The present disclosure provides various embodiments of a multicopter-assisted launch and retrieval system generally including: (1) a multi-rotor modular multicopter attachable to (and detachable from) a fixed-wing aircraft to facilitate launch of the fixed-wing aircraft into wing-borne flight; (2) a storage and launch system usable to store the modular multicopter and to facilitate launch of the fixed-wing aircraft into wing-borne flight; and (3) an anchor system usable (along with the multicopter and a flexible capture member) to retrieve the fixed-wing aircraft from wing-borne flight.

A case comprises a case body, a case cover, and a snap-fitting assembly comprising a snap-fitting member and a connecting member for fastening the case cover and the case body. The connecting member comprises a first end and a second end opposite to each other. The first end of the connecting member is rotatably connected to one of the case body and the case cover. The other one of the case body and the case cover is provided with a snapping block. The second end of the connecting member is rotatably connected to the snap-fitting member. The snap-fitting member comprises a snapping part configured to be snapped with the snapping block.

A retention system includes a base supporting a wing spar and a post extending through the base from a first side of the base to a second side of the base. The post inserts through an aperture in the spar. A stop is selectively securable to the post over the second side of the base. A locking member engages the post on the first side of the base. The locking member is configured to selectively move the post from an unlocked position to a locked position in which the post is withdrawn toward the first side relative to the unlocked position. A biasing member encircles the post and is positioned between the stop and the second side. When the locking member is in a closed position the biasing member expands to engage the aperture and resist movement of the wing spar. A plurality of cradles may support the wing.

A cargo transport system comprising a spine assembly and a container assembly. The spine assembly comprises a rigid spine and a plurality of mounts arranged on the rigid spine in a plurality of mount rows. The container assembly comprises a plurality of containers and is secured to the spine assembly using at least a subset of the plurality of mounts. Each container of the plurality of containers comprises a plurality of fittings for securing the container to the spine assembly and/or another container of the container assembly. Each mount row extends along a width of the spine assembly, and the plurality of mount rows are spaced apart at regular distance intervals along a length of the spine.

A transport container is provided for a system for detecting a flow of parts. The container comprises a first holder comprising a first specific shape for receiving a first part type to be transported, a first detector for detecting a state of occupancy of the first holder, and a detector of a geolocation of the container and a controller configured to transmit an identifier of the container together with the state of occupancy of the first holder and the geolocation. A system for detecting a flow of parts is also provided, the system comprising a container as described before. A method for managing the flow of parts implementing said system is also described.