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2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)最新文献

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Validation Flight Experiment for a Sounding Balloon Photovoltaic-based Attitude Determination System 探空气球光伏测姿系统验证飞行试验
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511760
G. Cataldi, M. Gemignani, S. Marcuccio
Sounding balloons have proven to be a very effective low-cost method to bring scientific and commercial payloads to the near-space environment. In the frame of our ongoing effort towards the development of a small stratospheric platform with autonomous flying capabilities, we have undertaken the design and manufacture of a flight experiment to verify the possibility to perform onboard attitude determination using the solar cell power output measurements to complement the inertial sensor. The system is based on six low-cost terrestrial solar cells placed on the sides of a box-shaped gondola, lifted to about 34 km altitude by a weather balloon. We describe the system architecture, the results of the first experimental flight and the post-landing attitude reconstruction.
探空气球已被证明是一种非常有效的低成本方法,可以将科学和商业有效载荷带到近空间环境。在我们不断努力开发具有自主飞行能力的小型平流层平台的框架中,我们已经承担了设计和制造飞行实验的任务,以验证使用太阳能电池功率输出测量来补充惯性传感器进行机载姿态确定的可能性。该系统基于6个低成本的地面太阳能电池,安装在一个箱形贡多拉的两侧,由气象气球提升到大约34公里的高度。介绍了系统结构、首次试飞结果和着陆后的姿态重建。
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引用次数: 0
Design and testing of an autonomous ARTVA detector for small drones 小型无人机自主ARTVA探测器的设计与测试
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511664
Francesco De Giudici, Federico Toson, A. Piva, Pietro Artusi, L. Olivieri, C. Bettanini
Avalanche rescue operations require quick localization of buried people. Organized rescue intervention is often not fast enough, since professional rescuers are not directly present in the avalanche area. Therefore, companion rescue remains the most effective option for rapid response, especially in case of employment of avalanche transceivers. In this context, the AVERLA project is developing avalanche localization instrumentation for small drones, to provide winter mountain recreationists, athletes and rescue teams with a fast and accurate system to improve the buried search. In this paper, a custom radiofrequency localization system, tuned on the avalanche transceivers transmission frequency, is described and its performance is assessed. Last, the integration of the instrument on an off-the-shelf drone, as baseline for further miniaturization, is presented.
雪崩救援行动需要快速定位被埋人员。有组织的救援干预往往不够快,因为专业救援人员没有直接出现在雪崩区域。因此,同伴救援仍然是快速响应的最有效选择,特别是在使用雪崩收发器的情况下。在此背景下,AVERLA项目正在为小型无人机开发雪崩定位仪器,为冬季山地游憩者、运动员和救援队提供快速准确的系统,以提高埋地搜索。本文介绍了一种基于雪崩收发器发射频率的自定义射频定位系统,并对其性能进行了评估。最后,提出了将仪器集成到现成的无人机上,作为进一步小型化的基线。
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引用次数: 0
Measurement system for small propeller propulsion 小型螺旋桨推进力测量系统
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511711
J. Pieniążek, Piotr Cieciński
The propeller propulsion is mainly used kind of propulsion in small unmanned flying vehicles. In this propulsion an engine, in the most cases electric motor, powers the propeller which produces thrust. The efficiency of the use of engine energy by propeller depends on the proper propeller design or selection taking into account operating conditions. The whole propulsion characteristics are important for the numerical model development and advanced control systems. The optimized propeller increases the flight time of the particular vehicle. The test stand and testing method are main subjects of the paper. The tests of the motor with propeller or propeller only using some motor needs measurement devices of important variables, which are specified by theoretical analysis. Besides the measured system structure, main parts and user interface the sample results of raw data, computed propeller parameters, and pressure distribution along propeller blade are presented. The last data gives possibility for further analysis of the influence of a propeller geometry on propulsion parameters.
螺旋桨推进是小型无人飞行器主要采用的一种推进方式。在这种推进中,发动机,在大多数情况下是电动机,为产生推力的螺旋桨提供动力。螺旋桨利用发动机能量的效率取决于考虑到运行条件的适当的螺旋桨设计或选择。整体推进特性对数值模型的建立和先进的控制系统具有重要意义。优化后的螺旋桨增加了特定飞行器的飞行时间。试验台和试验方法是本文的主要研究内容。电机配螺旋桨或螺旋桨只配部分电机的试验需要重要变量的测量装置,这些测量装置由理论分析规定。除了实测的系统结构、主要部件和用户界面外,还给出了原始数据的采样结果、计算的螺旋桨参数和沿桨叶的压力分布。最后的数据为进一步分析螺旋桨几何形状对推进参数的影响提供了可能。
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引用次数: 5
MPRR and Pegasis Routing Protocol comparison for Aerospace application 航空航天应用MPRR和Pegasis路由协议的比较
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511733
M. Cagnetti, M. Leccisi, F. Leccese
WSNs (Wireless sensor Networks) are a very robust and flexible structure which can be adapted to each scenario. The choice of the correct routing algorithm is a central point of a WSN, so a comparison between two routing algorithms, for an optical sensor network based on Lidar sensors, has been studied to propose a low consumption structure to improve security in aerospace scenario.
