Last January, a medical helicopter flying from Mason City to Emmettsburg crashed in a field, killing all three of the people on board; the pilot reported encountering ice and snow just before that crash.

Now, researchers at the University of Iowa and engineers at Rockwell Collins are working on new technology to keep pilots and crew safe in those kinds of low visibility situations.

http://www.engineering.uiowa.edu/news/kgan-tv-researchers-give-pilots-sight-storms

There are many books on Aerodynamics at the Engineering Library that you might find of interest here are a list of a few: http://ow.ly/qVVwg