首页 > 最新文献

VESTNIK of Samara University. Aerospace and Mechanical Engineering最新文献

英文 中文
Designing an active electronically scanned array as part of onboard equipment of a high-speed radio communication channel 设计有源电子扫描阵列,作为高速无线电通信信道机载设备的一部分
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-59-70
E. R. Zhdanov, A. O. Slavyanskiy, O. S. Kharina, A. V. Shpack
The active electronically scanned array being developed is designed to provide an all-weather high-speed radio communication channel “Spacecraft – Earth”. It is supposed to provide fast, inertia-free observation of space by swinging the antenna beam electrically, and, in fact, is a dynamic space-time filter of the spacecraft. The aim of the work is to identify the basic principles of functioning of the array as part of the spacecraft with inherent limitations in the mass-dimensional and energy characteristics of the onboard equipment and, at the same time, high requirements for the functional characteristics. This paper presents the calculation and the main results of designing an active electronically scanned array complying with the requirements for optimizing the parameters of the antenna system. To assess the effect of scanning on the phase characteristics of the chips, a nonlinear amplifier model was developed. A statistical analysis of the phase characteristics was carried out when the load resistance changed in accordance with the obtained distribution laws. When calculating the resulting directional pattern of the antenna array, destabilizing factors were taken into account in accordance with the results of the study of the prototypes of the antenna array being created. Phase errors were calculated, mainly determined by the errors of the terminal parts of the receiving paths. Measures were implemented to ensure the effect of such phase errors on the directional pattern of the array only on the far side lobes.
正在开发的有源电子扫描阵列旨在提供 "航天器-地球 "全天候高速无线电通信信道。它通过电子方式摆动天线波束,提供快速、无惯性的空间观测,实际上是航天器的动态时空滤波器。这项工作的目的是确定作为航天器一部分的阵列的基本工作原理,该阵列在机载设备的质量尺寸和能量特性方面有固有的限制,同时对功能特性有很高的要求。本文介绍了按照优化天线系统参数的要求设计有源电子扫描阵列的计算和主要结果。为了评估扫描对芯片相位特性的影响,开发了一个非线性放大器模型。当负载电阻根据所获得的分布规律发生变化时,对相位特性进行了统计分析。在计算天线阵列的定向模式时,根据对正在制作的天线阵列原型的研究结果,考虑了不稳定因素。计算出的相位误差主要由接收路径终端部分的误差决定。为确保这种相位误差对阵列方向图的影响只限于远侧叶,采取了一些措施。
{"title":"Designing an active electronically scanned array as part of onboard equipment of a high-speed radio communication channel","authors":"E. R. Zhdanov, A. O. Slavyanskiy, O. S. Kharina, A. V. Shpack","doi":"10.18287/2541-7533-2023-22-4-59-70","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-59-70","url":null,"abstract":"The active electronically scanned array being developed is designed to provide an all-weather high-speed radio communication channel “Spacecraft – Earth”. It is supposed to provide fast, inertia-free observation of space by swinging the antenna beam electrically, and, in fact, is a dynamic space-time filter of the spacecraft. The aim of the work is to identify the basic principles of functioning of the array as part of the spacecraft with inherent limitations in the mass-dimensional and energy characteristics of the onboard equipment and, at the same time, high requirements for the functional characteristics. This paper presents the calculation and the main results of designing an active electronically scanned array complying with the requirements for optimizing the parameters of the antenna system. To assess the effect of scanning on the phase characteristics of the chips, a nonlinear amplifier model was developed. A statistical analysis of the phase characteristics was carried out when the load resistance changed in accordance with the obtained distribution laws. When calculating the resulting directional pattern of the antenna array, destabilizing factors were taken into account in accordance with the results of the study of the prototypes of the antenna array being created. Phase errors were calculated, mainly determined by the errors of the terminal parts of the receiving paths. Measures were implemented to ensure the effect of such phase errors on the directional pattern of the array only on the far side lobes.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"7 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139149994","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
Methodology of delivering space parts, tools and accessories to a near Earth orbital station on the basis of the reliability factor 根据可靠性系数向近地轨道站运送空间部件、工具和配件的方法
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-71-77
I. V. Zheleznov, R. A. Uperchuk, V. K. Eroshenko
The main aspects of the deployment of multi-module orbital manned stations are considered. The methodology for planning the delivery of spare parts, tools and accessories used in planning of transport operations to the International Space Station, is analyzed. It is shown that its application is related to the problem of mathematical programming with a large number of variables, which complicates the process of finding the optimal planning option in terms of economic efficiency. Transport operations to national manned orbital stations are carried out less frequently as compared to the International Space Station due to the enormous costs of spacecraft launches taking into account possible emergency situations. An approach to improving the methodology for planning the delivery of spare parts, tools and accessories for possible use on national manned orbital stations is proposed. It consists in taking into account the reliability of on-board equipment. The advantage of the improved methodology is simplification of planning transport operations without the use of mathematical programming. In addition, the improved methodology is clear, simple and can be implemented step by step.
