A package handling system for delivery of a widget ordered and destined for a delivery stop on a delivery route, includes one or more delivery packages affixed in series to a package feed tape, a feed tape mechanism, said feed tape mechanism configured to engage said package feed tape to propel said package feed tape and said one or more delivery packages affixed thereto, a tape cutter to cut said package feed tape to separate at least one delivery package from said one or more delivery packages, a drone platform positioned proximate said tape cutter, and a drone having a drone feed tape capture system to receive said package feed tape and said at least one delivery package of said one or more delivery packages affixed to said package feed tape, and thus, provides non-person delivery of packages.

A method of applying a herbicide to a flood field (1). The method comprises providing an unmanned aerial vehicle (UAV) (2), and flying the UAV (2) along a plurality of substantially parallel spray flight paths (31). The method also comprises spraying a herbicide composition from the UAV (2) onto the surface of the flood field (1) at a plurality of application areas (11), each one of the plurality of application areas (11) corresponding to one of the plurality of spray flight paths (31), each application area (11) being separated from adjacent application areas (11) by a dispersion area (12) into which herbicide composition sprayed onto the flood field (1) surface can disperse. The herbicide composition comprises an aqueous emulsion (EW).

A method of applying a herbicide to a flood field (1). The method comprises providing an unmanned aerial vehicle (UAV) (2), and flying the UAV (2) along a plurality of substantially parallel spray flight paths (31). The method also comprises spraying a herbicide composition from the UAV (2) onto the surface of the flood field (1) at a plurality of application areas (11), each one of the plurality of application areas (11) corresponding to one of the plurality of spray flight paths (31), each application area (11) being separated from adjacent application areas (11) by a dispersion area (12) into which herbicide composition sprayed onto the flood field (1) surface can disperse. The herbicide composition comprises an aqueous emulsion (EW).

In one aspect an uncrewed aerial vehicle (UAV) is provided. The uncrewed aerial vehicle includes a fuselage and a drag reduction device. The fuselage has a front end, a rear end, a top, and a bottom. The drag reduction device includes a proximal end and a distal end. The proximal end of the drag reduction device is coupled to the bottom of the fuselage. The drag reduction device is rotatable between a rest position and an active position in which the drag reduction device extends downward. A standoff is disposed on a rear side of the drag reduction device and is configured to engage a payload secured under the fuselage and hold the drag reduction device at a distance from the payload when the drag reduction device is in the active position.

An aircraft and its associated aircraft linear support arms. The aircraft linear support arms include at least a rotor motor and a propeller. The rotor motor is connected to the propeller, and the linear support arm has a cross-sectional shape of an inverted teardrop shape. The streamlined structure of the inverted teardrop-shaped arm can reduce eddy currents formed by the propeller's downwash flow due to interference caused by the aircraft body, thereby reducing the wear and tear of the lift motor and increasing the efficiency of the lift motor.

An aircraft and its associated aircraft linear support arms. The aircraft linear support arms include at least a rotor motor and a propeller. The rotor motor is connected to the propeller, and the linear support arm has a cross-sectional shape of an inverted teardrop shape. The streamlined structure of the inverted teardrop-shaped arm can reduce eddy currents formed by the propeller's downwash flow due to interference caused by the aircraft body, thereby reducing the wear and tear of the lift motor and increasing the efficiency of the lift motor.

In a general aspect, a handheld controller device includes a housing and a trigger assembly. The housing is configured to be held in the hands of a user. The trigger assembly includes a pair of triggers extending outward from a side of the handheld controller device and configured to move along respective trigger paths. The trigger assembly also includes a guide and coupling assemblies. The guide assembly is disposed inside the housing and includes, for each trigger, a channel that extends at least partially along the trigger path of the trigger. The coupling assembly is disposed inside the housing and is connected to the pair of triggers. The coupling assembly is configured to transfer motion between the pair of triggers such that, when one trigger moves towards the housing along its respective trigger path, the coupling assembly moves the other trigger away from the housing along its trigger path.

In a general aspect, a handheld controller device includes a housing and a trigger assembly. The housing is configured to be held in the hands of a user. The trigger assembly includes a pair of triggers extending outward from a side of the handheld controller device and configured to move along respective trigger paths. The trigger assembly also includes a guide and coupling assemblies. The guide assembly is disposed inside the housing and includes, for each trigger, a channel that extends at least partially along the trigger path of the trigger. The coupling assembly is disposed inside the housing and is connected to the pair of triggers. The coupling assembly is configured to transfer motion between the pair of triggers such that, when one trigger moves towards the housing along its respective trigger path, the coupling assembly moves the other trigger away from the housing along its trigger path.

Methods and systems relate to propulsion for aircraft that include battery-powered electric motors driving propellers. The methods may use a propulsion analysis model that connects propulsion component models and is used in a propulsion simulation. Exemplary uses of a resulting propulsion selection output from the propulsion simulation include generating a list of propulsion component combinations that may be ranked for performance, assembling the aircraft with the propulsion component combinations, designing of the propulsion components, or adjusting in real-time one or more of the propulsion components. For example, adjusting the pitch of the propeller on the aircraft based on the propulsion selection output may occur automatically by an actuator coupled to the propeller in response to the actuator receiving a command signal from the processor based on the propulsion selection output being performed during flight.

Methods and systems relate to propulsion for aircraft that include battery-powered electric motors driving propellers. The methods may use a propulsion analysis model that connects propulsion component models and is used in a propulsion simulation. Exemplary uses of a resulting propulsion selection output from the propulsion simulation include generating a list of propulsion component combinations that may be ranked for performance, assembling the aircraft with the propulsion component combinations, designing of the propulsion components, or adjusting in real-time one or more of the propulsion components. For example, adjusting the pitch of the propeller on the aircraft based on the propulsion selection output may occur automatically by an actuator coupled to the propeller in response to the actuator receiving a command signal from the processor based on the propulsion selection output being performed during flight.