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Old February 9th, 2014 #1
Alex Linder
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Join Date: Nov 2003
Posts: 45,756
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Default #1 Helicopter Thread

[three-rotor copters set new standard, apparently]

Its safe to say that the helicopter changed the way that we move passengers, cargo, soldiers and more. The ability for the helicopter to take off and land vertically has always hampered its ability to reach a faster top speed. But that’s all about to change with a new generation of helicopter that can travel as fast as a plane, but still perform all the tasks characteristic of a copter.

The origins of the Sikorsky X2 dates back to the S-69 Advanced Blade Concept in 1973. In 2008, this experimental copter made its first flight. Unlike traditional helicopters that use a stabilizing rotor at the aft of the fuselage, the X2 uses two counter-rotating blades to maintain stable flight. The prop at the aft of the X2 is mostly for propulsion, allowing is to hit speeds of 250 knots (290 mph). Check it out in action here:


http://autos.yahoo.com/news/three-ro...140054298.html
 
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