New Heavy-Lift UAVs Aim to Revolutionize Agricultural and Utility Operations with Extended Flight Times and Unmatched Payload Capacity by DRONELIFE Features Editor Jim Magil A New Hampshire-based company is combining the durability, extended flight time and heavy-lifting capabilities of helicopter technology with the maneuverability and autonomous operation of unmanned … [Read more...] about Rotor Unveils Airtruck and Sprayhawk: Drones with Helicopter DNA