THOR Transformable HOvering Rotorcraft from the Singapore University of Technology and Design (SUTD)

A whole heap of my that's clever and obvious and hard. Hats off to the Singapore University of Technology and Design (SUTD) team that created it. I immediately want to try and build one, but wouldn't know where to start. Efficient forward flight with all the benefit of VTOL. This craft was presented in the ["]