The K-MAX uses a unique double rotor system where the two rotors cross each other. Kaman Aerospace calls these "intermeshing rotors." Its opposing rotors eliminate the need for a tail rotor.

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

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 ...