考虑了多模块轨道载人空间站部署的主要方面。分析了向国际空间站运送备件、工具和附件的规划方法。结果表明,该方法的应用与变量数量众多的数学编程问题有关,这使得从经济效益角度寻找最佳规划方案的过程变得更加复杂。与国际空间站相比,国家载人轨道站的运输业务开展得较少,原因是考虑到可能出现的紧急情况,航天器发射成本巨大。建议采用一种方法来改进备件、工具和配件的运送规划方法,以便可能用于国家载人轨道站。它包括考虑机载设备的可靠性。改进方法的优点是简化了运输业务规划,无需使用数学编程。此外,改进后的方法清晰、简单,可以逐步实施。
{"title":"Methodology of delivering space parts, tools and accessories to a near Earth orbital station on the basis of the reliability factor","authors":"I. V. Zheleznov, R. A. Uperchuk, V. K. Eroshenko","doi":"10.18287/2541-7533-2023-22-4-71-77","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-71-77","url":null,"abstract":"The main aspects of the deployment of multi-module orbital manned stations are considered. The methodology for planning the delivery of spare parts, tools and accessories used in planning of transport operations to the International Space Station, is analyzed. It is shown that its application is related to the problem of mathematical programming with a large number of variables, which complicates the process of finding the optimal planning option in terms of economic efficiency. Transport operations to national manned orbital stations are carried out less frequently as compared to the International Space Station due to the enormous costs of spacecraft launches taking into account possible emergency situations. An approach to improving the methodology for planning the delivery of spare parts, tools and accessories for possible use on national manned orbital stations is proposed. It consists in taking into account the reliability of on-board equipment. The advantage of the improved methodology is simplification of planning transport operations without the use of mathematical programming. In addition, the improved methodology is clear, simple and can be implemented step by step.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"27 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139150050","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
Algoritms for determining the attitude position of an unmanned aerial vehicle relative to the landing platform by using computer vision 利用计算机视觉确定无人飞行器相对于着陆平台的姿态位置的算法
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-37-51
T. Gainutdinova, S. V. Novikova, V. G. Gainutdinov, M. Trusfus, V. M. Litvin
Algorithms for determining the attitude position of an aircraft or helicopter-type unmanned aerial vehicle relative to the landing platform with special optical marks are considered. An assessment is made of the possibility of calculating the angular position, height and distance to the landing platform in real time based on image processing by a separate on-board processor combined with a digital optical camera into a single measuring unit. The results of calculating the aircraft attitude relative to the landing platform moving along a program trajectory using computer vision algorithms are presented. Simulation of the process of recognizing optical marks on a moving platform from a moving aircraft confirmed that using a processor with a program for recognizing and identifying optical marks by using computer vision and algorithms for calculating the position of the aircraft relative to landing platforms can assuredly provide reliable information about the positioning of an unmanned aerial vehicle relative to the landing platform in real time and can be used in conjunction with other navigation aids (or independently) to ensure accurate landing of unmanned aircraft.
