Aerovel Flexrotor pushes the “Group 2” limit

Diminutive, and squat on its four lunar-lander legs, a Flexrotor spins-up its outsize rotor,levitates into the sky, and transitions" to a relaxed, sailplane-like cruise. Always otherworldly for the uninitiated, the show this time was a little unusual even for old hands. This Flexrotor was carrying more than it ever had before. Aerovel's Flexrotor uniquely combines [...]