, Guilherme Ferreira Gomes, Rogerio F. Coimbra
Purpose The purpose of this study is to investigate the aerodynamic characteristics of a low-to-moderate-aspect-ratio, tapered, untwisted, unswept wing, equipped of sheared wing tips. Design/methodology/approach In this work, wind tunnel tests were made to study the influence in aerodynamic characteristics over a typical low-to-moderate-aspect-ratio wing of a general aviation aircraft, equipped with
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Research on influencing factors of fuel tank flammability exposure time for transport aircraft Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-02-10 Zhang Ruihua, Weihua Liu, Wenyi Liu
Purpose The assessment of fuel tank flammability exposure time for transport aircraft is one of the indispensable links in the airworthiness certification process. According to published literature, many factors can affect the flammability exposure time, while systematic analysis and calculations addressing these factors are in shortage. Design/methodology/approach Based on the requirements for airworthiness
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Experimental and numerical simulation of the piston engine fueled with alternative fuel blends: CFD approach Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-02-08 Pradeep Uttam Gaikwad, Senthil Gnanamani, Nithya Subramani
Purpose The purpose of this paper is to find the pressure and the knocking phenomena. To get the pressure values, the butterworth bandpass filter was used and the potential of knocking was found by using peak-to-peak pressure values and also the species concentration. Cooled exhaust gas recirculation was the method used to minimize the knocking occurrence in the engine. Moreover, the effect of premixed
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Environmental impact of pollutants from commercial aircrafts at Hasan Polatkan airport Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-02-04 Vehbi Emrah Atasoy, Ahmet Esat Suzer, Selcuk Ekici
Purpose This paper aims to investigate the environmental impact of various pollutant emissions including carbon monoxide (CO), carbon dioxide (CO2), nitrogen oxide (NOx) and hydrocarbon (HC) from aircraft exhaust gases during the landing and take-off (LTO) cycles at Eskisehir Hasan Polatkan Airport, Turkey, between 2017 and 2018. Design/methodology/approach The methodology approach used to calculate
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Comparative study by DTM for unsteady viscous flow between the jet engines combustion unit subjected to inclined magnetic field Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-02-02 V.W.J. Anand, S. Ganesh, Seripah Awang Kechil
Purpose The purpose of this study to analyze the unsteady magneto hydrodynamic incompressible viscous fluid flow along the porous parallel plates in which constant periodic suction/injection takes place at lower and upper plate, respectively. By the proper choice of stream function, they obtained exact solution analytically. Velocity components are obtained from exact solution. Design/methodology/approach
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Hydrogen as the futuristic fuel for the aviation and aerospace industry – review Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-30 P. Gunasekar, S. Manigandan, Praveen Kumar T.R.
Purpose The rise in demand and high utilization of fuel causes severe environmental threat for the nations on the globe. Rapid burning potential of hydrogen produces enormous amount of thrust, and it is mainly owing to wide flame range and less onset of ignition. Design/methodology/approach The significant contribution of hydrogen as fuel has been explored by several researchers around the globe recently
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Unfalsified control design using a generalized cost function for a quadrotor Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2021-01-18 Azam Hokmabadi, Mahdi Khodabandeh
Purpose The purpose of this paper is to design a controller for a quadrotor only by using input–output data without a need for the system model. Design/methodology/approach Tracking control for the quadrotor is considered by using unfalsified control, which is one of the most recent strategies of robust adaptive control. The main assumption in unfalsified control design is that there is no access to
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Emissions prediction of an aero-piston gasoline engine during surveillance flight of an unmanned aerial vehicle Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-23 Ali Dinc, Murat Otkur
Purpose The purpose of this study is to perform the preliminary design, flight performance and exhaust emissions calculations of a piston engine powered unmanned aerial vehicle (UAV) during a flight cycle which consists of multiple flight altitudes and airspeeds. Design/methodology/approach A genuine computer model in Matlab/Simulink was developed to predict the size and weight of UAV and piston engine
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Turbojet direct-thrust control scheme for full-envelope fuel consumption minimization Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-15 Francisco Villarreal-Valderrama, Carlos Santana Delgado, Patricia Del Carmen Zambrano-Robledo, Luis Amezquita-Brooks
Purpose Reducing fuel consumption of unmanned aerial vehicles (UAVs) during transient operation is a cornerstone to achieve environment-friendly operations. The purpose of this paper is to develop a control scheme that improves the fuel economy of a turbojet in its full operating envelope. Design/methodology/approach A novel direct-thrust linear quadratic integral (LQI) approach, comprised by an optimal
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Prediction and simulation of aircraft noise in the international Eskisehir Hasan Polatkan airport (LTBY) Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-04 Halil Yalcin Akdeniz, Mehmet Ziya Sogut, Onder Turan
