Aviation最新文献_第5页

AN EMULATION ORIENTED METHOD AND TOOL FOR TEST OF GROUND TRAFFIC CONTROL SYSTEMS AT AIRPORTS 面向仿真的机场地面交通管制系统测试方法与工具

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Aviation Pub Date : 2022-06-10 DOI: 10.3846/aviation.2022.16869

Farid Saifutdinov, I. Jackson, J. Tolujevs

{"title":"AN EMULATION ORIENTED METHOD AND TOOL FOR TEST OF GROUND TRAFFIC CONTROL SYSTEMS AT AIRPORTS","authors":"Farid Saifutdinov, I. Jackson, J. Tolujevs","doi":"10.3846/aviation.2022.16869","DOIUrl":"https://doi.org/10.3846/aviation.2022.16869","url":null,"abstract":"The paper discusses the prospects for the development and implementation of centralized ground traffic control systems at airports. The automatic control system can only work if there is accurate data on the location of mobile objects, which include both vehicles involved in the maintenance of aircraft and the aircraft themselves. In order to develop and test software for any specific centralized control system, the emulation mode should be used, in which the simulation model of the airport transport network works in conjunction with the real control software. In this case, one of the main functions of the simulation model is the generation of data streams that appropriately reflect the processes of movement of objects in the transport network of a specific airport. The paper describes a universal simulation program that allows one to simulate precisely described scenarios for the process in a transport network, which necessitates decision-making at the level of a centralized control system. The movement of objects in the model is accompanied by the recording of their coordinates in the Digital Twin. In this way, real streams of measurement data from various systems for determining the position of moving objects are modeled and stored.","PeriodicalId":51910,"journal":{"name":"Aviation","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43350237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

LABYRINTH SEAL CFD CALCULATION AND TEMPERATURE MEASUREMENT INVESTIGATION 迷宫密封CFD计算及温度测量研究

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Aviation Pub Date : 2022-06-01 DOI: 10.3846/aviation.2022.16886

M. Čížek, V. Klír, P. Steinbauer, T. Vampola

引用次数: 0

MODELLING AN AIRCRAFT MAXIMUM ENDURANCE HORIZONTAL FLIGHT FOR AIR TRIALS 用于空中试验的飞机最大续航能力水平飞行模型

IF 1

Aviation Pub Date : 2022-05-30 DOI: 10.3846/aviation.2022.16920

A. Goncharenko

{"title":"MODELLING AN AIRCRAFT MAXIMUM ENDURANCE HORIZONTAL FLIGHT FOR AIR TRIALS","authors":"A. Goncharenko","doi":"10.3846/aviation.2022.16920","DOIUrl":"https://doi.org/10.3846/aviation.2022.16920","url":null,"abstract":"The paper considers theoretical preparation for the aircraft pre-air-trial. The construction of some mathematical models of a horizontal flight is based upon the material system of variable mass motion. Optimal speed of horizontal flight is obtained as a function of variable mass. This speed is a solution (extremal) of the objective functional of the flying apparatus horizontal flight endurance. The solution delivers maximal value to the objective functional. The main significant assumptions made at the problem setting are: the rate of the aircraft horizontal flight speed change is negligibly small, flying object engines thrust has the horizontal component only, the dependence between aerodynamic coefficients is simplified in approximation with a quadratic parabola; the data used in simulation are abstract, although plausible. It was shown that in spite of the speed changes during the studied flight, the rate of that change plays an unimportant role for the considered case; therefore, such supposition of the rate neglecting is properly grounded. The derived equations allow taking into account the rate when it is the matter of importance. Since the presented study is the simplified one, the obtained results could be considered as some reference values to be tested and possibly approached to.","PeriodicalId":51910,"journal":{"name":"Aviation","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46120240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

COMPARING FUEL-OPTIMAL AND SHORTEST PATHS WITH OBSTACLE AVOIDANCE 比较燃料最优和最短路径与避障

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Aviation Pub Date : 2022-05-30 DOI: 10.3846/aviation.2022.16878

