What Is the Fastest Helicopter?

Answer

The Westland Lynx ZB500 holds the record as the world’s fastest helicopter, which is a slightly modified version that was clocked at 249.1 mph. In July 2010, a Sikorsky X2 unofficially clocked at 258 mph, although it has not been confirmed.
Q&A Related to "What Is the Fastest Helicopter"
In 1972, a Lynx broke the world speed record over 15 and 25 km by flying at 321.74 km/h (199.92 mph) In 1963 Bell Helicopter strapped twin turbofan engines to a modified YH-40 Iroquois
http://wiki.answers.com/Q/What_is_the_fastest_heli...
EH-101. It flies at an astonishing 280 km/h deliver up to 30 fully equipped
http://www.chacha.com/question/what-is-the-usmc's-...
The Boeing-Vertol CH-47 Chinook. Top speed of 170 knots (196 mph, 315 km/h) The largest users are the U.S. Army and the Royal Air Force. report this answer. Updated on Wednesday,
http://www.kgbanswers.com/whats-the-armys-fastest-...
The Sikorsky X2. Source(s) http://en.wikipedia.org/wiki/Sikorsky_X2.
http://answers.yahoo.com/question/index?qid=201203...
1 Additional Answer
The fastest helicopter is The Sikorsky X2 Helicopter. The X2 is still under testing and recently completed its first flight at 463 km/hr. It is powered by a Light Helicopter Turbine Engine Co (LHTEC) T800 engine and features fly-by-wire controls.
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The fastest military helicopter is the MI-24 Hinds. The M1-24 Hind can reach speeds of up to 185 miles per hour. It was manufactured by MIL Moscow Helicopter ...
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