Extended physics-based wing mass estimation in early design stages applying automated model generation

Abstract

This article introduces a tool chain for extended physics-based wing mass estimation. Compared to state-of-the-art tool chains, the physics-based structural modelling is extended beyond the wing primary structure. The structural model also includes the movable trailing edge devices including tracks, the spoilers, the engine pylons and the landing gear. The chain consists of the structural analysis model, models for aerodynamic, fuel, landing gear and engine loads as well as a sizing algorithm. To make the complexity of the model generation process feasible for preliminary aircraft design, a knowledge-based approach is chosen. This means that the analysis models are created partly automatically, which leads to a minimum set of required input parameters for the central model generator. The DLR aircraft parametrisation format Common Parametric Aircraft Configuration Scheme is used as central data model for input and output. Therefore, the chain can be easily included in a wider multidisciplinary aircraft design environment.