Advanced technologies and new roles for VTOL aircraft (Part II/II)

This survey paper intends to overview some main technical evolutions impacting present and future general design of rotorcraft (for vehicles, engines and systems), including helicopter and future tilt-rotor. These trends tend to achieve a better adaptation to a wide range of mission requirements with an economic aircraft optimisation and an enhanced safety level and environmental impact. Whilst part I considered the whole rotorcraft technical activity, the present part II is essentially focused on market issues and the tilt-rotor concept introduction.