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Full Flight Simulator: testing and research platform

Full Flight Simulator: testing and research platform

14, 21, 28 JANUARY 2022, 4 FEBRUARY 2022

The webinar deals with an introduction to the world of flight simulators employed as research platforms and not exclusively as training tools. The main simulator levels, recognized by the EASA, European Union Aviation Safety Agency, will be firstly described focusing on FFS (Full Flight Simulator). Then, the main research contexts, taking advantage of flight simulators, will be presented with some referenced research activities. This will be followed by the description of research topics concerning the human factor and comfort in the simulated environments of cockpit and cabin.

Firstly, the objective and subjective techniques used to evaluate the aeronautical human factor will be described. Next, the main subjective tests for real-time and post-tasks are given, evaluating the main advantages and drawbacks. Then, objective measurement based on existing technologies will be introduced, particularly sensors exploitable inside the aircraft. Also, for these techniques, the main advantages and drawbacks will be shown. Finally, a brief overview of the mathematical correlation tools that can relate the two types of measurement data will be presented with reference to some experimental study cases.

In the second part of the course, the research topic of aviation comfort will be introduced. First, the human body’s biodynamic modelling techniques will be described with an overview of the models employed in the aeronautical framework, followed by experimental results. Finally, the analytical and numerical modelling will be shown with examples of evaluation on the human body’s comfort indexes with aeronautical manufacturers’ restrictions.

Learning objectives: Simulator classification, standards, and experimental research activities; Human Factors in cockpit and cabin environment; Human Body Comfort for pilot and passenger.

Target audience: doctoral students, non-academic professionals, and undergraduate students.

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    Introduction to the design of LEO nanosatellite orbits for local coverage

    Introduction to the design of LEO nanosatellite orbits for local coverage

    16, 18 NOVEMBER 2021

    This webinar introduces the design of orbits for Low Earth Orbit (LEO) nanosatellites and nanosatellite’s constellations to maximise local transmission or coverage capacity with a limited number of satellites. It will describe the main drivers in determining orbital evolution in Low Earth Orbit considering the perturbed two-body problem of Keplerian orbital dynamic and deriving the expression for repeated ground track and revisit time considering different coverage or visibility conditions with multiple ground stations. Finally, the webinar will present the application of orbit analysis investigations to maximise the visibility of single satellites from multiple ground stations and optimise local coverage patterns using special architectures for regional constellation design (Walker and flower constellations) aimed at continuous optical and SAR monitoring of large infrastructures.

    Learning objectives:

    • Classical and perturbed two-body orbital flight dynamics;
    • Repeated ground track orbits and revisits time calculation;
    • Regional constellation design.

    Target audience: doctoral students interested in Earth orbit nanosat constellations design, engineers who aspire to a deeper understanding of applied orbital dynamics, technical or non-technical professionals new to the space industry who need an introduction to the problem of orbital design in LEO.

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    Planetary Probes Entry and Descent Science

    Planetary Probes Entry and Descent Science

    8-9 NOVEMBER 2021

    Deliver robotic platforms and, in the next future, human missions on a planetary body with an atmosphere is a significant technological challenge. Onboard data acquired during Entry Descent and Landing (EDL) mission phases are typically used to verify the engineering system performances. Nevertheless, such data carry out much information of great scientific value. This webinar introduces the post-flight analysis of EDL mission data with a particular focus on the reconstruction of atmospheric profiles building upon the experience with past missions such as Huygens end ExoMars-2016 and presenting real-world case studies.

    Topics:

    • Introduction to entry, descent and landing technologies with related onboard instrumentation. Overview of past and future planetary exploration missions.
    • Basic aerodynamics of aeroshells and parachute systems, guidance, navigation and control issues.
    • Entry and descent phase modelling and simulation. Case study: ExoMars-2022 entry and descent simulation.
    • Methods and algorithms for the reconstruction of trajectory and atmospheric profiles from onboard data. Bayesian techniques for data assimilation. Case study: ExoMars-2016 Schiaparelli data analysis.

    Learning objectives:

    • Understand EDL challenges and current technologies.
    • Understand aeroshell and parachute aerodynamic, dynamical modelling and entry and descent phases simulation issues.
    • Implement methods and algorithms to reconstruct both the vehicle trajectory and the atmospheric structure from inertial data.
    • Application of Bayesian techniques for data assimilation and multi-sensor fusion.

