A method for performing one or more tasks on a surface via an unmanned aerial vehicle (UAV) or aerial robotics system (ARS) includes tethering a first UAV to a ceiling, a vertical wall, or a second UAV via a tethering cord with an extendible and retractable length, performing at least one task via the first UAV to an object during flight of the first UAV, sensing at least one parameter of the surface of the object via a task sensor, and resiliently adjusting an adjustable sensor arm of the first UAV to facilitate performance of the task(s). The adjustable sensor arm may support the task sensor and be resilient to impact forces caused by direct contact of the task sensor or the adjustable sensor arm with the surface. The tethering cord may be extended or retracted via at least one motor while the first UAV performs the task(s).

The present invention relates to a method for preparing for harvesting of forest using an un-manned vehicle (100) configured to move under the canopy in a forest region, the method comprising: for each of at least one object (110) within the forest region: obtaining, using at least one sensor (120) of the un-manned vehicle (100), information associated with the object (110); assigning an object identity (ID) to the object (110) based on the obtained sensor information, using processing circuitry (210) comprised in or accessible to the un-manned vehicle (100); and 10associating a marker (130) with the object (110) and the obtained sensor information or the object identity (ID) assigned to the object (110). The invention also relates to an un-manned vehicle, a harvesting system and a non-transitory computer-readable storage medium.

An unmanned aerial vehicle (UAV) includes a sprayer configured to generate a pressurized fluid flow and a nozzle configured to receive the pressurized fluid from the sprayer and to generate a spray fan to apply the fluid to a surface. The UAV includes sensors and a control unit to control both flight of the UAV and spraying by the sprayer. The fluid can be stored onboard the UAV in a reservoir or can be remotely stored and pumped to the UAV. The UAV control unit can be preloaded with a spray plan and a flight plan, or the UAV can be controlled by a user.

A bird diverter applicator for drones is disclosed. The bird diverter applicator for drones reduces the risk of electrocution to ground crews and eliminates the need to de-energize the power lines for installation of the bird diverters.