The pilot's seat, the engine and rotor assembly are bolted to the same keel tube.

The simplest turbines have one moving part, a rotor assembly, which is a shaft with blades attached.

In all other electric machines, the rotor assembly is passive real estate that does not actively contribute to power production.

The aircraft with the same frame and rotor assembly can be converted to a powered gyroplane.

A threaded nut holds the disks in position on the shaft, the final piece of the rotor assembly.

The glider's left wing banged against the protected rotor assembly.

In 1985, the Army identified a defect in the main rotor assembly and ordered it corrected.

There's a little difference with the rotor assembly, slightly different parts needed to build.

A spare rotor assembly was kept in unit's top cover.

Tandem rotors are two horizontal main rotor assemblies mounted one behind the other.