You can observe this design on K-MAX helicopters, developed by Kaman Aerospace Company. Instead of just one main rotor, there are two, and they spin opposite each other to create lift for K-MAX ...

The K-MAX is ideal for precision lifting and placing; it's valuable to firefighters, construction firms, and the military. Following is a transcript of the video. This helicopter has dual-crossing ...

Kaman will discontinue its K-Max, saying production of the heavy-lift helicopter is not a "compelling" growth opportunity. The more than 80-year-old division supports over 100 aircraft platforms ...

The design is aimed at the U.S. Marine Corps, for which Kaman previously developed an optionally crewed version of its K-Max ...