考虑了利用特殊光学标记确定飞机或直升机型无人驾驶飞行器相对于着陆平台的姿态位置的算法。评估了通过一个独立的机载处理器结合一个数字光学摄像机,将图像处理与单一测量单元相结合,实时计算与着陆平台的角度位置、高度和距离的可能性。介绍了利用计算机视觉算法计算飞机相对于沿程序轨迹移动的着陆平台的姿态的结果。对从移动的飞机上识别移动平台上的光学标记的过程进行的模拟证实,使用带有计算机视觉识别和辨认光学标记程序的处理器和计算飞机相对于着陆平台位置的算法,一定能实时提供关于无人驾驶飞行器相对于着陆平台定位的可靠信息,并可与其他导航辅助设备结合使用(或单独使用),以确保无人驾驶飞机准确着陆。
{"title":"Algoritms for determining the attitude position of an unmanned aerial vehicle relative to the landing platform by using computer vision","authors":"T. Gainutdinova, S. V. Novikova, V. G. Gainutdinov, M. Trusfus, V. M. Litvin","doi":"10.18287/2541-7533-2023-22-4-37-51","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-37-51","url":null,"abstract":"Algorithms for determining the attitude position of an aircraft or helicopter-type unmanned aerial vehicle relative to the landing platform with special optical marks are considered. An assessment is made of the possibility of calculating the angular position, height and distance to the landing platform in real time based on image processing by a separate on-board processor combined with a digital optical camera into a single measuring unit. The results of calculating the aircraft attitude relative to the landing platform moving along a program trajectory using computer vision algorithms are presented. Simulation of the process of recognizing optical marks on a moving platform from a moving aircraft confirmed that using a processor with a program for recognizing and identifying optical marks by using computer vision and algorithms for calculating the position of the aircraft relative to landing platforms can assuredly provide reliable information about the positioning of an unmanned aerial vehicle relative to the landing platform in real time and can be used in conjunction with other navigation aids (or independently) to ensure accurate landing of unmanned aircraft.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"27 3‐4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139149369","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
Method of automated arrangement of devices in a spacecraft compartment taking into account connection to interface connectors of feed-through plates of an on-board cable system 考虑到与机载电缆系统直通板接口连接器的连接而自动布置航天器舱室中设备的方法
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-7-24
A. A. Belyakov, V. I. Prihodko, A. Shulepov
The article proposes a method for automated arrangement of on-board equipment in the spacecraft compartment, connected to external devices through sealed adapters by the on-board cable system routes. The purpose is to create a program that allows automated placing of a part of the on-board equipment in the compartment, taking into account the existing practical principles for developing instrument placement schemes, one of which is to minimize the mass of the on-board cable system. The mathematical model is described using the matrix-topological layout method in a procedural form, as well as in a numerical form for calculating the coordinates of the placement of devices and estimating the number of cycles to find the final solution. Recommendations are provided to ensure that the full range of technical requirements is taken into account in the future. An outline flowchart of the method algorithm is presented with support in the high-level Python programming language. The software implementation of the method was carried out with emulators. Testing was carried drawing on the example of a compartment of one of the advanced space vehicles. The effectiveness of the method is evaluated by comparing the number of cycles needed to obtain the result and the total time spent on the layout relative to the control data known from the job statistics.
