Computer-aided optimization of aircraft structures

This paper describes the principal methods used within the computer program STARS for the computer-aided design of optimum structures subject to a variety of constraints. In particular, the development of a Newton method for size optimization and a hierarchical approach to shape optimization are outlined. A test problem connected with the latter is presented. Practical examples ere given that show how research that originated at the Royal Aerospace Establishment (RAE) has been continued and applied at Deutsche Airbus GmbH (DA) [formerly MesserschmittBolkow-Blohm GmbH (MSB)]. This includes the design of various components that are typical in aircraft construction and also a description of the manner in which flutter optimization is being accomplished with STARS and DA in combination with the in-house aeroelastic program.