If your dog's hair gets in contact with rotating blades, you may regret that decision for your entire life. (breedingbusiness.com)
Several questions have been raised about whether rotating blades on wind turbines are interfering with radar at airports and military installations. (ddears.com)
When wind speed exceeds a certain point, you must lock the rotation with a brake or rotate the blades so they produce zero torque. (pearltrees.com)