Following is a transcript of the video. This helicopter has dual-crossing rotors for increased precision The K-MAX uses a unique double rotor system where the two rotors cross each other.

This iconic dual-rotor helicopter has a legendary history in military aviation, and now it’s part of my personal fleet. In this video, I’m taking you behind the scenes of how I found it ...

Indian researchers have engineered a custom dual quadcopter drone for coastal pollution monitoring. This 85kg drone, equipped with advanced sensors, can carry payloads up to 25kg. It will operate ...

The aircraft also executed 30 transitions between helicopter and airplane modes ... "Sikorsky conducts dual-mode flight of ...