Ibrahim H. Cihan

引用次数: 0

ANALYSIS OF THE IMPACT OF TASK DIFFICULTY ON THE OPERATORʾS WORKLOAD LEVEL 任务难度对操作员工作量水平的影响分析

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Aviation Pub Date : 2022-05-26 DOI: 10.3846/aviation.2022.16808

Marta Galant-Gołębiewska, Barbara Mika, Marta Maciejewska

{"title":"ANALYSIS OF THE IMPACT OF TASK DIFFICULTY ON THE OPERATORʾS WORKLOAD LEVEL","authors":"Marta Galant-Gołębiewska, Barbara Mika, Marta Maciejewska","doi":"10.3846/aviation.2022.16808","DOIUrl":"https://doi.org/10.3846/aviation.2022.16808","url":null,"abstract":"The widely held thesis is that the profession of pilot is one of the most difficult jobs to do. The task of the article was to analyse whether and how the difficulty of the performed task affects the pilot’s workload during the flight. The research was carried out using a flight simulator. During the simulator tests, the cognitive load measurements represented by the change in pilot pulse and concentration were used. A finger pulse oximeter was used for the first purpose. The second device was Mindwave Mobile which allows to measure level of pilot’s concentration and relaxation. The NASA-TLX questionnaire is used as a subjective method of operator’s workload assessment. The examined person assesses the level of his/her load, using six dimensions: mental demand, physical demand, temporal demand, performance, effort, and frustration level. Five research hypotheses were put forward and verified by the Friedman test. It has been shown that the level of difficulty of individual stages of the study is appropriately differentiated by pulse, concentration, relaxation, and subjective assessment of the respondents’ workload. It has been proved that pulse measurement, concentration, and relaxation levels, as well as subjective assessment of load levels, can be successfully used to assess the psychophysical condition of the operator.","PeriodicalId":51910,"journal":{"name":"Aviation","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44835091","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

INDICATED AIRSPEED ERROR DUE TO GRADUAL BLOCKING OF PITOT TUBE WITH DRAIN HOLE 显示空速误差是由于空速管逐渐堵塞而造成的

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Aviation Pub Date : 2022-04-05 DOI: 10.3846/aviation.2022.15963

Filip Sklenář, Jiří Matějů

引用次数: 0

DESIGNING AN EVOLUTIONARY OPTIMAL WASHOUT FILTER BASED ON GENETIC ALGORITHM 基于遗传算法的进化最优冲刷滤波器设计

IF 1

Aviation Pub Date : 2022-03-31 DOI: 10.3846/aviation.2022.16570

A. Gharib, M. Goharimanesh, A. Koochi, M. Gharib

{"title":"DESIGNING AN EVOLUTIONARY OPTIMAL WASHOUT FILTER BASED ON GENETIC ALGORITHM","authors":"A. Gharib, M. Goharimanesh, A. Koochi, M. Gharib","doi":"10.3846/aviation.2022.16570","DOIUrl":"https://doi.org/10.3846/aviation.2022.16570","url":null,"abstract":"This paper aims to design a reliable filter that can transform the actual motion of a flight simulator maneuver into a logical and understandable movement for its workspace. Motion cueing algorithms are used in scaling maneuvers to improve the user’s perception of real-world motion. As a unique algorithm, the washout-filter algorithm reduces the real motions where the user cannot understand the difference between the actual and simulated maneuvers. To design a proper washout filter, first, apply the inner ear model where humans can feel the motion to design a proper filter. The Otolith and semicircular systems were represented by two parts in this model. Second, an evolutionary theory based on a genetic algorithm is used to design a structure that minimizes human perception error and workspace boundaries. The issue is determining the coefficients in the model in order to create a high-performance flight simulator. The filtering algorithm, based upon the human vestibular model, compares human perception with flight simulator motion knowledge. The findings demonstrate an objective function that minimizes user perception error, and the flight simulator motion range can prepare a reliable washout filter for motion cueing.","PeriodicalId":51910,"journal":{"name":"Aviation","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48984204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