文章提出了一种在航天器舱内自动布置机载设备的方法,这些设备通过密封适配器通过机载电缆系统线路与外部设备连接。其目的是创建一个程序,在考虑到制定仪器放置方案的现有实用原则(其中之一是最大限度地减少机载电缆系统的质量)的情况下,将部分机载设备自动放置在舱内。数学模型采用矩阵-拓扑布局方法,以程序形式和数值形式进行描述,用于计算设备放置坐标和估算找到最终解决方案的周期数。此外,还提出了一些建议,以确保今后能考虑到各种技术要求。在高级 Python 编程语言的支持下,介绍了该方法算法的概要流程图。使用仿真器对该方法进行了软件实施。测试以先进航天器的一个舱室为例进行。通过比较获得结果所需的周期数和布局所花费的总时间与作业统计中已知的控制数据,对该方法的有效性进行了评估。
{"title":"Method of automated arrangement of devices in a spacecraft compartment taking into account connection to interface connectors of feed-through plates of an on-board cable system","authors":"A. A. Belyakov, V. I. Prihodko, A. Shulepov","doi":"10.18287/2541-7533-2023-22-4-7-24","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-7-24","url":null,"abstract":"The article proposes a method for automated arrangement of on-board equipment in the spacecraft compartment, connected to external devices through sealed adapters by the on-board cable system routes. The purpose is to create a program that allows automated placing of a part of the on-board equipment in the compartment, taking into account the existing practical principles for developing instrument placement schemes, one of which is to minimize the mass of the on-board cable system. The mathematical model is described using the matrix-topological layout method in a procedural form, as well as in a numerical form for calculating the coordinates of the placement of devices and estimating the number of cycles to find the final solution. Recommendations are provided to ensure that the full range of technical requirements is taken into account in the future. An outline flowchart of the method algorithm is presented with support in the high-level Python programming language. The software implementation of the method was carried out with emulators. Testing was carried drawing on the example of a compartment of one of the advanced space vehicles. The effectiveness of the method is evaluated by comparing the number of cycles needed to obtain the result and the total time spent on the layout relative to the control data known from the job statistics.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"54 51","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139151126","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
Power plants of the first aircraft 第一架飞机的动力装置
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-158-169
A. S. Drygin
The article is dedicated to the 140th anniversary of the construction of the first Russian aircraft designed by Alexander Fedorovich Mozhaisky. The main attention is paid to a comparative assessment of the parameters of the power plants of the Mozhaisky aircraft and some of the best known of the first heavier-than-air manned aircraft driven by a propeller. For the analysis, data published in various sources were used, primarily on the parameters of the elements of power plants (engines and propellers). An assessment was made of the sufficiency of the engine power of the first aircraft needed for their flight. The published materials of detailed studies of the aerodynamics of aircraft by A.F.Mozhaisky and the Wright brothers were used as the basis for an expert qualitative assessment of the aerodynamic characteristics of the compared aircraft. An analysis of the known statistical data and the results of the calculated estimates made it possible to show the impact of engine improvement on the progress in aviation.
这篇文章是为了纪念亚历山大-费多洛维奇-莫扎伊斯基设计的第一架俄罗斯飞机制造 140 周年。文章的主要内容是对莫扎伊斯基飞机的动力装置参数和螺旋桨驱动的第一架重于空气的有人驾驶飞机的一些最著名的参数进行比较评估。分析中使用了各种来源公布的数据,主要是动力装置(发动机和螺旋桨)元件的参数。对首批飞机飞行所需的发动机功率是否充足进行了评估。A.F.Mozhaisky 和莱特兄弟对飞机空气动力学进行详细研究的公开资料被用作对比较飞机的空气动力学特性进行专家定性评估的基础。通过对已知统计数据和计算估算结果的分析,可以看出发动机改进对航空业进步的影响。
{"title":"Power plants of the first aircraft","authors":"A. S. Drygin","doi":"10.18287/2541-7533-2023-22-4-158-169","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-158-169","url":null,"abstract":"The article is dedicated to the 140th anniversary of the construction of the first Russian aircraft designed by Alexander Fedorovich Mozhaisky. The main attention is paid to a comparative assessment of the parameters of the power plants of the Mozhaisky aircraft and some of the best known of the first heavier-than-air manned aircraft driven by a propeller. For the analysis, data published in various sources were used, primarily on the parameters of the elements of power plants (engines and propellers). An assessment was made of the sufficiency of the engine power of the first aircraft needed for their flight. The published materials of detailed studies of the aerodynamics of aircraft by A.F.Mozhaisky and the Wright brothers were used as the basis for an expert qualitative assessment of the aerodynamic characteristics of the compared aircraft. An analysis of the known statistical data and the results of the calculated estimates made it possible to show the impact of engine improvement on the progress in aviation.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"12 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139151448","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
Complex of algorithms for fast determination of the parameters of motion of high-speed vessels in the digital signal processing system of a space synthetic aperture radar 在空间合成孔径雷达数字信号处理系统中快速确定高速船只运动参数的复杂算法
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-145-157
S. N. Gusev, A. V. Moroz
The article presents the main considerations for determining the tangential velocity of high-speed vessels in the digital signal processing system of a space synthetic aperture radar with an amplitude-phase program discriminator in the azimuth channel. The article suggests a complex of algorithms for fast determination of the parameters of motion of high-speed vessels in the digital signal processing system of a space synthetic aperture radar. The article contains the results of semi-natural experiments that confirm the reliability of the algorithms and their effectiveness in solving the problem of observing the sea surface.
