This is coolbert:
Here is the future and the future is NOW!
The high-speed helicopter. Triple rotor configuration, a PUSHER!
1. The Sikorsky X-2.
"The Sikorsky X2 is an experimental high-speed compound helicopter with coaxial rotors developed by the American aircraft manufacturer Sikorsky Aircraft."
"On 4 May 2009, Sikorsky unveiled a mock-up of a Light Tactical Helicopter derivative of the X2."
The Light Tactical Helicopter to be the replacement for the ancient but venerable OH-58. That two-seater observation helicopter ["loach"] even active during the Vietnam era.
2. "Three-Rotor Copters Set to Change Civilian, Military Helicopter Designs Forever"
Such "choppers" are possible with the smaller designs but scaling up is difficult? A devoted reader to the blog who knows helicopters and aviation is conversant in this matter?
See my previous blog entry regarding the X-2 European"high-speed" helicopter.