DESIGN CONCEPTION AND EVALUATION OF AN UNMANNED AMPHIBIOUS AERIAL VEHICLE USING SYSTEMATIC APPROACH 基于系统方法的无人两栖飞行器设计构想与评价

IF 1

Aviation Pub Date : 2022-03-30 DOI: 10.3846/aviation.2022.16519

S. Ganesan, B. Esakki, S. Mathiyazhagan, Vikram Pandimuthu

{"title":"DESIGN CONCEPTION AND EVALUATION OF AN UNMANNED AMPHIBIOUS AERIAL VEHICLE USING SYSTEMATIC APPROACH","authors":"S. Ganesan, B. Esakki, S. Mathiyazhagan, Vikram Pandimuthu","doi":"10.3846/aviation.2022.16519","DOIUrl":"https://doi.org/10.3846/aviation.2022.16519","url":null,"abstract":"This article’s incitement interprets Unmanned Amphibious Aerial Vehicle (UAAV)’s conceptual design process in a systematic approach. The UAAV is conceptualised to be an ideal tool for limnologists in water quality assessment. Integration of hovercraft with the multi-rotor system helps collect water samples from remote and inaccessible water bodies. The UAAV flies in multi-rotor mode, subsequently land and glide along the water surface in hovercraft mode. The new and unconventional vehicle configuration makes the conceptual stage a challenging one in the design process. To overcome the challenges and strapped configuration of vehicle design, the Authors used a systematic approach of scenario-based design, morphological matrix, and Pugh’s method in the design process of the “Pahl & Beitz” model to retrieve the best possible UAAV design. The conglomerate design of UAAV is evaluated for its design requirements, and the computational analysis is performed to examine the mechanical strength and flow characteristics of UAAV. The experimental prototype of UAAV demonstrates the competence of flying in the air and hovering in water through field trials.","PeriodicalId":51910,"journal":{"name":"Aviation","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48854032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

AIRFOIL SHAPE OPTIMIZATION USING BÉZIER CURVE AND GENETIC ALGORITHM 基于BÉZIER曲线和遗传算法的翼型优化

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Aviation Pub Date : 2022-03-25 DOI: 10.3846/aviation.2022.16471

Hatice Cansu Ayaz Ümütlü, Z. Kıral

引用次数: 3

MATHEMATICAL MODEL AND SIMULATION OF FREE BALLOON LIFTOFF IN THE PRESENCE OF SURFACE WINDS 表面风作用下自由气球升空的数学模型与仿真

IF 1

Aviation Pub Date : 2022-03-23 DOI: 10.3846/aviation.2022.16621

N. Daidzic

{"title":"MATHEMATICAL MODEL AND SIMULATION OF FREE BALLOON LIFTOFF IN THE PRESENCE OF SURFACE WINDS","authors":"N. Daidzic","doi":"10.3846/aviation.2022.16621","DOIUrl":"https://doi.org/10.3846/aviation.2022.16621","url":null,"abstract":"A mathematical model of free balloon launches in windy conditions is based on the conservation of the linear momentum in horizontal and vertical axes. Linear momentum conservation equations are represented by a set of four nonlinear first-order ODEs. Some ODEs were solved analytically, while the nonlinear Riccati ODE with variable coefficients for the vertical acceleration was solved using numerical ODE solvers. Transient aerodynamic lift and horizontal drag are caused by the slip flow over the balloon envelope. It takes free balloon ten half times to reach 90.9% of the wind velocity in a step function response. A launch condition was developed in terms of the minimum required envelope temperature for which the net aerostatic lift overcomes inert weight of a balloon. Perturbation analysis was used to explore changes in the net aerostatic lift. Simulations were performed to cases with and without envelope distortion and enhanced cooling due to forced convection. Since all balloon takeoffs are performed downwind, obstacle clearance becomes an issue due to rapid loss of aerodynamic lift. Balloons may stop climbing and even start descending shortly after liftoff despite intense heating representing real hazard.","PeriodicalId":51910,"journal":{"name":"Aviation","volume":" ","pages":""},"PeriodicalIF":1.0,"publicationDate":"2022-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42960888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0