无线传感器网络(WSNs)是一种非常健壮和灵活的结构,可以适应各种场景。选择正确的路由算法是无线传感器网络的中心问题,因此,针对基于激光雷达传感器的光传感器网络,研究了两种路由算法的比较,提出了一种低消耗的结构,以提高航空场景下的安全性。
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引用次数: 1
Simulation Researches of the PROPWING Airplane Propulsion System 螺旋桨飞机推进系统仿真研究
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511725
R. Kliza, M. Wendeker, Jan Pytka, P. Kasprzak
The PROPWING denotes a novel propulsion concept for light airplanes, sailplanes and motorgliders, originally proposed by the authors. A number of small electric motors are installed in the wings and the propellers rotate throughout openings in the wing skin. The concept has been examined in a flight test campaign with the use of a scale model airplane and the system showed its functionality, what was reported in past works. This paper includes results of numerical simulations of the PROPWING system performed with the use of CFD-software.
proprowing是作者最初提出的一种用于轻型飞机、滑翔机和摩托艇的新型推进概念。机翼上安装了许多小型电动机,螺旋桨在机翼表皮的开口中旋转。这个概念已经在飞行测试活动中进行了检验,使用了一架比例模型飞机,该系统显示了它的功能,这是过去工作中报道的。本文给出了利用cfd软件对prowing系统进行数值模拟的结果。
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引用次数: 0
LEDSAT 1U CubeSat thermal analysis and steady state calibration for thermal-vacuum testing 用于热真空测试的LEDSAT 1U CubeSat热分析和稳态校准
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511666
Emanuele Bedetti, Niccolò Picci, Andrea Gianfermo, Lorenzo Frezza, Diego Amadio, F. Curianò, Paolo Marzioli, A. Delfini
This paper reports the results from the thermal analysis, the steady state analysis and the thermal vacuum testing from the LEDSAT 1U CubeSat environmental qualification. While the thermal analysis has been computed to state the compliance of the CubeSat to the orbital environment, the steady state analysis has been performed to confirm the suitability of the selected thermal vacuum test levels for the survivability and operational ranges of the satellite components. The spacecraft system-level thermal vacuum testing has given satisfying results, with perfect functionalities of the spacecraft and with a successful qualification of the PFM for spaceflight.
本文报道了LEDSAT 1U CubeSat环境定性的热分析、稳态分析和热真空测试结果。在计算热分析以说明立方体卫星符合轨道环境的同时,进行了稳态分析,以确认选定的热真空测试等级对卫星部件的生存能力和工作范围的适用性。航天器系统级热真空试验取得了令人满意的结果,航天器各项功能完善,PFM在航天飞行中取得了成功。
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引用次数: 0
Inspection of the undulation structure with an in-plane differential flexible array probe 面内差分柔性阵列探头对波动结构的检测
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511698
Lei Peng, C. Ye, Yu Tao, Cai Long, Ming Li
Blade is a crucial part in steam turbine that chronically exposes to an atmosphere of high temperature, humidity, and pressure, which prone to cause fatigues in the structure. The root of a turbine blade is in undulation shape giving rise to the difficulties for inspection with conventional probes. This work proposes a novel flexible array eddy current testing (ECT) probe for the turbine blade root inspection. The proposed probe employs an in-plane differential scheme to reduce the common mode noise and increase the sensitivity to small defects. It works with three modes to improve the reliability of detecting defects in different orientations. It keeps the lift-off almost constant when scans the undulation shape structure, as the shape of the sensor array is flexible and is bended according to the sample surface. A prototype probe has been developed and tested by inspecting of a blade sample with artificial and nature defects. The probe can identify defect with dimensions length×wldth×depth=z.u mmxu.z mm×0.2 mm with various orientations and locations. The experiment results demonstrate that the probe has high sensitivity for defects at the root of turbine.
汽轮机叶片是汽轮机的关键部件,长期暴露在高温、高湿、高压环境中,容易引起结构疲劳。涡轮叶片根部呈波动状,给常规探头的检测带来了困难。本文提出了一种用于涡轮叶片根部检测的柔性阵列涡流检测探头。该探头采用平面内差分方案,降低了共模噪声,提高了对小缺陷的灵敏度。它采用三种模式,提高了不同方向缺陷检测的可靠性。当扫描波动形状结构时,由于传感器阵列的形状是灵活的,并且根据样品表面弯曲,因此可以保持升力几乎恒定。通过对叶片人工缺陷和自然缺陷的检测,研制了一种探针样机,并对其进行了测试。探头可以识别尺寸为length×wldth×depth=z的缺陷。u mmxu。Z mm×0.2 mm具有不同的方向和位置。实验结果表明,该探头对涡轮根部缺陷具有较高的灵敏度。
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引用次数: 2
TeraHertz inspections of painted steel samples 涂装钢样品的太赫兹检测
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511692
I. Catapano, G. Ludeno, F. Soldovieri, T. Toullier, J. Dumoulin
Aerospace industry needs accurate coating thickness measurement as well as adhesion testing for preventing the corrosion of wear of metal substrates. In this frame, a constant attention is towards the potentialities offered by non-invasive sensing techniques and their technological advancements. This communication deals with THz surveys of painted steel samples. Specifically, we account for time of flight THz imaging, enhanced by a noise filtering procedure based on the Singular Value Decomposition of the data matrix. This analysis allowed for detecting paint coating layers and providing images of them and of the probed face of the steel substrate.
