Robust post-stall perching with a simple fixed-wing glider using LQR-Trees

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Robust post-stall perching with a simple fixed-wing glider using LQR-Trees.

Birds routinely execute post-stall maneuvers with a speed and precision far beyond the capabilities of our best aircraft control systems. One remarkable example is a bird exploiting post-stall pressure drag in order to rapidly decelerate to land on a perch. Stall is typically associated with a loss of control authority, and it is tempting to attribute this agility of birds to the intricate morp...

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Small and micro UAVs have enabled a number of new mission capabilities, including navigating in and around buildings and performing perch-and-stare surveillance. However, one of the primary limitations of these small vehicles is endurance, simply because they cannot carry sufficient power for long missions. Recent advances in fixed-wing perching have made it possible to consider a new solution ...

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High-precision maneuvers at high angles-of-attack are not properly addressed by even the most advanced aircraft control systems. Here we present our control design procedure and indoor experimental results with a small fixed-wing autonomous glider which is capable of executing an aggressive high angle-of-attack maneuver in order to land on a perch. We first acquire a surprisingly accurate aircr...

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Human pilots have the extraordinary ability to remotely maneuver small Unmanned Aerial Vehicles (UAVs) far outside the flight envelope of conventional autopilots. Given the tremendous thrustto-weight ratio available on these small machines [1, 2], linear control approaches have recently produced impressive demonstrations that come close to matching this agility for a certain class of aerobatic ...

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Birds have the impressive ability to gracefully ‘swim’ through the air while executing aerobatic maneuvers that routinely defy modern aeronautical and control engineering, consistently reminding us that the skies are truly their playground. Many of these animals are masters at exploiting post-stall pressure drag to execute maneuvers with unprecedented speed and precision, with nowhere near the ...

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ژورنال

عنوان ژورنال: Bioinspiration & Biomimetics

سال: 2014

ISSN: 1748-3182,1748-3190

DOI: 10.1088/1748-3182/9/2/025013