A software tool for generic parameterized aircraft design

Sotirios S. Sarakinos

doi:10.1016/j.advengsoft.2006.06.001

2007-01-01

PRE

Sotirios S. Sarakinos

Ioannis M. Valakos

Ioannis K. Nikolos *

DOI：10.1016/j.advengsoft.2006.06.001

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摘要

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In this work a surface generation software named Ge.P.A.S. (for generic parameterized aircraft surface) is presented, designed for the construction of aircraft aerodynamic surfaces. The surface generation procedure is parameterized and different aircraft configurations can be produced in an interactive way. A hierarchical structure of geometric parameters was adopted, resulting in easier manipulation of the shape and a scalable number of control parameters. Additionally, the geometric parameters may serve as design optimization variables in cooperation with an external optimizer. The surface generation is based on the use of NURBS curves and surfaces, which provide the ability to produce complicated geometries with a relative small number of design variables. Standard or user-defined airfoil sections can be used for the wing generation. The surface description is compatible with international input/output standards; IGES and STEP formats are supported for the output files. Consequently, Ge.P.A.S. can serve as a preprocessor for other software packages, which may be used in order to refine the geometry or to generate the grid for numerical simulations. The geometric algorithms, the software features and its basic characteristics are presented in this paper, along with a demonstration of its abilities in sample aircraft configurations. (C) 2006 Elsevier Ltd. All rights reserved.

Keyword:

aircraft design

surface generation

NURBS surfaces