Inventor
JOHNS ZACHARY R
US4 patents
Patents
4 patentsUS9475579B2Oct 25, 2016
Vertical take-off and landing vehicle with increased cruise efficiency
NASA62 citations94
US10071801B2Sep 11, 2018
Tri-rotor aircraft capable of vertical takeoff and landing and transitioning to forward flight
NASA26 citations91
US9896200B2Feb 20, 2018
Vertical takeoff and landing vehicle with increased cruise efficiency
NASA15 citations89
US10538321B2Jan 21, 2020
Tri-rotor aircraft capable of vertical takeoff and landing and transitioning to forward flight
NASA3 citations70