They didn’t feel that it was safe enough to not have HUD as a fallback in case something went wrong.Why didn't they do full helmet mounted display for J-20, give up HUD but doing it for 6th gen? We're they behind F-35 when it comes to Helmet mounted display or augmented reality helmet?
Another thing also doesn't make sense, j-36 has 2 HUDS for the two pilots. Surely, J-36 is higher end than J-50 and should have higher end helmet?