Systems, devices, and methods including: a latching mechanism comprising: a first latch configured to attach to a door of an unmanned aerial vehicle (UAV); a second latch configured to attach to a portion of the UAV distal from the first latch; a string connected between the first and second latch, where the string secures the door shut; at least two radio modules in communication with a ground control station; and at least two burn wires in contact with a portion of the string between the first latch and the second latch; where current from a backup battery passes to at least one burn wire when the burn signal is received, where the burn wire causes the connection between the first latch and the second latch to be broken and the door of the UAV is separated from the UAV, and where the parachute is deployed when the door of the UAV is separated from a rest of the UAV.

The present disclosure is directed to a system and method for repairing an abradable material coated on a casing of a gas turbine engine. The system includes an articulating guide configured to fit into an access port of the gas turbine engine. Further, the articulating guide has a proximal end and a distal end. The system also includes a repair tool configured at a distal end of the articulating guide. The repair tool includes a body having a proximal end and a shaped distal end, with the shaped distal end extending away from the body. Thus, the shaped distal body is configured to trench out an area of the abradable material comprising a defect. The system also includes a filler material for filling the trenched out area.

A transverse cutting system for a machine for the production of plastic film includes a supporting structure carrying a cutting unit, which are moved between a rest position away from a path of a plastic film being wound and an operating position along the path of the plastic film; a rotating support carrying a hot wire; a rotating cap, associated to an idle roller and arranged transversally to the path of the plastic film that is moving forwards, and an actuator, which controls the rotation of the rotating support carrying the rotating cap and causes the rotating cap to interfere with the plastic film before the hot wire also interferes with said plastic film. The same plastic film, owing to the friction force generated by the rotating cap, entrains it with it, causing the rotating cap to equalize the linear velocity of the plastic film.

A transverse cutting system for a machine for the production of plastic film includes a supporting structure carrying a cutting unit, which are moved between a rest position away from a path of a plastic film being wound and an operating position along the path of the plastic film; a rotating support carrying a hot wire; a rotating cap, associated to an idle roller and arranged transversally to the path of the plastic film that is moving forwards, and an actuator, which controls the rotation of the rotating support carrying the rotating cap and causes the rotating cap to interfere with the plastic film before the hot wire also interferes with said plastic film. The same plastic film, owing to the friction force generated by the rotating cap, entrains it with it, causing the rotating cap to equalize the linear velocity of the plastic film.

Disclosed is a package delivery mechanism (PDM) of an unmanned aerial vehicle (UAV). The PDM includes a gravity activated locking mechanism to lock and unlock a package attached to the UAV based on the weight of the package. When the package is attached to suspension means of the UAV that lowers the package to the ground from the UAV, the locking mechanism automatically engages with the package and keeps the package locked to the suspension means, due to the weight of the package. When the package is lowered and reaches on the ground, the weight of the package is offloaded from the suspension means, which enables the locking mechanism to be disengaged, thereby releasing the package. The PDM includes a severing module to sever the suspension means from the UAV.

Disclosed is a package delivery mechanism (PDM) of an unmanned aerial vehicle (UAV). The PDM includes a gravity activated locking mechanism to lock and unlock a package attached to the UAV based on the weight of the package. When the package is attached to suspension means of the UAV that lowers the package to the ground from the UAV, the locking mechanism automatically engages with the package and keeps the package locked to the suspension means, due to the weight of the package. When the package is lowered and reaches on the ground, the weight of the package is offloaded from the suspension means, which enables the locking mechanism to be disengaged, thereby releasing the package. The PDM includes a severing module to sever the suspension means from the UAV.

The application belongs to the technical field of hot angle-cutting automata for earmuff sponge of earphones, and discloses a fully automatic sponge chamfering machine, which comprises a rack, a man-machine interface and a button system set on the enclosure, a three-color alarm lamp fixed on the enclosure, a suction module set on the enclosure, a safety grating module set on the enclosure, and an air extraction module set on the enclosure. The application has high degree of automation, high positioning accuracy, and high work efficiency.

A method and system for constructing an architectural component from a three-dimensional form, the system including a movable support table for supporting and moving a three-dimensional form, a multi-task robotic arm having a base end configured for controlled movement along a path proximate the support table and a distal end configured to extend, translate, and/or rotate relative to the base and to include an end effector for applying successive layers of material onto a form on the support table, optionally, a linear rail to which said base is attached, and a computer processor for controlling a sequence of movements of the support table, the base, and the distal end of said multi-task robotic arm, and for controlling application of material to the three-diniensional form to form an architectural component of a predetermined shape and dimension.

A method and system for constructing an architectural component from a three-dimensional form, the system including a movable support table for supporting and moving a three-dimensional form, a multi-task robotic arm having a base end configured for controlled movement along a path proximate the support table and a distal end configured to extend, translate, and/or rotate relative to the base and to include an end effector for applying successive layers of material onto a form on the support table, optionally, a linear rail to which said base is attached, and a computer processor for controlling a sequence of movements of the support table, the base, and the distal end of said multi-task robotic arm, and for controlling application of material to the three-diniensional form to form an architectural component of a predetermined shape and dimension.

A hot wire cutting machine. Hot wire cutting machine comprises a heated wire (101); springs (102 and 102a) and grooved rods (103, 104 and 401) supported on end bearings (402 and 403) and optional bearings (404) at middle of the rod (103, 104 and 401) wherein the rod (401) is coupled to a motor 504 for rotating the rod (401) in the direction of wire movement due to thermal effects and achieve minimum rubbing between wire and rod. The composite cutting wire comprises a first wire (1209) which is thicker, braided, high-strength, low electrical resistance joined with a second wire 1201 which is having high-electrical resistance (NiChrome) wherein the first wire (1209) and second wire (1201) are joined by manual twisting/welding and the first wire (1209) is capable of withstanding bending cycles moving over threaded/grooved rod (1203) and oscillated along its length by to-fro rotation of splined shaft (1204).