High-Fidelity Multidisciplinary Maneuver Simulations of the Falcon 2000LX ISTAR

This paper presents high-fidelity multidisciplinary maneuver simulations of the DLR research aircraft Dassault Falcon 2000LX ISTAR. These simulations are computed using the multidisciplinary process chains FSAerOpt and UltraFLoads for the DLR research project HighFly (High-Speed Inflight Validation). The goal of this project is the validation of simulation models for virtual flight testing with data measured on the ISTAR aircraft. The paper describes the individual ISTAR models and analyses: CAD geometry, CFD (DLR TAU-Code), control surface deflection modeling, CSM (MLS Nastran), aircraft mass distribution, and engine. The paper gives also a short overview of some UltraFLoads simulation processes such as CFD-CSM coupling, trim analysis, and dynamic maneuver simulation. The results of steady-state trimmed CFD-CSM coupled simulations and unsteady open-loop free-flying elastic maneuver simulations (pull-up, push-down, bank-to-bank) in clean configuration are presented. The first comparisons of the numerical simulations with the experimental data are also shown.