MPDO passenger engine

The mid-performance distance-optimized passenger engine or MPDO is a light spacecraft engine developed by DeLuna Ethermotive Company for the second generation of their Prime Voyager line of craft. It is a single-strike fixed loop engine with a slow circuit loop optimizing consistent, sustained energy output at the cost of speed. Developed in 465OT as a response to criticism DeLuna received for outfitting the first generation Prime Voyager with a Lukans Spacefaring engine, the MPDO saw considerable use by several manufacturers until it became outdated around 480OT. The unit was notable for its fuel draw, which was uncharacteristically low for an engine with its output specifications.

The MPDO was DeLuna's first engine developed for small craft; their previous work had been on engines and CE drives for large vessels intended for superluminal travel. In 478OT, the MPDO was succeeded by the DeLuna CC2.