The concept of “shear flow” is very significant in aerospace and this is especially true for thin walled structures. Furthermore we all know thin walled structures dominate aerospace structures. Use the links below to learn more.
http://www.stressebook.com/shear-flow-thin-walled-members/
http://www.stressebook.com/Courses/
http://www.stressebook.com/member-area/
http://www.stressebook.com/aerospace-stress-engineering-services/