New Delhi, July 23 -- A team of students at Aalborg University in Denmark has successfully designed and built a prototype hybrid drone that can operate both in the air and underwater. Crazy, right? This innovative project demonstrates significant advancements in drone technology by combining aerial and aquatic capabilities into a single device.

At the heart of this drone's unique ability is its variable pitch propeller system. Unlike standard propellers, these adjustable blades change their angle depending on whether the drone is flying or swimming. When in the air, the propeller blades adopt a steeper pitch to create sufficient thrust and airflow for flight. Once underwater, the blades adjust to a lower angle. This reduces drag and allo...