    Target audience: doctoral students, non-academic professionals, and undergraduate students.

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    Innovative propulsion system in service of small satellites

    Innovative propulsion system in service of small satellites

    4 NOVEMBER 2021

    Small satellites are the new dominant platforms in the new space economy. Thanks to the very high capabilities of the electronic systems, small satellite, especially if working within the frame of a constellation, can provide innovative services with a cost not achievable from big satellites. However, to fully exploit their huge potential such a platform has specific need both in term of access to orbit and movement in space.

    Regarding orbit access, most of the platforms fly as piggy bag on big launcher. This mean that they cannot choose the right orbit and they must fly within a schedule which is not based on their need. Around the world several companies are developing micro launchers to provide a dedicated access to space to small platforms. Micro launchers require the development of innovative propulsion systems capable to combine high performances with reasonable costs.

    Once in orbit micro satellites need to reach the right altitude, the right phasing within the orbit and to maintain its position. To do it they do require an onboard propulsion system. These thrusters need to be designed to respect the reduced size of such a platform and to allow low recurring costs. Moreover, innovative missions, such as for example very low earth orbit (VLEO) require dedicated thruster to accomplish the specific mission, in VLEO for example a thruster capable of performing continuous drag compensation is required. These new scenarios open new challenges and opportunities for new innovative technology capable of reaching the right compromise between costs and performances.

    Object of this webinar is to provide an overview of the ongoing market scenario related to small platforms than to provide an overview of the most innovative micro launchers developed or currently under development, and finally to provide an overview of the most promising propulsion systems suitable for small satellites developed or currently under development.

    Learning objectives: market scenario, micro launchers, small thrusters.

    Target audience: doctoral students, non-academic professionals, and undergraduate students.

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    There are no registration fees for AIDAA members. In case you are not an AIDAA member, please register here.

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      Sound transmission control through optimized composite sandwich lattice panels

      Sound transmission control through optimized composite sandwich lattice panels

      8-15-22-29 OCTOBER 2021

      This webinar provides an overview of recent developments in sound transmission control through aeronautical panel structures. In the first part, general definitions of the sound transmission efficiency parameters are given; moreover, the classical and advanced structural models used to analyze sandwich structures are depicted. In the second part of the webinar, the attention is focused on recent industrial interests such as 3d-printed lattice materials used for the design of sandwich cores, the homogenization of the lattice material properties is introduced. Furthermore, the passive damping of the multilayered panels can be improved by using soft viscoelastic materials; therefore, their modelling with classical Kelvin-Voigt or fractional derivatives models is explained. In the last part of the webinar, the structural optimization problem is introduced; the original contributions of the authors define a new particle swarm optimization model called the Population Decline Swarm Optimization method. Finally, some case studies concerning the sound transmission control through optimized multilayered shell composite sandwich panels with lattice core embedding viscoelastic sheets are discussed.

      Learning objectives:

      • Structural models for composite sandwich panels
      • Properties evaluation of lattice materials
      • Sound transmission optimization of aeronautical panels

      Target audience: doctoral students, non-academic professionals, and undergraduate students.

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      Global-local analysis techniques for metallic and composite structures

      Global-local analysis techniques for metallic and composite structures

      14-17 SEPTEMBER 2021

      The course aims to introduce the global-local analysis of metallic and composite structures. Advanced materials, such as composite and smart materials, are commonly used in aerospace applications. These materials can lead to local singularities that require refined models to be investigated. The course will introduce the main approaches used to increase the model fidelity locally. At first, typical global-local problems are presented and discussed. Then, a detailed overview of the main techniques proposed in academia and by commercial codes are presented. Finally, an advanced global-local approach based on variable kinematic models is introduced. Applications and numerical test cases are used to present each approach.

      Learning objectives:

      • Use of higher-order models for composites and metallic structures
      • Pro/Cons of the global/local techniques
      • Global/local techniques using commercial software
      • Recent developments in the global/local method

      Target audience: doctoral students, non-academic professionals, and undergraduate students.

