International Review of Aerospace Engineering最新文献_第5页

Quadrotor Tracking Control Based on Optimized Fuzzy Logic Controller 基于优化模糊控制器的四旋翼跟踪控制

International Review of Aerospace Engineering Pub Date : 2019-12-31 DOI: 10.15866/irease.v12i6.16666

I. Iswanto, F. Mujaahid, Rohmansyah Rohmansyah, T. A. Nugraha, V. Shekher

引用次数: 0

Innovative Concepts of Electric System Architectures and Hybrid Propulsion System for Regional Turboprop Aircraft 支线涡桨飞机电力系统结构和混合动力推进系统的创新概念

International Review of Aerospace Engineering Pub Date : 2018-06-30 DOI: 10.15866/irease.v11i3.14775

M. Fioriti

引用次数: 1

Thermal Subsystem Operational Times Analysis for Ubiquitous Small Satellites Relay in LEO 低轨道无所不在的小卫星中继热子系统工作时间分析

International Review of Aerospace Engineering Pub Date : 2018-04-30 DOI: 10.15866/IREASE.V11I2.13663

S. Ekpo

{"title":"Thermal Subsystem Operational Times Analysis for Ubiquitous Small Satellites Relay in LEO","authors":"S. Ekpo","doi":"10.15866/IREASE.V11I2.13663","DOIUrl":"https://doi.org/10.15866/IREASE.V11I2.13663","url":null,"abstract":"The success of the satellite subsystems engineering depends on the optimal design, modeling, simulation, and validation of the deliverables of the conceptual and mission design objectives. This paper presents the operational times analysis of the thermal control subsystem onboard a 97-kg microsatellite in low-Earth orbit during an eclipse period. Power-storing, communication downlink and uplink, payload processing, and thermal control overpower modes were implemented for a communication mission under worst-case orbital patterns. An embedded digital temperature and lighting controller circuitry was designed and practically validated to effect a desired logic. For an average eclipse period of 34.4 mins, the operational times of the thermal subsystem at altitudes of 400 km, 500 km, and 600 km are 38.6 mins, 38.1 mins, and 37.7 mins respectively. Moreover, the thermal control subsystem simulation reveals that reducing the operational times of non-thermal control subsystems during the eclipse period by 50 % can result in an operational factor of safety of over 1.5. At least 10 dB data link transmission margin can be achieved. The reported findings show that the operational times of spacecraft subsystems overpower modes can be reconfigured in orbit to reliably sustain the operating conditions of the capability-based satellite components for ubiquitous communication.","PeriodicalId":14462,"journal":{"name":"International Review of Aerospace Engineering","volume":"17 1","pages":"48-57"},"PeriodicalIF":0.0,"publicationDate":"2018-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73430138","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: 9

Characteristics of the Ground-Based User Equipment of Satellite Radio Navigation System Employing Pseudolites in Noisy Environments 噪声环境下伪卫星无线电导航系统地基用户设备特性研究

International Review of Aerospace Engineering Pub Date : 2018-04-30 DOI: 10.15866/IREASE.V11I2.13938

V. N. Tyapkin, A. Korovin, V. Nerovny, I. N. Ishchuk, E. Kabulova

{"title":"Characteristics of the Ground-Based User Equipment of Satellite Radio Navigation System Employing Pseudolites in Noisy Environments","authors":"V. N. Tyapkin, A. Korovin, V. Nerovny, I. N. Ishchuk, E. Kabulova","doi":"10.15866/IREASE.V11I2.13938","DOIUrl":"https://doi.org/10.15866/IREASE.V11I2.13938","url":null,"abstract":"This article discusses the joint functioning of satellite radio navigation systems and their augmentations in the form of pseudolite networks under radio interference of various natures and intensities. The achievable precision in determining the coordinates of the object in noisy environments using and considering the estimates of the signal power level of navigational satellites, pseudolites and interference, is an indicator of the effectiveness of such joint systems. The paper refines the model of undisturbed motion of navigation satellites in terms of determining the geocentric coordinates of pseudolites (PL). A model for determining the signal levels of navigation satellites and pseudolites at the input of user equipment (UE) of satellite radio navigation systems (SRNS) was constructed. The algorithm was refined for calculating the mean square error (MSE) to determine coordinates when sharing signals of pseudolites and navigational satellites (NS) in noisy environments. The method was developed and the energy and precision characteristics of SRNS UE operated by NS and PL signals in noisy environments were determined.","PeriodicalId":14462,"journal":{"name":"International Review of Aerospace Engineering","volume":"39 1","pages":"58-65"},"PeriodicalIF":0.0,"publicationDate":"2018-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74945547","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

