This is pretty neat: Makani Power is a company that is developing airborne wind turbines as an energy source. On their blog, they are posting various notebook pages by their engineers showing their work in progress:
Eric Chin’s Avionics Notebooks.
Peter Kinne’s H-Tail Test Sketches
Notebooks: Dr. Paula Echeverri
Spot on with this write-up, I truly believe that this amazing site needs a great deal more attention.
I’ll probably be back again to read through more, thanks for the advice!