The electric motor might carry the hype banner at the moment, but some minds remain convinced that there's plenty of innovation left to be extracted from internal combustion. AIE is one of the rotary engine's biggest champions and has been advancing new rotaries via the latest manufacturing tools and techniques since 2012. Its latest release shows that Wankel engines can be a perfect fit for compact, power-demanding applications in robotics and aerospace. More palmable than a basketball, the 40ACS Wankel packs a power-to-weight punch in a package that disappears away in small spaces. The last time we looked in on...