Communications of the ACM
Crash-Defying Quadcopter Lands on Rooftops Pitched at Up to 60 Degrees
This modified drone has the ability to land on rooftops with pitches of up to 60 degrees using specialized landing gear and rapid reverse-thrust capabilities.
Credit: Université de Sherbrooke
Mechanical engineers at Canada's University of Sherbrooke developed landing technology for quadcopter drones that enables them to land on inclined surfaces, which is a challenge for these drones due to their stiff landing gear.
The researchers equipped a DJI F450 drone with specialized landing gear featuring lightweight friction shock absorbers.
The technology also includes rapid thrust reversal capabilities.
In real-world outdoor tests, the drone was able to land on surfaces with slopes up to 60 degrees at speeds of up to 2.75 meters per second (9 feet per second).
The researchers said the technology would allow small drones to land on rooftops, and the higher landing speed would facilitate emergency landings in situations without precise control and sensing.
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