Mike Friend spent 36 years with Boeing, rising to positions as Chief Engineer and Technology Director. His technical and linguistics abilities helped make him a world traveler, creating the first fuel-cell powered airplane in Spain, for instance, in 2002 through 2008, when the demonstrator craft first flew. That was the first of many hybrid designs Mike would work on, with samples of his work on display this month in Beijing. At the E-Flight Forum, sponsored by Siemens, he held forth on single-, two-, and five-seat configurations that could benefit from hybrid power. His talk, “Hybrid electric aircraft concepts, and a rational approach to success,” explained his reasoning for being enthusiastic about hybrids and showed different ways hybrid technology could be applied to different missions. He points out that even though batteries have gone past the “tipping point” for practicality, they are heavy. What is not of concern on a bus is a major problem in a light airplane. (The talk …