航空航天工业需要精确的涂层厚度测量以及附着力测试,以防止金属基体的腐蚀和磨损。在这个框架中,不断关注非侵入性传感技术及其技术进步所提供的潜力。本通讯涉及涂漆钢样品的太赫兹测量。具体来说,我们考虑了飞行时间太赫兹成像,并通过基于数据矩阵奇异值分解的噪声滤波过程进行了增强。这种分析允许检测油漆涂层层,并提供它们的图像和钢基板的探测面。
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引用次数: 0
Characterization of a new positioning sensor for space capture 一种用于空间捕获的新型定位传感器的特性
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511704
Alex Caon, Francesco Branz, A. Francesconi
Space missions that focus on On-Orbit-Servicing often involve the capture of a target satellite or space debris as a key event in the operational sequence. Space robots are among the most promising technologies to perform this task and mission architectures involving manipulators proved successful in orbit. Such mission scenarios are complex and imply a considerable risk of collision between the chaser and the target vehicles. For the sake of safety, it is of key importance to accurately position the capture interface w.r.t. the gripping point on the target, especially when relative distance is very low. During these phases, the guidance and control algorithms rely on pose measurements provided by navigation sensors that are generally able to reconstruct the target position and orientation only up to a certain distance between the camera and the target. To the purpose of having a complete control of the capture interface until contact, a new sensor based on a LED and a matrix of phototransistors has been developed. This paper describes the sensor and provides its preliminary characterization. A simple theoretical description of the sensor behavior is obtained from geometrical considerations, while experiments have been performed to measure the performances of the actual hardware implementation of the system.
以在轨服务为重点的空间任务往往涉及捕获目标卫星或空间碎片,这是操作程序中的一个关键事件。空间机器人是执行这一任务的最有前途的技术之一,涉及操纵器的任务架构在轨道上被证明是成功的。这样的任务场景是复杂的,并且意味着在追逐者和目标车辆之间有相当大的碰撞风险。为了安全起见,特别是在相对距离很低的情况下,准确定位捕获界面与目标夹持点之间的位置至关重要。在这些阶段,制导和控制算法依赖于导航传感器提供的姿态测量,这些传感器通常只能在相机和目标之间的一定距离内重建目标的位置和方向。为了完全控制捕获接口直到接触,开发了一种基于LED和光电晶体管矩阵的新型传感器。本文介绍了该传感器并提供了其初步特性。从几何角度对传感器的行为进行了简单的理论描述,同时进行了实验来测量系统实际硬件实现的性能。
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引用次数: 3
Research on errors of magnetic field sensors and algorithms for determining 3D spatial deviation in aeronautical heading reference systems 航空航向参考系中磁场传感器误差及三维空间偏差确定算法研究
Pub Date : 2021-06-23 DOI: 10.1109/MetroAeroSpace51421.2021.9511761
M. Witoś, A. Szelmanowski, A. Pazur, Jerzy Borowski
In the XXI century, magnetic measurements are widely used in diverse applications. This paper presents the practical application of magnetic measurements in the Magnetic Heading System (MHS) and the Helmet Mounted Cueing System (HMCS) on board of civilian and military aircrafts. The area of application of magnetic field sensors and the corresponding measuring ranges and errors are presented. The research problem and the method of its solution were defined in relation to the determination of spatial deviation occurring in aviation heading indicating systems for various angles of spatial orientation. The mathematical relationships describing the components of the Earth's magnetic field and disturbing fields originating from hard and soft magnetic iron, which are structural elements of the aircraft, were given. An innovative element is a simulation model, developed in the Matlab-Simulink package, enabling the determination of 2D horizontal deviation and 3D spatial deviation for the given spatial orientation angles. Selected results of research on the influence of inaccuracies in the positioning of magnetometers and the possibility to identify their errors using the spectral analysis applied to the course of magnetic deviation are presented.
在二十一世纪,磁测量被广泛应用于各种应用中。本文介绍了磁测量在民用和军用飞机磁航向系统(MHS)和头盔提示系统(HMCS)中的实际应用。介绍了磁场传感器的应用范围、测量范围和误差。针对航空航向指示系统在不同空间定向角度下发生的空间偏差的确定问题,确定了研究问题及其求解方法。给出了飞机结构元件地球磁场和来自硬磁铁和软磁铁的干扰场组成的数学关系。一个创新元素是仿真模型,在Matlab-Simulink包中开发,可以确定给定空间方向角的2D水平偏差和3D空间偏差。本文介绍了磁力计定位误差影响的若干研究结果,以及利用磁偏过程中的频谱分析识别磁力计误差的可能性。
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引用次数: 0
期刊
2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)
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