Professor and department head for the School of Aeronautics and Astronautics at Purdue University Bill Crossley answers questions about airplanes and aerospace engineering from Twitter. How do ...

At the heart of flight lies Newton's third law: for every action, there is an equal and opposite reaction. This principle explains how an airplane wing generates lift. When an airplane moves forward, ...

Willard Custer has never forgotten the day back in 1925 when he had to dive into a barn to escape a big wind roaring through the Back Creek Valley of West Virginia. A few minutes later the roof took ...