Abstract
Preliminary aircraft design and cabin design are essential and well-established steps within the product development cycle for modern passenger aircraft. In practice, the execution usually takes place sequentially, with the preliminary design defining a basic cabin layout and the detail implementation following in a subsequent step. To enable higher fidelity assessment of the cabin early in the design process—for example by means of virtual reality applications—this paper proposes an interface, which can derive detailed 3D geometry of the fuselage from preliminary design data provided in the Common Parametric Aircraft Configuration Schema (CPACS). This is a key step towards integration of cabin analysis and preliminary design in automated collaborative aircraft design chains, not only in terms of passenger comfort, but also manufacturability or crash safety. Like the TiGL Geometry Library for CPACS, the interface presented acts as a parameter engine, which translates data from CPACS into CAD geometry using the Open Cascade Technology library. However, the scope of TiGL is expanded significantly, albeit with an explicit focus on the fuselage, by including more details such as extruded frame and stringer profiles and floor structures. Furthermore, advanced knowledge management techniques are employed to detect and augment missing data. For virtual reality applications, triangulated representations of the CAD geometry can be provided in established exchange formats, creating an interface to common visualization platforms. Additionally, a new evolution of the cabin definition schema in CPACS is presented, to incorporate models of cabin components such as seats or sidewall panels enabling immersive virtual mock-ups.
Highlights
Cabin design is inherently an essential aspect of the development of passenger aircraft
This paper describes an approach linking preliminary aircraft design, structure and cabin layout generation and geometry modeling using the Common Parametric Aircraft configuration Schema (CPACS) [3] to provide a mock-up of the fuselage and cabin automatically while maintaining consistency among different disciplines
An automated approach for deriving detailed and consistent cabin designs, and virtual reality (VR)-compatible 3D models thereof, from preliminary design data provided in the Common Parametric Aircraft Configuration Schema (CPACS) format has been demonstrated
Summary
Cabin design is inherently an essential aspect of the development of passenger aircraft. The possibility to automatically and dynamically add necessary information based on the available data at a given stage of an interdisciplinary process is a distinguishing factor to similar solutions for cabin design and virtualization found in industry and research such as the commercial tool Pacelab ACE myCabin [5] or the open source CabLab [6], which are monolithic applications operated through a graphical user interface Establishing these digital capabilities is a key contribution towards the vision of the digital thread, advocated by the German Federal Government, the Helmholtz Association and the German Aerospace Center (DLR) [7,8,9], to improve digital permeation and interconnection throughout the aerospace industry, reducing lead times and entrepreneurial risks for new, greener aircraft designs.
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