Extendible Main Rotors
Joined: Nov 2004
Posts: 1,334
Likes: 0
From: Cambridgeshire, UK
Right, i'm with you, Dave. Flettner tried many interesting things, including replacing the sail with a magnus effect rotor.
http://en.wikipedia.org/wiki/Flettner_ship
Ultimately I imagine X2 derived designs will consign compounds designs to history, if only because all the complexity/cost is in the rotor system. Many stop rotor concepts are still valid though, as the ideal is to be able to slow down rotors in flight. Once dynamic vibration suppression is developed for blade tips (reverse flow region), i would be curious what the top speed limit actually is. Maybe compressibilty effects...
http://en.wikipedia.org/wiki/Flettner_ship
Ultimately I imagine X2 derived designs will consign compounds designs to history, if only because all the complexity/cost is in the rotor system. Many stop rotor concepts are still valid though, as the ideal is to be able to slow down rotors in flight. Once dynamic vibration suppression is developed for blade tips (reverse flow region), i would be curious what the top speed limit actually is. Maybe compressibilty effects...
