The JetCat P400 is a small turbojet identified in NASA and Lockheed Martin documentation as the powerplant of the X-56A Multi-Utility Technology Testbed. Two engines propel the remotely piloted aeroelastic research aircraft. This model-level identity follows the P400 designation used in the aircraft documentation. The manufacturer also markets separately designated P400-PRO-LN configurations; their current dimensions, mass, and ratings should be read against those exact product designations.