Towards CFD Based Aeroservoelastic Flight Vehicle Shape Optimization - New Capabilities and New Results with ZEUS-DO

Abstract

The paper presents new developments in the capabilities of design-oriented (DO) Euler / boundary layer unsteady aerodynamic simulations to allow the accounting for static and dynamic aeroelastic constraints in the multidisciplinary shape optimization of flight vehicles. Adding to pressure distribution and generalized aerodynamic force shape derivatives as well as shape sensitivities of flutter speeds for configurations made of lifting surfaces, the new additions described in the present paper include extensions of the shape sensitivity capability to (a) configurations made of lifting surfaces and bodies, (b) linking of shape design variables to allow shape optimization of complex configurations driven by a small set of shape design variables, (c) shape sensitivity of aeroelastic static trim solutions and (d) shape sensitivities of time response to dynamic excitations. The paper also describes a designoriented implementation of a linearized Euler solver, offering computational advantages over the original approach to frequency domain generalized aerodynamic forces, which was based on system identification from CFD response time histories. Background and Motivation

An airplane jig shape design method based on high fidelity aeroelastic simulation

“…By using a high-aspect-ratio wing as an example, the jig shape design process was demonstrated. Chen et al [22] presented new developments in the capabilities of design-oriented (DO) Euler/boundary layer unsteady aerodynamic simulations to allow the accounting for static and dynamic aeroelastic constraints in the multidisciplinary shape optimization of flight vehicles based on ZUES software.…”