Aerodynamic Analysis of Aftbodies for Future Fighter Configurations

5 Dezember 2019

Many multidisciplinary requirements and constraints are posed on the design of future fighter aftbodies and the corresponding nozzle integration. The engine configuration, nozzle shape, and the consideration of thrust-vectoring are only a few of a variety of major aspects, which need to be considered in the preliminary design process of future fighter configurations. The objectives of this thesis are to obtain a holistic view on the topic and gather relevant sensitivities for the design of future fighter aftbody configurations.

Proposed Activities:
- Literature review of the aerodynamic behavior of aftbodies and nozzle integration
- Generation of one or more (potentially parametric) CATIA models enabling a fast and efficient study of nozzle configurations
- Setup of a computational framework including evaluations of the effect of the computational mesh and the numerical setup (e.g. turbulence model)
- Computational Fluid Dynamics (CFD) investigations to understand the influences of
                 o nozzle shape (circular, rectangular, or other)
                 o nozzle opening angle (“boat tail angle”)
                 o nozzle position and distance
                 o displacement body arrangement
                 o thrust-vectoring provisions
   on the overall aircraft drag and nozzle efficiency /nozzle losses.
- Documentation of the investigated influences and resulting design guidelines

- Course of study Aerospace Engineering, Aeronautical Engineering, or comparable
- Sound basic knowledge of CATIA shape design is mandatory
- Experience in Computational Fluid Dynamics (CFD)
- Knowledge of at least one programming language (e.g. Python)
- Strong interest in aerodynamic design and fighter aircraft