It's been a busy few weeks in the cargo drone industry. Both Elroy Aerial and Bell have recently released test footage of their new delivery systems. The field is growing crowded. Yesterday, a cargo-carrying autonomous glider with a 28ft (8.5m) wingspan with a potential payload of up to 1,631 pounds (740 kg) was unveiled at the Defence & Security Equipment International … [Read more...] about YEC Unveils Silent Arrow Cargo Drone in London