3 ms·
Random question, why not 1 blade and a counterweight?
by chris_va 10y ago
Random question, why not 1 blade and a counterweight?
- brandmeyer 10y agoOne-blade systems do have a counterweight. There are two parts to the vibration problem: One is that the flow field on the lee side of the tower is quite a bit different from the rest of the blade's sweep, so there is a once-per-turn torque pulse in that part of the path. The other is that the air flow field above the height of the nacelle is different from that below the nacelle. Since you are still in the planetary boundary layer, the airspeed varies with height.