Presence and coupling of rigid-body dynamics and exible modes is a challenge for the FCS (Flight Control Systems) design of a large BWB (Blended-Wing-Body) aircraft.We present two approaches for a BWB's lateral FCS. First, a more classical approach is employed giving rise to separate ight dynamics controller (H2 optimal, with sucient roll-off) and an active damper for most prominent lateral exible modes on top of that (mixed-sensitivity Hinfinite design). This approach proves successful and has obvious advantages related to the design process complexity, or implementation and testing issues. On the other hand, there is always a risk of potentially signicant performance loss compared to a fully integrated design. For this reason, fully integrated design is also presented in the form of a mixed-order multi-input, multi-output Hinfinite optimal FCS controller, obtained by means of direct non-convex non-smooth optimization package HIFOO. Performance of both approaches is assessed.
Lateral control for exible BWB high-capacity passenger aircraft
2011
5 Seiten, 13 Bilder, 13 Quellen
Conference paper
Storage medium
English
Lateral control for flexible BWB high-capacity passenger aircraft
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