OK! Due to popular demand, it's back to the rotor.

[list=1][*]Nature's creatures are laterally symmetrical.
(Trivia ~ Even facial symmetry is advantageous when attracting a mate.) [*]Man's improvements are founded in nature.[*]Vehicles, excluding abnormalities such as motorcycle sidecars and tail rotor helicopters, have lateral symmetry.[/list=1]
The non-rotor related crash of the 3-blade intermeshing
Kellett helicopter and the death of the test pilot put an end to Kellett's intent to build a stronger rotor. Since then, two generations of stronger and lighter materials have become available for the production of rotors with greater rigidity.
- Is it not time to take the helicopter up a generation or two?
- Is it not time to reconnect with the ingenuity of Nature and the aspirations of Flettner and Kellett?
- Is PPRuNe not the place to pull ahead of the crowd?

- Last and least ~ Is this posting a little too brash to be a 'letter to the editor' of AHS's Vertiflite?
