The Navy’s Pivot to Heavy-Fuel Drones
The U.S. Navy is preparing to overhaul how the Marine Corps handles the “last tactical mile” of resupply, signaling a departure from the battery-dependent systems that have defined recent years. The Navy has issued a formal call for industry partners to participate in a fly-off competition for the Marine Corps’ second-generation resupply drone in Huntsville, Alabama, in early 2027. The goal is to field a second-generation Tactical Resupply Unmanned Aircraft System (TRUAS Increment II) that relies on diesel or jet fuel rather than rechargeable battery packs.
This shift addresses a fundamental bottleneck in modern expeditionary logistics. While the current fleet of TRV-150C drones—the battery-electric workhorses purchased in 2023—has served a vital role, its operational range is limited to about 9 miles when carrying a full load. The new requirements demand a significant leap in capability: an aircraft capable of hauling 100 pounds across 46 miles and returning to base without a mid-flight fuel stop.
Closing the Logistics Gap in Expeditionary Environments
The move toward heavy-fuel propulsion is driven by the practical realities of the battlefield. Currently, logistics units must transport, manage, and recharge heavy battery packs at forward locations, creating a complex supply chain for the supplies themselves. By shifting to powerplants that run on JP-5, JP-8, or standard diesel, the Marines can use the same fuel already flowing to their ground vehicles and generators.
The solicitation posted October 30 by the Navy’s Direct Reporting Portfolio Manager for Robotic and Autonomous Systems outlines a demanding performance profile. Beyond the range and payload requirements, the aircraft must cruise at a minimum of 50 knots and stay below 1,000 feet. The system must also be highly portable, fitting within a 4-by-3-by-2-foot container and weighing under 150 pounds, with a target setup time of just 20 minutes.
Operators Manage Multiple Aircraft Using Voice Commands
The Navy is also looking for a paradigm shift in how these systems are operated. The new requirements specify that one operator should be able to manage up to four aircraft simultaneously, utilizing encrypted radios and natural-language voice commands. The service explicitly notes that the system should be as intuitive as “ordering food delivery or ride-sharing services,” a design goal that reflects the need to reduce the cognitive load on Marines in high-stress environments.
The U.S. Navy is seeking cargo drones for the U.S. Marine Corps’ TRUAS Increment II, requiring aircraft that can carry 100 pounds (45 kg) 40 nautical miles (74 km) out and back without refueling.A demonstration is scheduled for Jan. 25–Feb. 5, 2027, in Huntsville, Alabama, with… pic.twitter.com/2tgE0n5lzX
For the companies vying for these prototype agreements, the window to act is narrow. Applications are due by November 30, 2026, with a technical question period closing on November 13. Following the demonstration, which runs from January 25 to February 5, 2027, the Navy may bypass further competition for successful candidates, moving them directly into production contracts.
Military Restricts Competition to Domestic Drone Firms
This competition is restricted to U.S.-owned firms that comply with the American Security Drone Act, showing the military's ongoing focus on supply chain sovereignty. The Navy’s approach here mirrors the defense trend of using marketplace-style procurement, similar to the Army’s drones.mil platform, which has already facilitated over $800 million in sales in its first four months.
While the transition to heavy-fuel engines offers clear advantages in range and logistical simplicity, it introduces its own set of engineering challenges. Hybrid and heavy-fuel systems are inherently more complex than the electric motors currently in service, potentially increasing maintenance requirements at the unit level. The Marine Corps, which plans to issue three to six drones to every logistics battalion by 2028, will ultimately need to balance these performance gains against the trade-offs in system weight and mechanical reliability.
As the December 18 selection date approaches, industry eyes remain fixed on Huntsville. The outcome of these trials will likely dictate the standard for tactical resupply for the next decade of expeditionary operations.
