Dynamic stability of a manned VTOL aircraft

LILIUM AVIATION is a German start-up which develops, manufactures and distributes the world’s first all-electric vertical take-off and landing jet. The revolutionary efficient and patented distribution propulsion system allows ranges of 500 km at top speeds exceeding 350 km/h.

Modern aircrafts are substantially supported by highly redundant control systems. To increase the robustness of the underlying control models, extensive CFD simulations are performed in industrial applications. For dynamic stability analysis, current CFD models are only limited and experimental evaluations are too expensive regarding the limited profit in accuracy.

This work aimed to provide a detailed workaround towards dynamic stability analysis with the commercial software tool STAR-CCM+®. Longitudinal and lateral dynamic stability derivatives were determined for short period flight mode by solving the whole set of Navier-Stokes equations with implicit unsteady solver in terms of dynamic domain transformation and accounting in mass effects.

The results obtained will be used to study the plane’s response to a perturbation such as a gust of wind or actuation of a control, for different flight configurations. 

Session Time Slot(s): 
06/03/2017 - 4:40pm-06/03/2017 - 5:05pm
Convention Hall 1D
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Lilium Aviation GmbH