It looks like it has had brain surgery, with only a twisted blade.
2.
A propfan is typically designed with a large number of short, highly twisted blades, similar to a turbofan's bypass compressor ( the " fan " itself ).
3.
Joint research projects between the government and private firms produced a number of innovations that helped increase the efficiency of wind turbines, including twisted blades and special-purpose airfoils.
मोबाइल