The Kaman K-MAX is a helicopter with intermeshing rotors (synchropter) designed and produced by the American manufacturer Kaman Aircraft.
Kaman K-MAX
K-1200 operated by Timberline Helicopters
Unmanned K-MAX flown by the US Marines
A HELOG Kaman K-Max (HB-XHJ, crashed in 1998)
A cargo hook is a device suspended below a helicopter and allows the transport of external loads during flight. Common terms for this operation include slingwork, underslung loads, external loadwork, and external load operations.
K-1200 K-MAX
A Eurocopter AS350 helicopter with a belly hook installed. This configuration is called a swing or suspension system mount because the actual cargo hook drops down from inside a swing frame that is suspended from the fuselage by four cables.
A Robinson R44 Raven II helicopter using a remote hook to lift Christmas trees. The remote hook is suspended from the belly hook with a long line.