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      Structural Dynamics: Theory and Practice in the Space Industry

      Structural Dynamics: Theory and Practice in the Space Industry

      29/30 JUNE 2021

      The aim of the webinar is to provide a synthesis and an overview of the status of the art in some areas of structural dynamics as applied in the Space Industry. The webinar is proposed by a small group of internationally recognized experts from Academia and Industry. Many topics will be investigated, as the fundamental differences between the dynamics of linear and nonlinear systems, concrete academic and industrial applications and an overview of the past effort for the development of methods and procedures for finite element model updating and validation of dynamically loaded structures.

      Target audience: doctoral students, non-academic professionals, and undergraduate students.

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      An overview on space debris protection best practice

      An overview on space debris protection best practice

      15/16 JUNE 2021

      Space debris represent a real threat to the Earth orbit access and utilization. In the development and management of a space mission, it is important to focus on evaluating impact risk, the protection of spacecraft from debris impact, and the modelling of impact-induced fragmentation.
      This webinar will focus on the current status and the most promising advancements in this field, introducing the best practices suggested by the scientific community and focusing on specific case studies. Attendees will learn about recent advances in catastrophic fragmentation modelling due to hypervelocity impact, impact risk assessment, spacecraft protection.

      Target audience: doctoral students, non-academic professionals, and undergraduate students.

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      Composite materials: Modeling, Processing, and Characterization

      Composite materials: Modeling, Processing, and Characterization

      8-11 JUNE 2021

      The global composite material and structure market is a multibillion sector with continuous growth, with the aerospace, automotive, construction, marine, and wind energy industries being the big players. The drivers of the expansion are the demand for high-performance and lightweight composites due to stringent regulations towards, e.g., less polluting vehicles or save weight. Emission targets are leading to develop lighter-weight, affordable composite structures and components at higher volumes. Conversely, the reduction of manufacturing costs and the increase in processing efficiency represent some of the next decade’s challenges.

      The design of composites cannot use extensions of the methodologies adopted for metals. Such a strategy may lead to oversizing, let alone the risks arising from a wrong design. Composites are more complex material systems than metals due to their multiscale nature. Brittle orthotropic fibers, ductile isotropic matrices, and soft cores coexist.  Such complexity leads to challenging predictive models. E.g., composite structures’ damage and failure mechanism is still far from reliable predictions via virtual models and needs high computational costs, precluding structural engineering calculations. Uncertainties in the models lead to safety factors and tests. Therefore, currently, the full spectrum of composites’ advantages is not exploitable, and costly experimental tests are necessary.

      Other challenges may arise during the manufacturing process; in fact, composite parts are commonly subjected to high pressure and temperature cycles during which thermal/curing-induced free-strains are formed. Mismatch of these free strains at various scales, coupled with mechanical properties’ evolution, leads to residual stresses and, consequently, dimensional changes in the cured composite part. The mismatch occurs at the micro-level between constituents (i.e., fiber and matrix), at the meso-level between plies with different orientations, and at the macro-level between the part and the tool via friction and other geometrical constraints. These manufacturing-induced dimensional changes may reduce mechanical performance and pose significant challenges during the assembling of large and complex parts.

      Target audience: doctoral students, non-academic professionals, and undergraduate students.

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      Aircraft Impact Dynamics

      Aircraft Impact Dynamics

      25 MAY 2021 16.30-18.30 CEST and 28 MAY 2021 10.30-13.00 CEST

      The webinar provides an overview of recent developments in a specialized research area on aircraftimpact dynamics.
      The original contributions from the authors define the state of the art in the chosen thematic area byfocusing attention on cases of industrial interest addressed to development programmes.
      They give an overview of the definition of both of the field of applicability and of how the research hasproduced innovations and improvements. Improvements concern certainly materials and structures, butthey also include the ways of energy absorbing involving a greater part of the structure during theimpact.
      This webinar is addressed to PhD students, experienced researchers, regulatory agencies and industryspecialists. It discusses the latest aerospace crashworthiness regulations, certification by analysismethods for aircraft, bird strike, metallic & composite structures, impact dynamics up to computationaland experimental techniques. Finally, two case studies about the aircraft seat structures and an aircraftaccident will be discussed.
      Target audience: doctoral students, non-academic professionals, and undergraduate students.

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