Purpose In recent years, in parallel with the increasing air traffic and the number of passengers in air transport, the number of people exposed to aircraft-induced noise has increased significantly. Especially people living in the areas close to the airports are affected by noise emission during the landing, take-off, taxi and ground operations. Negative effects of noise such as sleep disturbance
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Evaluation of the potential of commercial use of microalgae in the world and in Ukraine Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-01 Lesia Pavliukh, Sergii Shamanskyi, Sergii Boichenko, Artur Jaworski
Purpose This paper aims to evaluate of the microalgae potential for commercial application, in particular to conduct experimental study of biogenic compounds removal from sewage waters by microalgae, and to calculate economical benefits from biofertizers and biofuel production. Design/methodology/approach Experimental study in the concentration change of nitrogen and phosphorus compounds in the cultivation
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Propeller locations study of a generic delta wing UAV model Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-12-02 Khushairi Amri Kasim, Shabudin Mat, Iskandar Shah Ishak, Shuhaimi Mansor
Purpose This study aims to investigate the effects of propeller locations on the aerodynamic characteristics of a generic 55° swept angle sharp-edged delta wing unmanned aerial vehicle (UAV) model. Design/methodology/approach A generic delta-winged UAV model has been designed and fabricated to investigate the aerodynamic properties of the model when the propeller is placed at three different locations
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Study of unsteady separated fluid flows using a multi-block lattice Boltzmann method Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-11-26 Eslam Ezzatneshan
Purpose Numerical simulations are performed for studying the vorticity dynamics of a dipole colliding with the wall in a bounded flow and the wake structure and separated flow properties past a circular cylinder at the values of Reynolds numbers. Design/methodology/approach The near wake statistics of separated fluid flows are investigated by using the lattice Boltzmann method (LBM) in a two-dimensional
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The influence of the shoulder depth on the properties of the thin sheet joint made by FSW technology Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-11-20 Rafał Burek, Dawid Wydrzyński, Andrzej Kubit, Waldemar Łogin
Purpose This paper aims to experimentally determine the influence of the tool shoulder depth value on the structural and strength properties of the single lap joints made of 7075-T6 aluminium alloy made with friction stir welding (FSW) technology. The aim of the preliminary tests is to optimize the parameters of joining process of thin-walled structures such as the skin-stringer joint or skin-frame
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Influence of high oxygenated biofuels on micro-gas turbine engine for reduced emission Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-11-11 Booma Devi, Venkatesh S., Rakesh Vimal, Praveenkumar T.R.
Purpose This paper aims to investigate the effect of additives in Jet-A fuel blends, especially on performance, combustion and emission characteristics. Design/methodology/approach Jet-A fuel was formed by using Kay’s and Gruenberg–Nissan mixing rules by adding additive glycerol with TiO2. While measuring the combustion performance, the amount of oxygen content present in fuel and atomization are the
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Study of three types of wave leading edge on the performance of industrial turbine blade cascade Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-11-11 Hamed Ghandi, Reza Aghaei Togh, Abolghasem Mesgarpoor Tousi
Purpose The blade profile and its geometrical features play an important role in the separation of the boundary layer on the blade. Modifying the blade geometry, which might lead to the delay or elimination of the flow separation, can be considered as a passive flow control methodology. This study aims to find a novel and inexpensive way to reduce loss with appropriate modifications on the leading
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Robust error-based active disturbance rejection control of a quadrotor Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-11-04 Taki Eddine Lechekhab, Stojadin Manojlovic, Momir Stankovic, Rafal Madonski, Slobodan Simic
Purpose The control of a quadrotor unmanned aerial vehicle (UAV) is a challenging problem because of its highly nonlinear dynamics, under-actuated nature and strong cross-couplings. To solve this problem, this paper aims to propose a robust control strategy, based on a concept of active disturbance rejection control (ADRC). Design/methodology/approach The altitude/attitude dynamics of a quadrotor is
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Optimization of combustion and performance parameters by intake-charge conditions in a small-scale air-cooled hydrogen fuelled SI engine suitable for use in piston-prop aircraft Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-10-30 Habib Gürbüz
Purpose Spark ignition (SI) engines are used in a wide area in the transportation industry, from road vehicles to piston-prop aircraft. On the other hand, the decrease in reserves of fossil fuels used in SI engines and the increase in greenhouse gas emissions makes the use of alternative fuels inevitable. In this paper, optimization of in-cylinder combustion and engine performance parameters by intake-charge
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Lowest emission sustainable aviation biofuels as the potential replacement for the Jet-A fuels Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-10-23 Anderson A., Karthikeyan A., Ramesh Kumar C., Ramachandran S., Praveenkumar T.R.
