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research article

Crash-perching on vertical poles with a hugging-wing robot

Askari, Mohammad  
•
Benciolini, Michele
•
Phan, Hoang Vu  
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July 12, 2024
Communications Engineering

Perching with winged Unmanned Aerial Vehicles has often been solved by means of complex control or intricate appendages. Here, we present a method that relies on passive wing morphing for crash-landing on trees and other types of vertical poles. Inspired by the adaptability of animals’ and bats’ limbs in gripping and holding onto trees, we design dual-purpose wings that enable both aerial gliding and perching on poles. With an upturned nose design, the robot can passively reorient from horizontal flight to vertical upon a head-on crash with a pole, followed by hugging with its wings to perch. We characterize the performance of reorientation and perching in terms of impact speed and angle, pole material, and size. The robot robustly reorients at impact angles above 15° and speeds of 3 m ⋅ s−1 to 9 m ⋅ s−1, and can hold onto various pole types larger than 28% of its wingspan in diameter. We demonstrate crash-perching on tree trunks with an overall success rate of 73%. The method opens up new possibilities for the use of aerial robots in applications such as inspection, maintenance, and biodiversity conservation.

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Name

2024-Comm Eng-Crash-perching on vertical poles with a hugging-wing robot.pdf

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Main Document

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Published version

Access type

openaccess

License Condition

CC BY

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2.48 MB

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Adobe PDF

Checksum (MD5)

06c720153b03b3325ebd4bcd40bbb604

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