3/4 lower front view of Controllable Twist Rotor (CTR) test of 4 blade helicopter model.  Pictures with Ben Mandwyler Andy Lemnios, John McCloud (wheel chair), in 40x80 foot wind tunnel.  Small flaps on rotor blades.
Controllable Twist Rotor in 40x80 Foot Wind Tunnel at Ames.
3/4 lower rear view of Controllable Twist Rotor (CTR) test of 4 blade helicopter model. Pictures with Ben Mandwyler Andy Lemnios, in 40x80 foot wind tunnel. Small flaps on rotor blades.
Controllable Twist Rotor in 40x80 Foot Wind Tunnel at Ames.