Purpose The purpose of this study is to predict the performance and emission characteristics of micro gas turbine engines powered by alternate fuels. The micro gas turbine engine performance, combustion and emission characteristics are analyzed for the jet fuel with different additives. Design/methodology/approach The experimental investigation was carried out with Jet A-1 fuel on the gas turbine engines
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Numerical prediction of vortex trajectories and vortex–blade interaction on the CROR engine Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-09-15 Nuno Vinha, David Vallespin, Eusebio Valero, Valentin de Pablo, Santiago Cuesta-Lopez
Purpose The exponential growth in computational capabilities and the increasing reliability of current simulation tools have fostered the use of computational fluid dynamics (CFD) in the design of pioneering aircraft engine architectures, such as the counter rotating open rotor (CROR) engine. Today, this design process is led by tight performance and noise constraints from a very early stage, thus
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Inlet air and fuel flow pressure fluctuation effect on supersonic combustion Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-10-30 AmirMahdi Tahsini
Purpose The purpose of this paper is to analyze the effect of pressure fluctuations on the combustion efficiency of the hydrogen fuel injected into the supersonic oxidizing cross flow. The pressure fluctuations are imposed on inlet air flow and also on the fuel flow stream. Two different situations are considered: the combustion chamber once without and again with the inlet standing oblique shock wave
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Aerodynamic performance enhancement of an Airfoil using trapezoidal vortex generators Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-10-23 Rawad Himo, Charbel Bou-Mosleh, Charbel Habchi
Purpose Flow separation on wings, blades and vehicles can be delayed or even suppressed by the use of vortex generators (VG). Numerous studies, documented in the literature, extensively describe the performance of triangular and rectangular VG winglets. This paper aims to focus on the use of non-conventional VG shapes, more specifically an array of trapezoildal-perforated VG tabs. Design/methodology/approach
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Energy and exergy prices of the jet kerosene fuel with carbon emission equivalents for the air transport sector in Turkey Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-10-20 Ibrahim Yildiz, Hakan Caliskan
Purpose The purpose of this study is to evaluate the energy and exergy prices and carbon emission equivalents of the jet kerosene (Jet A-1) fuel considering 12 months data for the air transport sector in Turkey. Design/methodology/approach In the selection of the energy resources, one of the most important factors besides the need is the price of the energy resources. To use and save the energy resources
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Adaptive fuzzy Jacobian control of spacecraft combined attitude and Sun tracking system Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-10-15 Yew-Chung Chak, Renuganth Varatharajoo, Nima Assadian
Purpose The paper aims to address the combined attitude control and Sun tracking problem in a flexible spacecraft in the presence of external and internal disturbances. The attitude stabilization of a flexible satellite is generally a challenging control problem, because of the facts that satellite kinematic and dynamic equations are inherently nonlinear, the rigid–flexible coupling dynamical effect
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In-space structural assembly using predefined performance based method Aircr. Eng. Aerosp. Technol. (IF 0.785) Pub Date : 2020-10-15 Xianliang Zhang, Weibing Zhu, Xiande Wu, Ting Song, Yaen Xie, Han Zhao
Purpose The purpose of this paper is to propose a pre-defined performance robust control method for pre-assembly configuration establishment of in-space assembly missions, and collision avoidance is considered during the configuration establishment process. Design/methodology/approach First, six-degrees-of-freedom error kinematic and dynamic models of relative translational and rotational motion between