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Advanced Modeling of Air- and Rotorcraft in a Multi-Disciplinary Environment at Early Design Stages

Schwinn, Dominik (2015) Advanced Modeling of Air- and Rotorcraft in a Multi-Disciplinary Environment at Early Design Stages. In: Summary of Proceedings. NAFEMS World Congress 2015, 21.-24. Jun. 2015, San Diego, CA, USA. ISBN 978-1-910643-24-2

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Abstract

The development of new air- and rotorcraft is very challenging. The design process is divided into three consecutive phases: Conceptual, preliminary and detailed design phase which combine various disciplines featuring different objectives, e.g. static versus crashworthy design. This paper focuses on the preliminary design stage. The aim of the presented work is a significant reduction of the time spent on model generation in a multi-disciplinary design environment. Moreover, automation is desired to couple different disciplines respectively tools, hence, reducing the error probability compared to manual processing. In the preliminary design phase a basic aircraft configuration which has been developed during the conceptual design serves to conduct trade studies. Objective of this stage is to enhance this basic aircraft configuration establishing an appropriate design that meets customer requirements including performance, weight, producibility and cost. This phase is of particular interest since the basic layout of the primary structure is defined here. Up to date, semi-analytical methods are commonly deployed during preliminary design. Though these methods lead to adequate results for major structural components, the evaluation of new aircraft configurations is still very challenging. One philosophy to improve preliminary design is to introduce the use of Finite Element Methods (FEM) at this early design stage benefitting from the constantly increasing computational power. To efficiently use FEM, fast and easy model generation methods are required. These methods also need to have the ability to cope with the generation of alternative design concepts (e.g. blended wing body, compound helicopter). In order to accelerate and simplify these modeling processes, the standardized data format CPACS (Common Parameterized Aircraft Configuration Schema) is used in combination with automated modeling tools. In this paper fully parameterized and automated process chains for the generation and analyses of air- and rotorcraft fuselage structures will be presented. The tools used within these processes will be introduced and basic applications will be shown to demonstrate the versatility, effectivity and the gain in efficiency. Applications range from initial distribution of primary structure over static analysis to evaluation of crashworthiness.

Item URL in elib:https://elib.dlr.de/97158/
Document Type:Conference or Workshop Item (Speech)
Title:Advanced Modeling of Air- and Rotorcraft in a Multi-Disciplinary Environment at Early Design Stages
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwinn, Dominikdominik.schwinn (at) dlr.dehttps://orcid.org/0000-0003-2341-9632
Date:June 2015
Journal or Publication Title:Summary of Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
ISBN:978-1-910643-24-2
Status:Published
Keywords:aircraft design, parameterized modeling, fuselage design, crashworthiness
Event Title:NAFEMS World Congress 2015
Event Location:San Diego, CA, USA
Event Type:international Conference
Event Dates:21.-24. Jun. 2015
Organizer:NAFEMS Ltd.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Stuttgart
Institutes and Institutions:Institute of Structures and Design > Structural Integrity
Deposited By: Schwinn, Dominik
Deposited On:19 Nov 2015 10:12
Last Modified:31 Jul 2019 19:53

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