Multi-Level MDO of a Long-Range Transport Aircraft Using a Distributed Analysis Framework

Görtz, Stefan; Ilić, Časlav; Jepsen, Jonas; Leitner, Martin; Schulze, Matthias; Schuster, Andreas; Scherer, Julian; Becker, Richard-Gregor; Zur, Sascha; Petsch, Michael

doi:10.2514/6.2017-4326

Cited by 19 publications

(17 citation statements)

References 6 publications

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“…8). The CAD interface uses the experience gained during the development of the geometry library TiGL [29], which is used for the geometry generation in the preliminary aircraft design at DLR [30][31][32]. This includes surface modeling such as section skinning or curve network interpolation, as well as the geometry export into common data formats.…”

Section: Cad Interfacementioning

confidence: 99%

Collaborative Aircraft Engine Preliminary Design using a Virtual Engine Platform, Part A: Architecture and Methodology

Reitenbach

Vieweg

Becker

et al. 2020

AIAA Scitech 2020 Forum

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Section: Cad Interfacementioning

confidence: 99%

Collaborative Aircraft Engine Preliminary Design using a Virtual Engine Platform, Part A: Architecture and Methodology

Reitenbach

Vieweg

Becker

et al. 2020

AIAA Scitech 2020 Forum

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“…With the help of TiGL, slight modifications of aircraft geometries can be created in an automated workflow. CPACS and TiGL are currently being developed and constantly extentended in research projects related to MDO [12][13][14]. Some ideas to increase the optimization capabilities in the future are…”

Section: Optimizationmentioning

confidence: 99%

TiGL: An Open Source Computational Geometry Library for Parametric Aircraft Design

et al. 2019

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This paper introduces the software TiGL: TiGL is an open source high-fidelity geometry modeler that is used in the conceptual and preliminary aircraft and helicopter design phase. It creates full three-dimensional models of aircraft from their parametric CPACS description. Due to its parametric nature, it is typically used for aircraft design analysis and optimization. First, we present the use-case and architecture of TiGL. Then, we discuss it's geometry module, which is used to generate the B-spline based surfaces of the aircraft. The backbone of TiGL is its surface generator for curve network interpolation, based on Gordon surfaces. One major part of this paper explains the mathematical foundation of Gordon surfaces on B-splines and how we achieve the required curve network compatibility. Finally, TiGL's aircraft component module is introduced, which is used to create the external and internal parts of aircraft, such as wings, flaps, fuselages, engines or structural elements.Mathematics Subject Classification (2010). 65D17, 65D05, 65D10.

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“…Up to that point, RCE was applied mostly to assemble processes with lower-fidelity tools, such as in conceptual aircraft or spacecraft design. Moreover, the projected MDO process in Digital-X was to be a multi-level one, comprising tools and sub-processes ranging from lowfidelity, over mid-fidelity, to high-fidelity and computation-intensive [27,28,29]. It involved disciplinary expert groups from eight DLR institutes, each committed to integrating their tools and sub-process into the overall MDO process.…”

Section: Fig 8 Overview Of Parameter Variations Performed For the Smentioning

confidence: 99%

“…The outer optimizer was the derivative-free Subplex method. More details on the setup of the MDO process, the disciplinary models and the optimization results can be found in [28,29]. Given the long effective run time of a single design analysis of about 56 hours, at the conclusion of the project the optimization was not yet fully converged.…”

Section: Fig 12 Rce Implementation Of the Digital-x Mdo Processmentioning

confidence: 99%

Distributed Multidisciplinary Optimization and Collaborative Process Development Using RCE

Boden

Flink

Mischke

et al. 2019

AIAA Aviation 2019 Forum

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DLR's Remote Component Environment (RCE) is an open-source software environment for defining and executing workflows containing distributed simulation tools by integrating them into a peer-to-peer network. It is being developed primarily by DLR and has been used in various engineering projects, including several aerospace projects dealing with multidisciplinary optimization (MDO) and multidisciplinary analysis (MDA). RCE has several advantages that can help to achieve more reusable multidisciplinary processes. The workflow is composed of built-in and user-defined components. Disciplinary tools are integrated as standalone components, with defined inputs and outputs, and then distributed over the network. While executing the workflow, data dependencies between the components are automatically detected, and a component is executed as soon as all its input data is available. Thus, multiple components can run at the same time. The components of a multidisciplinary process can also be executed in a distributed manner, where the tools are located on different machines with possibly different operating systems. Once configured, the peer-to-peer network is automatically established between the RCE instances running on different machines, making components visible and executable even between instances that are only connected indirectly. The distributed execution capability alleviates tool deployment issues, including those related to the protection of intellectual property. RCE supplies a graphical editor for creation of workflows, using the built-in components to control the data flow. Some built-in components can be used to perform optimization tasks within the workflow, including nested loops, using built-in or user integrated optimization algorithms. We demonstrate the use of some of the key features of RCE for MDA and MDO purposes based on several collaborative DLR projects where distributed simulation tools are being used.

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Multi-Level MDO of a Long-Range Transport Aircraft Using a Distributed Analysis Framework

Cited by 19 publications

References 6 publications

Collaborative Aircraft Engine Preliminary Design using a Virtual Engine Platform, Part A: Architecture and Methodology

Collaborative Aircraft Engine Preliminary Design using a Virtual Engine Platform, Part A: Architecture and Methodology

TiGL: An Open Source Computational Geometry Library for Parametric Aircraft Design

Distributed Multidisciplinary Optimization and Collaborative Process Development Using RCE

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