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CPACS - Common Parametric Aircraft Configuration Schema. Daniel Böhnke Air Transportation Systems German Aerospace Center, (DLR). Integrated Aircraft Design. Requirements, Targets. Distributed system Tools of specialists are wrapped Coupling via central data model CPACS. Analysis 1.
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CPACS-Common Parametric Aircraft Configuration Schema Daniel Böhnke Air Transportation Systems German Aerospace Center, (DLR)
Integrated Aircraft Design Requirements, Targets • Distributed system • Tools of specialists are wrapped • Coupling via central data model CPACS Analysis 1 Parameterization Optimization Analysis 1 Database CPACS Database Iteration Meta-Modeling Analysis 2 Analysis 2 Analysis n Analysis n Performance, Properties Sensitivities software.dlr.de
Lifting Line Panel code Euler Central Model Architecture Functional Parametrization CPACS Different models with different geometric representations can be derived from the global CPACS model using the software libraries. software.dlr.de
Reduce No. of interfaces Standardize Product and process information Human readable Common Namespace ►n(n-1) ►2n software.dlr.de
Holism Exchange relevant information • Intersections of disciplines Exchange relevant meta-information • Dynamic or static ? from: Dream Airplanes, C.W. Miller software.dlr.de
Accessibility • Information is always converted • Interaction of discipline and modeling experts • One of the key factors! from: Dream Airplanes, C.W. Miller software.dlr.de
Automatic model generation Reduce erroneous Generation of derivatives {…} Design Loop Re-usability from: Dream Airplanes, C.W. Miller software.dlr.de
Abstraction Methods Generalization Classification Association • Distinguish between content and metamodel • Partial-hierarchical models • Complex mechanisms hamper comprehension software.dlr.de
Common Parametric Aircraft Configuration Schema • MDO aircraft design • Distributed simulation • Collaborative development software.dlr.de
CPACS • DLR intern standard • based on XML / XSD • development in ~2005 • specific libraries • Applications in DLR Projects: • Aircraft design • Helicopter design • Engine design • Climate impact software.dlr.de
TIXI – XML Interface • Handle CPACS • Basic XML functions • Advanced CPACS functions • Arrays • Unique Identifiers • … software.dlr.de
TIGL – Geometry Library • Visualization • Calculation • Area • Intersections • Inner <> Outer • Export • STL • IGES software.dlr.de
RCE - Remote Computing Environment • Framework • Integrated Capabilities • Distributed software.dlr.de
References • T. Zill, D. Böhnke, B. Nagel, V. Gollnick, Preliminary Aircraft Design in a Collaborative Multidisciplinary Design Environment, AIAA Aviation Technology, Integration and Operations Conference, 2011 • D. Böhnke, B. Nagel, V. Gollnick, An Approach to Multi-Fidelity in Conceptual Aircraft Design in Distributed Design Environments, IEEE Aerospace Conference, 2011 • D. Böhnke, M. Litz, B. Nagel, S. Rudolph, Evaluation of Modeling Languages for Preliminary Airplane Design in Multidisciplinary Design Environments, DGLR Congress, 2010 • C. Liersch, M. Hepperle, A Unified Approach for Multidisciplinary Aircraft Design, CEAS European Air and Space Conference, 2009 • A. Koch, B. Nagel, V. Gollnick, K. Dahlmann, V. Grewe, B. Kärcher, U. Schumann, Integrated analysis and design environment for a climate compatible air transport system, AIAA Aviation Technology, Integration and Operations Conference, 2009 software.dlr.de
„All models are wrong, but some are useful.“ George E.P. Box software.dlr.de
Collaborating DLR Institutes AE Aeroelasticity www.dlr.de/ae/en AS Aerodynamics and Flow Technology www.dlr.de/as/en AT Propulsion Technology www.dlr.de/at/en BK Structures and Design www.dlr.de/bk/en FA Composite Structures and Adaptive Systems www.dlr.de/fa/en FL Flight Guidance www.dlr.de/fl/en FT Flight Systems www.dlr.de/ft/en FW Air Transport and Airport Research www.dlr.de/fw/en HR Microwaves and Radar www.dlr.de/hr/en LY Air Transportation Systems www.dlr.de/ly/en ME Aerospace Medicine www.dlr.de/me/en MF Remote Sensing Technology www.dlr.de/caf/en PA Atmospheric Physics www.dlr.de/pa/en RM Robotics and Mechatronics www.dlr.de/rm/en RY Space Systems www.dlr.de/irs/en SC Simulation and Software Technology www.dlr.de/sc/en software.dlr.de
