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. Kaman Aerospace calls these "intermeshing rotors." ...

The Army has no plans to retire the CH-47 Chinook—which, in multiple respects, outdoes every other helicopter in the U.S.

It is a twin-engined medium-lift utility helicopter. It is equipped with a single 4-bladed rotor and a single 4-bladed ... wheel landing gear system, with two non-movable main gear struts ...

For many, the Sikorsky UH-60 Black Hawk helicopter, like the one involved in the Wednesday collision over the Potomac River ...

The K-MAX uses a unique double rotor system where the two rotors cross each other ... They give the K-MAX more control than a conventional helicopter. The K-MAX is the world's first helicopter ...