Rotorcraft
Agusta hot to trot on civil tiltrotor
Unfazed by (or perhaps because of) murmurs from within Bell Helicopter management to the effect that development of the BA609 might be accelerated, Agusta-

Unfazed by (or perhaps because of) murmurs from within Bell Helicopter management to the effect that development of the BA609 might be accelerated, Agusta- Westland has released some details of its developmental Erica tilt-wing aircraft (so-called because in the Erica’s case the entire wing is rotated between fixed- and rotary-wing flight).

The central issue between  the two designs is whether it’s better to tilt the wing structure along with the engine and prop-rotor, or simply to leave the wing in place and tilt the prop-rotor and engine between the helicopter and airplane modes.