A5045607005- Electromagnetic Compatibility and Measurements
- Electromagnetic Compatibility and Noise Suppression
- Advanced Antenna and Metasurface Technologies
- Smart Materials for Construction
- Lightning and Electromagnetic Phenomena
- Planetary Science and Exploration
- Electromagnetic Scattering and Analysis
- Electromagnetic wave absorption materials
- Spacecraft Design and Technology
- Geophysical Methods and Applications
- Spacecraft and Cryogenic Technologies
- Electromagnetic Simulation and Numerical Methods
- Numerical methods in engineering
- Additive Manufacturing and 3D Printing Technologies
- Gyrotron and Vacuum Electronics Research
- Business, Innovation, and Economy
- Microwave Engineering and Waveguides
- Wind Energy Research and Development
- Aerodynamics and Fluid Dynamics Research
- Space Exploration and Technology
- Microwave Imaging and Scattering Analysis
- Scientific Research and Discoveries
- Magnetic and Electromagnetic Effects
- Pulsed Power Technology Applications
- Monetary Policy and Economic Impact
Instituto Nacional de Técnica Aeroespacial
2020-2024
University of Pennsylvania
2024
Ingeniería de Sistemas para la Defensa de España
2018-2019
We provide a model able to predict the shielding effectiveness (SE) of carbon fiber composite (CFC) panels made stacked layers conducting fibers. This permits us obtain simple formulas in which only parameters needed are sheet square resistance and effective panel thickness. These tools let minimum SE, always increases with frequency therefore constituting worst case, from an electromagnetic perspective. Consequently, measurement SE requirements can be simply measured micro-ohmmeter using...
The development of devices for the in situ resource utilization (ISRU) lunar surface powder (regolith) by means microwaves needs regolith simulants with electromagnetic properties similar to regolith. This document deals measurement complex permittivity and dielectric loss tangent aforementioned at ambient temperature from 400 MHz 20 GHz, performing measurements using two dust simulants, EAC-1A JSC-2A, resulting, on one hand, values ε′=−0.0432f+4.0397 simulant JSC-2A simulant, other...
The tendency over the last decades in aerospace industry is to substitute classic metallic materials with new composite such as carbon fiber composites (CFC), glass, etc., well adding electronic devices ensure safety and proper platform operation. Due this, protect aircraft against Electromagnetic Environmental Effects (E3), it mandatory develop accurate electromagnetic (EM) characterization measurement systems analyze behavior of components. In this article, several methods are described...
The increasing number of electronic devices on board and the use novel composite materials in aerospace industry create a harsh electromagnetic environment that must be studied. In this article, UAV demonstrator (DEMO-E3) with different test cases is evaluated through low-level swept field following nested resonant chambers approach, which framed under high intensity radio frequency measurements. aim to analyze difference terms shielding effectiveness enclosure considering apertures each...
The rise of fly-by-wire systems together with the utilization new composite materials make it more and difficult to assess guarantee aircraft electromagnetic compatibility (EMC). As a result, design phase becomes paramount importance in production process. Performing actual EMC tests over different configurations such would be very costly time consuming, so reliable computational techniques are being explored last years. However, proper validation is needed order gain confidence results...
Novel materials, as multi-ply carbon fiber composites (CFC), are increasingly used in the industry due to their outstanding mechanical properties relation weight. In this regard, from standpoint of electromagnetic compatibility (EMC), shielding effectiveness (SE) is a key parameter that often determines scope for application given material. This article addresses two complementary standards, ASTM D4935 and IEC 61000-4-21, SE measurement different CFC test samples with more than 10 layers...
Along the years, RADAR absorbing materials (RAM's) have been widely introduced in aeronautic applications and platforms. However, this kind of presents three main problems for certain when they are intended to be used real operations. First, must scalable from a laboratory sample actual size, at reasonable cost. Second, able work without metal backing non‐metallic vehicles or other objects which surface might not flat. Indeed, should also flexible adaptable. Finally, their properties against...
Modern aircraft employ profusely carbon fiber composites (CFC) for their construction. Then, it is mandatory to characterize the behaviour of this kind materials its use under harsh electromagnetic environments. In that sense, paper presents application two standards, ASTM D4935 and IEC 61000-4-21, measurement shielding effectiveness (SE) aeronautical multi-ply CFC laminates frequently used construction aircraft. Each technique well suited a specific material or realization frequency range....
