While small drones have amply proven their utility in the commercial sector and on the modern battlefield, one crucial limitation persists: their cargo carrying capacity. To overcome this barrier, the Pentagon’s Defense Advanced Research Projects Agency (DARPA) is launching a new competition, „Lift,” designed to revolutionize multirotor drone operations. The goal is ambitious: to design unmanned systems capable of carrying up to four times their own weight.
A Strategic Need: Beyond the 1:1 Payload Ratio
Currently, most small drones can carry a payload equivalent to roughly their own weight or even less. This limitation forces military and civilian users to opt for larger, more expensive aircraft, even as they envision much more versatile applications for drones. „When I’ve talked to military and industry, they have big dreams for drones, and they see a lot of applications. But then when they actually get down to it, the payloads that they want” often require a much larger, more expensive aircraft, Phillip Smith, DARPA’s lead for the Lift contest, stated. „So if I can switch that, if I can make them very small and therefore cheap, this challenge can actualize the dreams that a lot of people have of using drones in both the military and civilian sectors.”
The Rules of the Game: DARPA’s Challenge
The competition, scheduled for the summer, will impose strict conditions on participants. Drones must weigh less than 55 pounds (approximately 25 kg) and, in under 30 minutes, must take off unassisted, carry a payload of at least 110 pounds (approximately 50 kg) for four nautical miles (7.4 km), safely drop it off, fly an additional nautical mile, and make a precise landing. Competing teams will have two separate, 90-minute windows for the task, aiming to post their best score. Aircraft must consistently fly at an altitude of roughly 350 feet (106 meters), with a margin of +/- 50 feet, covering the distance in several laps within a narrow circuit and remaining within visual line-of-sight of the person piloting it. Teams must be led by either US companies, or citizens or permanent residents if competing as individuals, but can have foreign teammates—provided they do not reside in any countries deemed restricted by the Pentagon.
The Stakes and Rewards: Millions of Dollars for Innovation
Participants will primarily be scored based on their payload-to-weight ratio. For example, a 20-pound drone carrying the required 110 pounds would score better than a 30-pound one with the same payload. The 110-pound requirement is just the floor, as DARPA wants to see the maximum amount of weight that can be carried by a less-than-55-pound drone. The prizes are substantial: $2.5 million for first place, $1.5 million for second, and $1 million for third. DARPA also plans to hand out three, $500,000 prizes for „subjective categories” like a „most revolutionary aerodynamic design.”
Breaking Barriers: An Industry Gap and a Revolution in Sight?
Smith emphasized that while the competition is not supposed to be easy, it is theoretically possible, with the ambitious goal of a four-to-one payload-to-weight ratio decided upon after collecting input from industry. Advances in flight controls, structures, materials, and powertrains make this target more feasible. Notably, eligible drones do not have to be NDAA-compliant (National Defense Authorization Act), a decision intended to remove barriers to entry for more competitors in an industry dominated by cheaper, Chinese-sourced components. By doing so, DARPA is attempting to „highlight that there is an American industry gap here” and underscore that excitement generated around new designs could pave the way for investment. While the quick timeline and competition constraints mean there are plenty of ways things could go awry for competitors, Smith noted that the public nature of the event could expose „out-of-the-box thinking designs” to a wide audience, prompting some to perhaps „continue on” and create combinations of different ideas. „If we show a four-to-one ratio, or even a three-to-one ratio, there’s going to be massive interest,” Smith concluded. „I’ve already got people saying, ‘I’m going to show up, because I don’t believe this can work.’ But if it does, if somebody pulls it off, then you know, it’s off to the races.”