文章介绍了在空间合成孔径雷达的数字信号处理系统中确定高速船只切向速度的主要考虑因素,该系统在方位角信道中带有振幅相位程序鉴别器。文章提出了在空间合成孔径雷达数字信号处理系统中快速确定高速船运动参数的算法组合。文章载有半自然实验的结果,这些结果证实了算法的可靠性及其在解决海面观测问题方面的有效性。
{"title":"Complex of algorithms for fast determination of the parameters of motion of high-speed vessels in the digital signal processing system of a space synthetic aperture radar","authors":"S. N. Gusev, A. V. Moroz","doi":"10.18287/2541-7533-2023-22-4-145-157","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-145-157","url":null,"abstract":"The article presents the main considerations for determining the tangential velocity of high-speed vessels in the digital signal processing system of a space synthetic aperture radar with an amplitude-phase program discriminator in the azimuth channel. The article suggests a complex of algorithms for fast determination of the parameters of motion of high-speed vessels in the digital signal processing system of a space synthetic aperture radar. The article contains the results of semi-natural experiments that confirm the reliability of the algorithms and their effectiveness in solving the problem of observing the sea surface.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"46 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139149691","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
JSC “ODK” experience in implementing digital twin technologies in the design of gas turbine engines ODK "股份公司在燃气涡轮发动机设计中采用数字孪生技术的经验
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-25-36
K. A. Vinogradov, A. S. Nikulin, Y. Shmotin
The prerequisites for the formation, basic principles and approaches of the GTE design technology used in JSC “UEC” based on the concept of “digital twin” are considered. The components of the DT technology are fixed, three types of computer models included in the perimeter of the digital twin: models “as designed”, “as manufactured”, “as tested”, are considered. The necessity for constructing automated computational chains is noted and a brief description of the process is given.
在 "数字孪生 "概念的基础上,考虑了 "UEC "股份公司使用的 GTE 设计技术的形成前提、基本原则和方法。确定了数字孪生技术的组成部分,考虑了数字孪生周边包括的三种计算机模型:"设计 "模型、"制造 "模型和 "测试 "模型。指出了构建自动计算链的必要性,并简要介绍了这一过程。
{"title":"JSC “ODK” experience in implementing digital twin technologies in the design of gas turbine engines","authors":"K. A. Vinogradov, A. S. Nikulin, Y. Shmotin","doi":"10.18287/2541-7533-2023-22-4-25-36","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-25-36","url":null,"abstract":"The prerequisites for the formation, basic principles and approaches of the GTE design technology used in JSC “UEC” based on the concept of “digital twin” are considered. The components of the DT technology are fixed, three types of computer models included in the perimeter of the digital twin: models “as designed”, “as manufactured”, “as tested”, are considered. The necessity for constructing automated computational chains is noted and a brief description of the process is given.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"8 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139148718","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
Optimization of the parameters of a ground speed meter of low-flying aircraft based on the application of the theory of optimal filtration 在应用最优过滤理论的基础上优化低空飞行器地面测速仪的参数
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-78-85
M. E. Ivanov, V. V. Yezerskiy
The basic principle of parametric optimization according to the criterion of minimax of variance of the resulting error of estimation of the measured parameter is considered using the example of one of the main elements of an integrated measuring system – a ground speed meter. The meter consists of a Doppler ground speed sensor (location) and an accelerometer with a longitudinal axis of sensitivity (inertial). Based on the data on their measurement errors, the coefficients of the transfer functions of each channel of the meter containing these sensors were optimized. The result of the research is a comparative analysis of the resulting accuracy of the optimized meter for the invariant and non-invariant cases, based on the obtained graphs of the frequency distribution of variances. A reasonable conclusion is made about the advantage of an invariant or non-invariant meter depending on the frequency of the signal. The Matlab R2015a software was used for calculations.
