720p HD Strange Helicopter! (twin counter-rotating blades) for heavy lift

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Uploaded by on Feb 16, 2009

This unusual helicopter was being used to transport large and apparently heavy loads to the construction crews at remote 500kv power transmission line tower construction locations in Bouquet Canyon. The shape of the body and especially the sound of the rotors was very weird!

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  • I think this perhaps would be easier to fly as you just have the collective and the awe/pitch stick. I forgot the name for that. Neat design though and yes just like a airhogs..

  • This is the worlds strongest lifting configuration for a helicopter frame. used mostly for construction.

  • This is an interesting configuration - rather than having one shaft with two opposite-rotating rotors (one above the other like the air-hogs model helicopters), this design has two rotor heads right next to each other, set at different angles to vertical, with opposite-rotating blades that actually inter-mesh and cross each others' path. They must be "hard-geared" so that the rotation timing cannot vary and cause them to hit each other. There's no tail rotor either. Fascinating design :-)

  • isn't it just a helicopter with a second level of blades?

  • The back-pack type of mini-copter I was referring to (such as the Dragonfly) was intended only as a response to the comment above about getting rid of the tail, not to identify the Kaman K-Max shown in this vid. Not sure why they removed the structured/indented comment responses - this new format kinda confuses things. Anyway, thanks for the input :-)

  • @jcmegabyte

    no, it's not a mini-copter, it's a K-Max, mostly used for logging.

  • @mch295

    it's a K-Max, from Kaman (U.S.) and the design is German...

  • I think there is a personal (backpack-style) counter-rotating mini-copter that is virtually tail-less... Sounds like a fun way to get around! =)

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