Importance

Loading Importance Indicators...

Abstract

A device (4200) for an Unmanned Aerial Vehicle, UAV (100), said device (4200) comprising a first pivot point (4212) and a second pivot point (4214) being spaced apart from each other, said first pivot point (4212) is connectable a UAV (100) and said second pivot point (4214) is connectable the UAV (100), said device (4200) is configured to be tilted/rotated around said first pivot point (4212) by adjusting a length of a second cord (4204) and/or tilted/rotated around said second pivot point (4214) by adjusting a length of a first cord (4202), wherein said device (4200) has a first winch motor (4292) and a second winch motor (4294), said first and second winch motors (4292, 4294) are configured for adjusting the length of said first and second cords (4202, 4204) respectively. Also provided is a harvesting tool (105, 110) comprising a base structure (650), said base structure having attached to it at least one cutting means for delimbing a tree (114a, 114b), at least one means for communicating with a UAV and/or a remote base station, at least one cutting means for cutting a tree trunk (116), at least one attaching means to be attachable to the UAV (660), at least one holding means for holding a tree trunk (105,107a, 107b, 114a, 114b). Also provided is a method for controlling the relative rotation between a UAV and a device, where the device is attached to said UAV via at least two cords, said method comprising the steps of: a. determining a reference rotational position of said device relative to said UAV, b. detecting an angular rotation R in a horizontal plane of said device relative to said reference position, c. compensating said angular rotation in said horizontal plane of said device by rotating said UAV in said horizontal plane in the same direction and by the same angular rotation R as said device for prohibiting twisting of said cords.

Loading the Abstract Image...

First Claim