X3 concept – experimental compound helicopter

The Eurocopter X3 concept is a High-speed long-range Hybrid Helicopter (H3 concept) which flies up to 220 knots or 410 km/h. Special thanks to Xavier – http://passiondesavions.blogspot.com webmaster – who stumbled upon this French-subtitled video:

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Sikorsky X2 helicopter milestone – 417 km/h!

The Sikorsky X2 Technology demonstrator reportedly broke the speed record for rotorcraft on Monday at a maximum speed of 225 knots (417 km/h).

The previous record had been set by Trevor Egginton on a Westland G-Lynx at a speed of 216 kts (400 km/h) on August 11, 1986. The fly-by-wire X2 helicopter was flown by Kevin Bredenbeck. Unfortunately, the test flight performance was not officially.

With a counter-rotating coaxial rotor, and its brand new tail configuration, the X2 is more maneuverable as the helicopter gains in speed. Moreover, the X2 would be excellent at low-speed handling as well as hovering.

The X2 Technology demonstrator combines an integrated suite of technologies intended to advance the state-of-the-art, counter-rotating coaxial rotor helicopter. It is designed to demonstrate that a helicopter can cruise comfortably at 250 knots while retaining such desirable attributes as excellent

Thanks to its integrated auxiliary propulsion system – coaxial pusher prop concept, and to other assets among which its reduced hub drag, the Sikorsky X2 prototype should exceed the 250-knot benchmark (463 km/h)!

SIKORSKY X2 VIDEO BELOW :

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Lady Ace 09 revamped 35 years after evacuation of U.S. Ambassador Graham Martin from the South Vietnamese Embassy

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UK Army Air Corps Apache attack helicopter

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