An aircraft that produces lift using airfoils that are driven and rotate about a vertical axis.
Collective Pitch Control
Used to change simultaneously the pitch of all of a helicopter rotor′s blades to permit ascent or descent.
Cyclic Pitch Control
Means of changing the pitch of a rotor′s blades progressively, to provide a horizontal thrust component for flight in any horizontal direction.
The rotating-wing assembly of a helicopter, comprising the rotor hub and rotor blades.
- glue-it.co.uk Photographic reference material.