Unipolar Magnetic Bearing for High-Speed Electric Motor of Aircraft Air Conditioning System: Structure and Optimization 飞机空调系统高速电机用单极磁轴承:结构与优化

International Review of Aerospace Engineering Pub Date : 2018-04-30 DOI: 10.15866/IREASE.V11I2.14098

F. Ismagilov, V. Vavilov, I. Sayakhov

引用次数: 0

Fast Analysis of Onboard Measurements of the Earth Magnetic Field for the Purpose of Microaccelerations Decrement on Board of the “AIST” Small Spacecraft During its Uncontrolled Orbital Flight “AIST”小航天器在非受控轨道飞行中为减小微加速度而进行的星载地磁场测量快速分析

International Review of Aerospace Engineering Pub Date : 2018-04-30 DOI: 10.15866/IREASE.V11I2.13238

A. Sedel'nikov

引用次数: 23

Optimization of Synchronous Electric Motors with Asynchronous Start by Genetic Algorithms 异步起动同步电动机的遗传算法优化

International Review of Aerospace Engineering Pub Date : 2018-04-30 DOI: 10.15866/IREASE.V11I2.13365

F. Ismagilov, V. Vavilov, R. Urazbakhtin

引用次数: 3

Visual Servoing of a Spherical Inverted Pendulum on a Quadrotor Using Backstepping Controller 基于反步控制器的四旋翼球面倒立摆视觉伺服

International Review of Aerospace Engineering Pub Date : 2018-02-28 DOI: 10.15866/irease.v11i1.13460

Soukaina Krafes, Z. Chalh, A. Saka

引用次数: 1

Numerical and Experimental Studies of a Turbocharger Centrifugal Compressor for Combustion Engine Boost 内燃机增压涡轮增压器离心压气机的数值与实验研究

International Review of Aerospace Engineering Pub Date : 2018-02-28 DOI: 10.15866/IREASE.V11I1.13466

A. Kartashev, A. Martynov, O. Mashkov

{"title":"Numerical and Experimental Studies of a Turbocharger Centrifugal Compressor for Combustion Engine Boost","authors":"A. Kartashev, A. Martynov, O. Mashkov","doi":"10.15866/IREASE.V11I1.13466","DOIUrl":"https://doi.org/10.15866/IREASE.V11I1.13466","url":null,"abstract":"Increasing efficiency and extending the stable operating range of a turbocharger centrifugal compressor for combustion engine boost is one way to improve engines economical operation indices. In order to increase the centrifugal compressor’s efficiency, this work involves the numerical studies of the flow structure in the most widespread types of vaned diffusers: one-row, two-row, three-row, splitter and wedge diffuser. To confirm the adequacy of the numerical modeling results, the authors verified the design model and formulated recommendations on its settings to ensure the best correspondence between calculation results and experimental data. To extend the stable operating range of the centrifugal compressor, the authors performed numerical and experimental studies of casing treatments - ported shrouds and ring grooves in the shroud. The research findings demonstrated the high efficiency of the ported shroud, which allows the extension of the stable operating range by 4.5%. The authors carried out experimental studies of the influence of the centrifugal compressor diffuser type – vaned and vaneless – on the ported shroud efficiency. The displacement of the surge line is achieved in the configuration with the vaneless diffuser due to the implementation of the ported shroud is 10-12% greater than in the configuration with the vaned diffuser. The article is also of interest for designers of centrifugal compressors of turboshaft and small-sized turbojet engines, for which the problem of increasing the efficiency and extending the stable operating range of the compressor is also actual.","PeriodicalId":14462,"journal":{"name":"International Review of Aerospace Engineering","volume":"17 1","pages":"27-38"},"PeriodicalIF":0.0,"publicationDate":"2018-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78765927","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

Numerical study of the circular cylinder in supersonic ground effect conditions 超声速地面效应条件下圆柱的数值研究

International Review of Aerospace Engineering Pub Date : 2018-02-28 DOI: 10.15866/IREASE.V11I1.13696

O. Şugar‐Gabor

引用次数: 0