VTOL Flexrotor Flies 32 Hr. As Small UAVs Push Endurance Limits
October 17, 2017
http://aerovel.com/wp-content/uploads/2017/10/Aviation-Week-Coverage-10-17-17.pdf
October 17, 2017
http://aerovel.com/wp-content/uploads/2017/10/Aviation-Week-Coverage-10-17-17.pdf