Over the past decades, flying drones have become indispensable aids in filming, reconnaissance, mapping and cargo delivery, but their functionality is limited by the need for a flat landing area.
In a new study, Swiss engineers have created a drone that can land on vertical pipes, poles and even tree branches. Previously, scientists had discovered that bats can land on vertical objects using their wings as a grip. They also have to switch from horizontal to vertical flight to practically hit the target.
EPFL engineers have developed a drone called PercHug that can glide directly toward a target, land (essentially crash into it), and hover with its wings wrapped around the object. The drone is built using folding wings, a curved nose, a catch and release mechanism, hooks, a bi-stable release mechanism, and a reinforced tail.
Tests showed that the drone could hit and stay in contact with six trees of varying sizes and orientations, with or without an additional nose section. The researchers note that it takes practice for drone pilots to learn how to properly orient themselves toward vertical targets. Adjustments to target size, orientation, and approach speed are needed to improve acquisition.
Source: Ferra
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