Green Flight Challenge Down To Four Teams
By Wednesday, only four of the original 13 contenders were still in the running for the $1.65 million NASA prize purse in the Green Flight Challenge. The event, which is ongoing in Santa Rosa, Calif., through the weekend, has eliminated all the contenders except PhoEnix, Pipistrel-USA, Embry-Riddle Aeronautical University’s EcoEagle, and e-Genius. All met a […]