The small wind tunnel with a 16-by-16 inch test section is a low speed, open return tunnel, as shown in Figure 1. It is mainly used for airfoil section tests and teaching. he velocity is up to 50 m/s.

A small wind turbine can be surprisingly affordable — as long as you don't have to mount it on a tall tower to catch the wind ...

Over the past decade, wind turbine use has increased more than 25 percent per year. Still, it only provides a small fraction of the world's energy. Most wind energy comes from turbines that can be ...