Abstract: A system comprising: one or more Unmanned Aerial Vehicles (UAVs); and a UAV carrier configured to carry the UAVs from an origin to a destination; wherein the UAV carrier comprises a first controller configured to release the UAVs from the UAV carrier; and wherein each of the UAVs comprises: one or more motors configured to generate, directly or indirectly, a lift, lifting the UAV; and a second controller, configured to: activate at least one of the motors upon fulfilment of one or more conditions, thereby generating the lift, wherein after the release of the respective UAV and before the activation of the at least one motor of the respective UAV the motors of the respective UAV are inactive.

Abstract: A sensor wall placing Unmanned Aerial Vehicle (UAV) comprising: a UAV frame; a plurality of motors; a mounting mechanism configured to detachably attach a sensor casing comprising at least one sensor, during flight of the sensor wall placing UAV, the mounting mechanism being connected to a top part of the sensor wall placing UAV so that the mounting mechanism is facing upwards from the top part of the sensor wall placing UAV, and upon detachably attaching the sensor casing to the mounting mechanism, a face of the sensor casing faces away from the sensor wall placing UAV thereby enabling the sensor wall placing UAV to perform a maneuver that results in direct contact between the face of the sensor casing and a target wall.

Abstract: A system comprising: an Unmanned Aerial Vehicle (UAV) carrier comprising a power supply, the UAV carrier connected, via respective wires, to one or more UVs, wherein: (a) each of the UVs is capable of performing maneuvers irrespective of maneuvers of the UAV carrier during performance of a mission; and (b) each of the UVs receives at least one of an electrical current from the power supply or digital data from the UAV carrier through the respective wires, during performance of the mission.