The Sikorsky X2 now holds the record for the fastest helicopter in the World. During its recent test flight, this marvel of the air went to a peak of 287 mph (462 km/h). X2 technology demonstrator broke the world speed record in 2010. The speed, reached during a 1.1-hour flight, is an unofficial speed record for a helicopter. It has two rotors instead of one, is operated by just one pilot and is quieter, with the ability to make sharper turns than a typical helicopter. Because the helicopter is powered by both its twin rotors and its pusher propeller, it has enough force to fly at 10,000 feet. The previous record for the fastest helicopter was held by a Westland Lynx since 1986. In 1986 a Westland Lynx model ZB500, that was slightly modified, reached a speed of 249 mph (401km/h), making it the world's fastest helicopter. But those world records may not stay unbroken for long.
Sikorsky S-97 Raider
All-new helicopter, all-new configuration. The S-97 Raider is a light tactical helicopter being developed by Sikorsky. S-97 is a proposed high-speed helicopter based on the Advancing Blade Concept and will be powered by a single engine. The first of two S-97 prototypes was unveiled in October 2014 and has a cruising speed of 253 mph (407 km/h), which is more than double the speed of conventional helicopters. This model can carry a selection of armaments, including a 50 caliber or 7.62 mm machine gun with 500 rounds, a 7-shot rocket pod with 2.75 in rockets, or Hellfire missiles.
The Eurocopter’s X3 hybrid helicopter can cruise at 264 mph, considerably faster than a conventional helicopter, and demonstrates unique maneuverability. The X3 airframe is equipped with two turboshaft engines that power a five-blade main rotor system and two propellers which are installed on short-span fixed wings. The American Helicopter Society has presented its Howard Hughes Award for Outstanding Improvement in Helicopter Technology to Eurocopter’s X3 development team. Eurocopter advanced the hybrid configuration from concept to first flight in less than three years.
Boeing AH-64 Apache helicopter
Designed in the 1986, AH-64 Apache is arguably the most well known attack helicopter in existence. AH-64 is a four-blade, twin-engine attack helicopter with a tailwheel-type landing gear arrangement, and a tandem cockpit for a two-man crew. The Apache was designed to be an extremely tough survivor under combat.
Top Speed.........309 km/h
The Russian Ka-50 Black Shark helicopter
The Kamov Ka-50 (Chernaya Akula) series of attack helicopter was developed in the latter years of the Cold War.It is a high-performance combat helicopter with day and night capability, high survivability and fire power to defeat air targets and heavily armoured tanks armed with air defence weapons. Introduced in 1980, Ka-50 was entered into service in 1995 with a unit cost of approximately $20m.
Wing Span............7.3 m