以综合测量系统的主要元件之一--地面测速仪为例,探讨了根据所产生的测量参数估计误差方差最小准则进行参数优化的基本原理。该测量仪由一个多普勒地面速度传感器(定位)和一个具有纵轴灵敏度的加速度计(惯性)组成。根据其测量误差数据,对包含这些传感器的测量仪每个通道的传递函数系数进行了优化。研究结果是根据获得的方差频率分布图,对优化后的测量仪在不变和非不变情况下的精度进行比较分析。根据信号频率的不同,对不变式或非不变式测量仪的优势得出了合理的结论。计算使用了 Matlab R2015a 软件。
{"title":"Optimization of the parameters of a ground speed meter of low-flying aircraft based on the application of the theory of optimal filtration","authors":"M. E. Ivanov, V. V. Yezerskiy","doi":"10.18287/2541-7533-2023-22-4-78-85","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-78-85","url":null,"abstract":"The basic principle of parametric optimization according to the criterion of minimax of variance of the resulting error of estimation of the measured parameter is considered using the example of one of the main elements of an integrated measuring system – a ground speed meter. The meter consists of a Doppler ground speed sensor (location) and an accelerometer with a longitudinal axis of sensitivity (inertial). Based on the data on their measurement errors, the coefficients of the transfer functions of each channel of the meter containing these sensors were optimized. The result of the research is a comparative analysis of the resulting accuracy of the optimized meter for the invariant and non-invariant cases, based on the obtained graphs of the frequency distribution of variances. A reasonable conclusion is made about the advantage of an invariant or non-invariant meter depending on the frequency of the signal. The Matlab R2015a software was used for calculations.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"362 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139149058","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
Model of the turboprop engine reduction gear tooth harmonic spectral component 涡轮螺旋桨发动机减速齿轮齿谐波频谱分量模型
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-135-144
A. E. Sundukov, E. V. Shakhmatov
The width of spectral components in rotary machines is determined by the frequency modulation of the carrier from the rotor speed deviation in the stationary operation mode. It was shown that, for the tooth spectral component, it is not enough to take into account this factor only. The analysis of publications and the studies performed show that it is also determined by the effect of many other factors: process-related ones (errors in manufacturing and assembly of gear wheels), operation mode parameters (rpm, temperature, transmitted load); design-related factors (flexibility of drive parts; modification of the tooth face), as well as uneven wear of tooth flanks. Using the planetary gearbox of a turboprop engine as an example, the structure of the tooth spectral component width in function of the analyzed influencing factors was considered. Based on the vibration statistics for eighteen gearboxes in overhauled engines, the choice of a ratio for the spectral component width of a frequency modulated process was justified. This choice showed readings closest to the corresponding experimental data. For the vibration of ten gearboxes with different degrees of tooth flank wear, the corresponding dependence of the width on the wear is presented. A mathematical model for the tooth spectral component width in overhauled and newly manufactured gearboxes as the product of the constant coefficient with the deviation dispersion sum from the considered factors was proposed. The same dependence was also given for gearboxes with wear when adding the dispersion from wear to the dispersion sum. It was demonstrated that, for the presented case of the maximum wear, its fraction in the total width was about 50%, whereas the fraction of the frequency modulation from the operating system of adjusting relative rotor speed constancy in the stationary engine operation mode was equal to half of all the other factors.
