The compound coaxial design of the Raider X means that it has two sets of contra-rotating rotor blades for its main rotor ...

The USMC’s heavy-lift transport helicopter replacement program is underway, and the Lockheed Martin unit is contracted now for a range of CH-53K King Stallion modules, rotor blades, and engines.

“They are a testament to the highly skilled Sikorsky workers and supply chain companies who build the world’s finest helicopters ... of 128 main rotor blade assemblies in support of the ...