Parametric design of aircraft configuration using API in CATIA;

Two key issues concerned in this paper are as follows: (1) geometric description of the joined-wing aircraft configurations with a relatively small number of parameters; (2) development of a code to generate the input file of MGAERO based on these geometric parameters.

How to implement the digital technique on the old analogue based aircraft and develop a set of aircraft contour generation mathematical models coving the aircraft contour data used in the present production is a issue requiring for an urgent solution.

A feature-based model reconstruction strategy of aircraft contours and structural parts is discussed systematically in this article,and the definition of infrastructural surfaces and solid features is given.

A novel approach is studied to fit smooth B-spline patch surfaces by giving an example of the bi-cubic B-spline surface reconstruction for the triangular mesh of the airplane configuration parts.

There are some conflicts between the enhancement of precision in the master dimensions surface model and the lofting shape drawing definition methods, existing in the lofting shape digital definition of certain airplane.

In this paper, artificial neural networks (ANNs) are applied to the intelligent CAD of aircraft preliminary configuration designs.