The U.S. Defense Department is pushing the envelope with its latest initiative, the Series Hybrid Electric Propulsion AiRcraft Demonstration program, now officially known as XRQ-73 SHEPARD. This program isn’t just about new engines — it’s about fully autonomous flying. SHEPARD is developing a hybrid electric propulsion system designed to extend the flight endurance of autonomous aircraft significantly.

This project is a spin-off from the technologies tested in the earlier Great Horned Owl initiative, aiming to streamline the adoption of these innovations into fully operational drones. By focusing on hybrid-electric technology, SHEPARD is setting the stage to enhance the capabilities of future unmanned missions.

Northrop Grumman Corporation’s Aeronautics Systems sector in Redondo Beach, California, has taken the lead as the prime contractor for SHEPARD. The collaborative effort also features key contributions from the Air Force Research Laboratory and the Office of Naval Research, ensuring that the project aligns closely with the practical needs and insights of those on the front lines.

SHEPARD represents a strategic advancement in the development of defense technology, specifically targeting the efficiency and utility of autonomous military aircraft.