rotor head
rotor shaft

This was fed through ducting in the leading edge of the wings and up to the rotor head.

Variant with the same frame and rotor head as a KB-2.

They placed explosives near the avionics system, the communications gear, the engine, and the rotor head.

It caused Manigot to slide toward the mast of the rotor head.

The main rotor head and the transmission tore loose and shifted forward.

The panels over the rotor head and transmission had been removed.

The servo control system was entirely contained within the rotor head, with no external oil tanks or plumbing.

Behind one such stack was the chopper, the rotor head and the blades the only parts visible.

Neither the gearbox nor the rotor head could be recovered.

Fewer parts mean less maintenance than conventional rotor heads.