Pushing drone design to extremes, DARPA has announced a competition, demanding tiny aircraft haul twice their weight, fly miles, and rewrite the limits of electric lift.
The Defense Advanced Research Projects Agency (DARPA), US, has launched a new contest that is pushing the boundaries of unmanned aviation by demanding that drones lift more than twice their own weight.
The agency has launched the DARPA Lift Challenge formally on 23 October 2025, calling on teams to design an unmanned aircraft weighing no more than 55 pounds that can carry over 110 pounds across a specified flight course.
DARPA has set a prize pool of US$6.5 million. The top award is US$2.5 million, followed by US$1.5 million for second place and US$1 million for third. Additional prizes recognise advances in aerodynamic design, powertrains and promising experimental concepts.
The drone must transport Olympic-standard barbell weights for four miles at 350 feet above ground level. It must then descend vertically to ground level, release the payload, and continue for an additional mile.
Furthermore, vertical take-off and landing are mandatory. Scoring is based on the ratio of payload to aircraft weight. Teams with identical scores will be ranked by payload, followed by the fastest course time.
The challenge highlights ongoing interest in high-lift, small-frame aircraft at a time when electric propulsion and battery technology are evolving rapidly. Aviation enthusiasts note that power density remains the biggest bottleneck. Many believe energy storage above 400 Wh/kg would unlock new fixed-wing electric aircraft and enable practical regional transport.
The announcement has stirred debate among engineers and hobbyists, who see both opportunity and difficulty. Supply constraints in motors and next-generation batteries are likely to complicate development. Some observers argue the schedule is overly ambitious.
Registration opens on 5 January 2026 and closes on 1 May 2026. A fly-off is planned for summer 2026, a timeline that some designers say leaves little room for engineering, prototyping, and flight testing.
DARPA hosted a public webinar on 4 December 2025 to brief potential competitors. The agency says it will not claim intellectual property rights from entrants, raising hopes that the resulting innovations may spur broader applications in transport, emergency response, and future personal aviation.
