A delivery system and a method of delivering articles are provided. The system has a secure box having a planar top wall and a cylindrical sidewall, and a reclosable opening in the top wall, at least one reclosable opening in the sidewall. The system is configured to open the top wall opening for receiving an article into the secure box and for closing and locking the top wall opening, upon the article being received in the secure box. A round conveyor having at least two partitions and is configured and disposed to hold the article and to rotate and dispose the article proximate the sidewall opening for a recipient of the article.

A vertical takeoff and landing (VTOL) aircraft, including: a vehicle controller circuit programmed to operate the VTOL aircraft without an onboard human operator; a rotor system; an airframe; and an external cargo coupling to receive an external payload of at least approximately 300 pounds beneath the airframe.

Delivery systems for aerial vehicles include a plurality of securement straps configured to secure a package during flight of an aerial vehicle, at least one retaining strap, and a release mechanism. A proximal end region of each securement strap and a first end region of the at least one retaining strap are coupled to the aerial vehicle. A distal end region of each securement strap is coupled to the release mechanism such that when the release mechanism is actuated the release mechanism releases the distal end region of at least one securement strap of the plurality of securement straps, thereby delivering the package. The release mechanism remains coupled to a second end region of the at least one retaining strap when the release mechanism is actuated such that the securement straps, release mechanism, and retaining strap all may be pulled up and away from the package after delivery.

Systems and methods for delivering payloads are described. In some embodiments, a system may include a tether, a release wire, and a coupling. The system may have a first state and a second state. In the first state, a portion of the coupling may extend through an opening in the tether and engage the release wire. In the second state, the release wire may not engage the portion of the coupling such that the portion of the coupling can pass freely through the opening in the tether.

An aircraft cargo hold unloading and collection system having an aircraft body, a lifting device, and a netted shelf. The lifting device is arranged on the aircraft body, and the lifting device is connected to the aircraft body through communication. The lifting device has a retractable cable. One end of the cable can be connected to the cargo hold, and the other end is fixed relative to the aircraft body. The netted shelf is used to be arranged on the ground, and the aircraft body is provided with a position identification part. The netted shelf is provided with a trigger part, and the position identification part can identify the signal transmitted from the trigger part to locate the netted shelf.

A novel and useful system and method of air delivery of payloads incorporating a zero or near zero velocity deployment maneuver that enables aircraft to smoothly deploy payloads without dropping them and without requiring the aircraft to land. A multicopter fitted with the mechanism lowers the payload to smoothly touchdown in a matter of seconds without the need to hover above the destination. In operation, the payload hangs from a tether, pendulum, or robotic arm and is extended prior to arrival to the target destination. The hanging payload begins swinging in a controlled and coordinated manner with the trajectory of the autonomous air vehicle such that the payload arrives at the delivery point at zero or near zero velocity relative to it, while the vehicle maintains its forward movement. The payload is released from the tether at the exact moment the payload touches or is about to touch the ground.

In various embodiments, the present disclosure relates to robot systems configured to operate on a cell tower to inspect, install, reconfigure, and repair cellular equipment. The present disclosure provides a robot for performing audit tasks of cell towers. The robot includes a body portion configured to hold various electronic components of the robot including monitoring equipment disposed thereon, one or more arms extending from the body portion adapted to manipulate components of a cell tower and to facilitate movement of the robot on the cell tower, embedded systems for flight, and wireless interfaces adapted to allow wireless control of the robot. The robot is configured to be controlled by one of a user in a remote location, a user at the cell tower site, and autonomously via direct programing.

In various embodiments, the present disclosure relates to robot systems configured to operate on a cell tower to inspect, install, reconfigure, and repair cellular equipment. The present disclosure provides a robot system for performing audit tasks of cell towers. The robot system includes an Unmanned Arial Vehicle (UAV) adapted to transport a robot to the cell tower; and a robot including a body portion configured to hold various electronic components of the robot including monitoring equipment disposed thereon, one or more arms extending from the body portion adapted to manipulate components of a cell tower and to facilitate movement of the robot on the cell tower, and wireless interfaces adapted to allow wireless control of the robot. The robot is configured to be controlled by one of a user in a remote location, a user at the cell tower site, and autonomously via direct programing.

Delivery systems for aerial vehicles include a plurality of securement straps configured to secure a package during flight of an aerial vehicle, at least one retaining strap, and a release mechanism. A proximal end region of each securement strap and a first end region of the at least one retaining strap are coupled to the aerial vehicle. A distal end region of each securement strap is coupled to the release mechanism such that when the release mechanism is actuated the release mechanism releases the distal end region of at least one securement strap of the plurality of securement straps, thereby delivering the package. The release mechanism remains coupled to a second end region of the at least one retaining strap when the release mechanism is actuated such that the securement straps, release mechanism, and retaining strap all may be pulled up and away from the package after delivery.

A method includes receiving a digital surface model of an area for unmanned aerial vehicle (UAV) navigation. The digital surface model represents an environmental surface in the area. The method includes determining, for each grid cell of a plurality of grid cells in the area, a confidence value of an altitude of the environmental surface at the grid cell and determining a terrain clearance value based at least on the confidence value of the altitude of the environmental surface at the grid cell. The method includes determining a route for a UAV through the area such that the altitude of the UAV is above the altitude of the environmental surface at each grid cell of a sequence of grid cells of the route by at least the terrain clearance value determined for the grid cell. The method includes causing the UAV to navigate through the area using the determined route.