Comments on: What do Transformative Electric Aircraft, Dr. Paul MacCready and Silent Owl Wings all have in common?

Comments on: What do Transformative Electric Aircraft, Dr. Paul MacCready and Silent Owl Wings all have in common? http://sustainableaviation.org/sas2016/blog/transformative-electric-aircraft/ Sustainable Aviation Symposium Sun, 25 Feb 2018 07:57:15 +0000 hourly 1 https://wordpress.org/?v=4.8.1