NAFEMS Americas and Digital Engineering (DE) teamed up (once again) to present CAASE, the (now Virtual) Conference on Advancing Analysis & Simulation in Engineering, on June 16-18, 2020!

CAASE20 brought together the leading visionaries, developers, and practitioners of CAE-related technologies in an open forum, unlike any other, to share experiences, discuss relevant trends, discover common themes, and explore future issues, including:
-What is the future for engineering analysis and simulation?
-Where will it lead us in the next decade?
-How can designers and engineers realize its full potential?
What are the business, technological, and human enablers that will take past successful developments to new levels in the next ten years?

Resource Abstract

This work focuses on design and optimization of antenna at different frequency bands, RF interference analysis and lightning strike on aircraft and space systems.



When aircraft is airborne, the pilot rely on their antenna systems to function well at any circumstances. So, the design and performance of the antenna when placed on the complex aircraft system environment becomes extremely important. The analysis of antenna in free space and its placement on aircraft and satellite is performed using bi-directional hybrid solver approach of SIMULIA CST STUDIO SUITE®. This approach allows the possibility to divide large models into small domains and solve each domain using the appropriate solver via field source coupling automatically. The mesh can be relaxed for full model containing imported source (field of antenna) and convergence can be achieved faster, thus reducing the simulation time.



Radio frequency (RF) interference between co-located systems on aircraft is a key concern for system designer and must be understood at an early design phase. A dedicated RF interference task is used to find the desired and undesired coupling between all the communication and detection systems. The violation matrix is generated for clear picture of Electromagnetic Interference-Margins (EMI-Margins) for all possible TX/RX combinations and visually indicate the potential region of interference. Higher the EMI-Margin, higher the probability of interference.



Almost all aircraft are struck by lightning on average once a year. The tremendous growth of lightweight composite materials such as carbon fiber reinforced (CFC) in place of metals increases the complexity of lightning-safe design, since composites are poor conductors and do not provide much electric shielding. The lightning EM Pulse Simulation (LEMP) is performed using TLM solver for two different aircraft skin Aluminum and CFC and susceptibility analysis of cables and electronics inside the aircraft is studied against the lightning stroke. TLM solver offers octree meshing, compact modelling, thin panel material and bi-directional coupling with cable solver. Lightning attachment starts with the initial attachment zones which has been analyzed with electrostatic simulation.



The presentation details simulation-based approach to address the three key design and integrity aspects of communication and structure for an aircraft, satellite, Unmanned Aerial Vehicle (UAV). In particular, the antenna placement, RF interference and lightning analysis on a UAV, satellite and aircraft.