WP2: Understanding the Non-linearities of Gust Interaction

Top level technological objectives

  • To investigate aerodynamic non-linearities due to aircraft-gust interaction and to compare the computational capability of different approaches to capture this non-linearity
  • To investigate the classical gust definitions and the development of new models incorporating compressibility effects
  • To investigate the impact of structural non-linearities on aircraft-gust interaction
  • To investigate the interaction of aerodynamic and structural non-linearities in aircraft-gust interactions
  • To produce data sets to allow comparison with reduced order models developed within other work packages.

Description of work

Non-linearity is a feature of responses to gust particularly for highly flexible and innovative structures. This means that the current industrial loads processes reliance on linearity may make these methods unsuitable for future aircraft. Whilst coupled CFD-FEM simulations could bring non-linearity to the gust loads process, they would be prohibitively expensive and instead computationally cheaper surrogate models will be needed.

In order to develop a new class of reliable reduced order models that include the important non-linearities found in CFD-FEM simulations, a greater understanding of the non-linearities due to the interaction of gusts and aircraft is needed. This work package will gain understanding of the non-linearity by performing high-fidelity simulations of gusts.