DATA NETWORK, AIRCRAFT OR SPACECRAFT, AND METHOD

A data network, especially a data network for an aircraft or spacecraft, includes a primary data grid, and at least one secondary data grid, the primary data grid including primary data nodes, wherein the primary data nodes are directly or indirectly coupled in data communication with each other, and the at least one secondary data grid comprising secondary data nodes, wherein the at least one secondary data grid is configured to connect the secondary data nodes in a data communication chain and to connect the first secondary data node of the data communication chain to a first respective primary data node and/or the last secondary data node of the data communication chain to a second respective primary data node.