旋转机械中频谱分量的宽度取决于静止运行模式下转子速度偏差对载波的频率调制。研究表明,对于齿谱分量,仅考虑这一因素是不够的。对出版物的分析和进行的研究表明,它还取决于许多其他因素的影响:与工艺有关的因素(齿轮制造和装配中的误差)、运行模式参数(转速、温度、传输载荷)、与设计有关的因素(传动部件的灵活性、齿面的修改)以及齿面的不均匀磨损。以涡轮螺旋桨发动机的行星齿轮箱为例,考虑了齿谱分量宽度结构与所分析影响因素的函数关系。根据大修发动机中 18 个齿轮箱的振动统计数据,对频率调制过程的频谱分量宽度比率进行了合理选择。这一选择所显示的读数与相应的实验数据最为接近。对于齿面磨损程度不同的十个齿轮箱的振动,提出了宽度与磨损程度的相应关系。提出了大修后和新制造的齿轮箱中齿谱分量宽度的数学模型,即常数系数与所考虑因素的偏差分散总和的乘积。在将磨损造成的偏差加入偏差总和时,也给出了磨损齿轮箱的相同依赖关系。结果表明,在最大磨损的情况下,其在总宽度中所占的比例约为 50%,而在发动机静止运行模式下,调整相对转子速度恒定性的操作系统所产生的频率调制的比例相当于所有其他因素的一半。
{"title":"Model of the turboprop engine reduction gear tooth harmonic spectral component","authors":"A. E. Sundukov, E. V. Shakhmatov","doi":"10.18287/2541-7533-2023-22-4-135-144","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-135-144","url":null,"abstract":"The width of spectral components in rotary machines is determined by the frequency modulation of the carrier from the rotor speed deviation in the stationary operation mode. It was shown that, for the tooth spectral component, it is not enough to take into account this factor only. The analysis of publications and the studies performed show that it is also determined by the effect of many other factors: process-related ones (errors in manufacturing and assembly of gear wheels), operation mode parameters (rpm, temperature, transmitted load); design-related factors (flexibility of drive parts; modification of the tooth face), as well as uneven wear of tooth flanks. Using the planetary gearbox of a turboprop engine as an example, the structure of the tooth spectral component width in function of the analyzed influencing factors was considered. Based on the vibration statistics for eighteen gearboxes in overhauled engines, the choice of a ratio for the spectral component width of a frequency modulated process was justified. This choice showed readings closest to the corresponding experimental data. For the vibration of ten gearboxes with different degrees of tooth flank wear, the corresponding dependence of the width on the wear is presented. A mathematical model for the tooth spectral component width in overhauled and newly manufactured gearboxes as the product of the constant coefficient with the deviation dispersion sum from the considered factors was proposed. The same dependence was also given for gearboxes with wear when adding the dispersion from wear to the dispersion sum. It was demonstrated that, for the presented case of the maximum wear, its fraction in the total width was about 50%, whereas the fraction of the frequency modulation from the operating system of adjusting relative rotor speed constancy in the stationary engine operation mode was equal to half of all the other factors.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"40 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139151331","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
Investigation of the edge effect in composites using the ANSYS software in a two-dimensional formulation 使用 ANSYS 软件研究二维配方中复合材料的边缘效应
Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-125-134
Yu. V. Skvortsov, M. A. Evtushenko
The possibility of using the universal software ANSYS to study the concentration of interlaminar stresses near the free edges of laminated composites in a two-dimensional finite element formulation is considered. In this case, the cross-section of a rectangular four-layer composite plate of finite width with free side edges subject to uniform axial deformation is simulated. To create it, an original technique is proposed which consists in using thermal stress. The presented calculation results are in good agreement with the results of other authors.
本研究考虑了使用通用软件 ANSYS 在二维有限元模型中研究层状复合材料自由边缘附近层间应力集中的可能性。在这种情况下,我们模拟了矩形四层有限宽度复合板的横截面,其自由边受到均匀轴向变形的影响。为此,提出了一种使用热应力的原创技术。计算结果与其他作者的结果非常吻合。
{"title":"Investigation of the edge effect in composites using the ANSYS software in a two-dimensional formulation","authors":"Yu. V. Skvortsov, M. A. Evtushenko","doi":"10.18287/2541-7533-2023-22-4-125-134","DOIUrl":"https://doi.org/10.18287/2541-7533-2023-22-4-125-134","url":null,"abstract":"The possibility of using the universal software ANSYS to study the concentration of interlaminar stresses near the free edges of laminated composites in a two-dimensional finite element formulation is considered. In this case, the cross-section of a rectangular four-layer composite plate of finite width with free side edges subject to uniform axial deformation is simulated. To create it, an original technique is proposed which consists in using thermal stress. The presented calculation results are in good agreement with the results of other authors.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"43 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139151380","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
期刊
VESTNIK of Samara University. Aerospace and Mechanical Engineering
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1