“If competitors can demonstrate 4:1 payload-to-weight ratios, the result could ripple across commercial and military missions, which have been constrained by today’s roughly 1:1 or lower payload-to-weight ratios,” DARPA said in a statement.

The Lift Challenge will take place from Aug. 2-9 at the National Museum of the U.S. Air Force in Dayton, Ohio, where competitors will flight their drones in a 5 nautical mile circuit course. Prize money will go to those with the highest payload-to-weight ratios and novel designs.

A version of this story originally appeared in sister publication Defense Daily.