In recent years, in the aerospace industry, there has been a trend based on replacing classic metallic materials with new advanced such as carbon fiber composites (CFC), fiberglass, etc. Due to this, electromagnetic (EM) characterization of these is essential maintain safety and EM compatibility. This article will focus free space measurement technique, from which series optimization algorithms have developed, allowing extraction permittivity permeability frequency range up 40 GHz using...
Efficiently modeling thin features using the finite-difference time-domain (FDTD) method involves a considerable reduction in spatial mesh size. However, real-world scenarios, such reductions can lead to unaffordable memory and CPU requirements. In this manuscript, we present two stable efficient techniques FDTD handle narrow apertures on conductive panels. One technique employs conformal methods, while other utilizes subgridding methods. We validate their performance compared classical...
This work outlines the procedure to establish a system for assessing materials' complex permittivity and permeability within 110-170 GHz frequency range. We present employed methodology calibration system, incorporating dual approach using TRL (Thru-Reflect-Line) GRL (Gated-Reflect-Line) methods. Following that, smoothing technique is used enhance accuracy of results. Tests were conducted on HIPS sample validate system's performance, demonstrating results' reliability across entire measured...
This paper describes the process followed to implement a system characterize complex permittivity of materials in 10-330 GHz frequency band. Firstly, method used and system's calibration are shown, consisting double TRL (Thru-Reflect-Line) GRL (Gated-Reflect-Line). Subsequently, smoothing technique is improve accuracy results. Finally, test performed on quartz glass fiber samples, showing that results quite reliable over entire measured bandwidth.
The development of devices for In-Situ Resource Utilization (ISRU) the lunar surface powder (regolith) by means microwaves needs regolith simulants with electromagnetic properties similar to regolith. This document deals measurement complex permittivity and dielectric loss tangent aforementioned at ambient temperature from 400 MHz 20 GHz. In addition, further studies are carried out taking into account humidity samples their densities. obtained results will be applicable comparing measured...
This paper describes the process followed to implement a system characterize complex permittivity of materials in 10-330 GHz frequency band.Firstly, method used and system's calibration are shown, consisting double TRL (Thru-Reflect-Line) GRL (Gated-Reflect-Line). Subsequently, smoothing technique is improve accuracy results.Finally, test performed on quartz glass fiber samples, showing that results quite reliable over entire measured bandwidth.
The electromagnetic performance of aerial platforms, which are composed mostly nonmetallic materials, is a subject great interest at present time. behavior this type composite structure against environmental effects (E3), such as lightning, not well-studied in the case metalic structures. purpose article to characterize joints platforms constructed mainly materials. study these fundamental because electrical discontinuities or preferential routes can produce changes an aircraft. proposed...
Aerospace or automotive industries employ novel composite 3D printed materials in their manufacturing processes to improve performance and reduce costs. Obtaining the electromagnetic (EM) characterization of these a combination them is essential ensure safety EM compatibility. In this paper, development test bench with rod antennas for measurements free space presented. A complete design described, from simulation analysis validation measurements. The aim achieve robust which allow very...
This paper explains the research process carried out for development and manufacture of planetary protection cover carrying electromagnetic compatibility (EMC) tests an-isotropic magneto-resistance (AMR) sensor ExoMars 2020 mission. mission has strict bioburden requirements. The properties several materials have been analyzed in order to study their transmission coefficient innovation this project is use fused deposition modeling (FDM) technology as manufacturing method. Additive presented a...
Even though the colonization of Moon is still a long term objective for mankind, there already exist studies analysing different usages lunar dust (regolith) might have. Following this idea, several simulants real regolith have been developed in order to understand its behaviour and be able work with it more efficient way. This paper intends contribute those efforts, investigating electromagnetic properties EAC-1A JSC-2A, which had never measured before. document presents results obtained...
Nowadays, there exists a tendency for replacing typical metallic materials in the aerial platforms nonmetallic ones. However, this arises many questions, example, how they react against Electromagnetic Enviromental Effects (E3), where we can count lightning effects among others. Due to this, aim of work is characterize different type joints commonly used aerospace industry Carbon Fiber Composite (CFC) fuselages. This analysis crucial order figure out possible electrical discontinuities that...