Articles from Dassault Systemes (#165)

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Co-authored-by: Imke Krueger <[email protected]>

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+NewsletterTemplate.md

_2020-03/ASL_ModelicaNewsletter.md

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+---
+title: Aviation Systems Library
+author: "Maximilian Kormann ([Dassault Systèmes Deutschland GmbH](https://www.3ds.com/))"
+category: "library"
+---
+
+The new Aviation Systems Library (ASL) offers models for the aerodynamic behavior of aircrafts like airplanes or multi-copters. It uses standard MSL physical connectors to allow the design of propulsion systems with other libraries like the Electrical Powertrains Library (EPTL) considering the effects of the flight mission on the performance. Being fully integrated into the MSL MultiBody environment, all potential of Modelica libraries can be utilized.
+In this first release, two main topics are covered:
+ - Longitudinal dynamics of airplanes (fixed-wing) for designing a propulsion system considering the flight mission
+ - Full dynamics of multi-copter drones (rotating-wing) including the control system for mission planning and design of the propulsion system
+The two areas share common models like propulsion or landing gear systems.  Components of the electric drive are structured in a reasonable way to allow replacing by custom drive systems from other libraries:
+
+![Propulsion System](propulsion.png "Propulsion System"){:width="623px"}
+
+The aerodynamic forces of wings or propeller blades are calculated by table-based profile polar curves. Geometrical arrangement of the aerodynamic objects to model an aircraft is conducted in the Modelica MultiBody environment. A simple tire model allows take-off from ground and landing:
+
+![Aircraft](aircraft.png "Aircraft"){:width="623px"}

_2020-03/DS_SystemsSimulationDesigner.md

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+
+---
+title: 3DExperience Systems Simulation Designer
+author: "Alexandre Cortina ([Dassault Systemes](https://my.3dexperience.3ds.com/welcome/))"
+category: "vendor"
+---
+
+Systems Simulation Designer is a new web based tool available now on the DASSAULT SYSTEMES Cloud.
+
+
+![3DExperience Systems Simulation Designer](DS_SystemSimulationDesigner.png){:width="623px"}
+
+The goal of this new tool is to allow domain experts to create multi-physics simulation models using Modelica libraries and share ready-to-use experiments in the overall company for systems assessment and tradeoff analysis:
+* Fast deployment without software installation accessible from a web browser
+* Compose a model based on existing libraries
+* Modelica modeling flexibility, including changes to structural parameters and redeclaration of models and components
+* Setup all the pre and post processing to simplify the models for other users. For example, defining parameter ranges, creating a list of important parameters for a dedicated model, defining important plots
+* Create a simulation cockpit or simulation dashboard, which is a simplified view of the simulation with parameters, animation and results available in a single page
+* Provide fast model execution  using the DASSAULT SYSTEMES cloud computing
+* Distribute knowledge of simulation based on Modelica
+

_2020-03/Dymola2021X.md

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+
+---
+title: Dymola 2021x
+author: "Dag Brück ([Dassault Systemes](http://www.3ds.com/dymola))"
+category: "vendor"
+---
+
+We are delighted to announce that Dymola 2021x is available. [Find presentation and release notes here](https://www.3ds.com/products-services/catia/products/dymola/latest-release/)
+
+#### Editing and user interface
+
+Importing FMU code modules is common. It is now possible to precisely control which FMU signals should be exposed or hidden, making the interface easier to use. When drawing diagrams, connections can be automatically routed to avoid existing components. On popular request, Dymola can be run in “dark” mode for a new experience.
+
+![Dymola in dark mode](Dymola2021x-darkmode.png)
+
+#### Simulation
+
+Static simulation (initialization) has become up 2x faster for many common types of models. To help understand the model’s behavior, equation systems can be visualized with an incidence graph.
+
+#### Model libraries
+
+The Modelica Standard Library 4.0.0 is the default in Dymola 2021x. Automatic conversion scripts are applied when opening models that used MSL 3.2.3.
+The new Aviation Systems Library models propulsion and aerodynamics of fixed-wing and rotary-wing aircraft.