ZeroAvia has been awarded a Small Business Innovation Research (SBIR) grant by AFWERX to conduct a feasibility study on integrating hydrogen propulsion into Cessna Caravan aircraft. The focus of the study is to reduce engine noise and detectability by leveraging hydrogen-electric propulsion alongside advanced aircraft automation technology. By analyzing the potential for developing an 8,000 lb autonomous aircraft with hydrogen-electric propulsion, ZeroAvia aims to significantly reduce engine noise and thermal signature, thus improving operational efficiency. Hydrogen fuel cells offer advantages such as increased range, duration, and simplified refueling logistics, making them a promising technology for aviation, especially for unmanned aerial vehicles (UAVs). The study will also explore the integration potential of autonomous flight systems to enhance the capabilities of autonomous air vehicles and reduce operational costs. Reliable Robotics, a California-based company specializing in remote aircraft operation, will assist ZeroAvia in this exploration. ZeroAvia is advancing the certification of a 600kW hydrogen-electric powertrain (ZA600), which uses fuel cells to convert hydrogen fuel into electricity for powering electric motors. By collaborating with civil regulators and manufacturers like Textron, ZeroAvia aims to implement hydrogen-electric propulsion systems in aircraft like the Cessna Caravan. Val Miftakhov, the Founder and CEO of ZeroAvia, views the U.S. Air Force's interest in hydrogen fuel cells and electric propulsion for heavy unmanned aircraft as a positive step. He highlights the potential of hydrogen fuel cells to enhance air operations, reduce costs, and improve fuel supply in challenging environments. The study signifies a significant milestone in exploring innovative technologies that could strengthen the national defense of the United States of America.