Overhang definition: Where is the rotor centre?
Category: Coordinate systems
Problem
In the user manual, overhang is defined as the distance between tower centre line and rotor centre; but where is the rotor centre exactly?
Solution
The rotor centre is the point where the 3 blade pitch axes meet. Note that there is a built-in assumption in the rotor model that the pitch axes are co-planar and all intersect at a common point. This is also the point where the hub centre load outputs are defined / measured.
Keywords Overhang, rotor centre, hub centre, hub, pitch axis