A manufacturing system for manufacturing a composite assembly, comprising: at least one first mandrel having a first mandrel surface and a first mandrel surface edge; at least one second mandrel having a second mandrel surface and a second mandrel surface edge; a first wrap plate positionable above the first mandrel surface and having a first wrap plate surface and a first wrap plate surface edge; a second wrap plate positionable above the second mandrel surface and having a second wrap plate surface and a second wrap plate surface edge; wherein the first wrap plate and the second wrap plate are positionable in parallel side-by-side relation for receiving a wrap material stack having opposing first and second material stack base portions (452, 456); at least one of the first wrap plate and the second wrap plate are configured to translate to a wrap plate open position defining a wrap plate gap between the first wrap plate surface edge and the second wrap plate surface edge for receiving a bladder having a bladder top side; the second mandrel is configured to translate to a mandrel open position defining a mandrel gap between the first mandrel surface edge and the second mandrel surface edge, the wrap plate gap and the mandrel gap being configured to receive the wrap material stack formed around the bladder; and the first wrap plate and the second wrap plate are configured to fold the first and second material stack base portions (452, 456) into overlapping relation with each other onto the bladder top side, wherein the manufacturing system further comprises: a lower forming die being receivable within the mandrel gap and configured to support the wrap material stack against compaction pressure applied to the wrap material stack by the bladder. at least one first mandrel having a first mandrel surface and a first mandrel surface edge; at least one second mandrel having a second mandrel surface and a second mandrel surface edge; a first wrap plate positionable above the first mandrel surface and having a first wrap plate surface and a first wrap plate surface edge; a second wrap plate positionable above the second mandrel surface and having a second wrap plate surface and a second wrap plate surface edge; wherein the first wrap plate and the second wrap plate are positionable in parallel side-by-side relation for receiving a wrap material stack having opposing first and second material stack base portions (452, 456); at least one of the first wrap plate and the second wrap plate are configured to translate to a wrap plate open position defining a wrap plate gap between the first wrap plate surface edge and the second wrap plate surface edge for receiving a bladder having a bladder top side; the second mandrel is configured to translate to a mandrel open position defining a mandrel gap between the first mandrel surface edge and the second mandrel surface edge, the wrap plate gap and the mandrel gap being configured to receive the wrap material stack formed around the bladder; and the first wrap plate and the second wrap plate are configured to fold the first and second material stack base portions (452, 456) into overlapping relation with each other onto the bladder top side, wherein the manufacturing system further comprises: a lower forming die being receivable within the mandrel gap and configured to support the wrap material stack against compaction pressure applied to the wrap material stack by the bladder.