The helicopter is very useful aircraft because it can vertically take off and land in a very limited space, turn in any direction very quickly and hover in the air. It is powered by an engine on its top with blades which rotate at high speed to give the craft it lifts. The word “helicopter” is adapted from the French hélicoptère, coined by Gustave de Ponton d’Amécourt in 1861. It is linked to the Greek words helix/helikos (“spiral” or “turning”) and pteron (“wing”).
Top 10 Fastest Helicopters in the World
The top ten list of world’s fastest helicopter is given below:
1. Eurocopter X3
It is an experimental high-speed compound helicopter which was designed by Eurocopter (now Airbus Helicopters). It can achieve 255 knots (472 km/h; 293 mph) in level flight on 7 June 2013, setting an unofficial helicopter speed record.
An X³-based unpressurised compound helicopter called LifeRCraft is also among the projects planned under the European Union's €4 billion ($5.44 billion) Clean Sky 2 research program as one of two high-speed rotorcraft flight demonstrators.
2. CH-47 Chinook
It is an American twin-engine, tandem rotor heavy-lift helicopter named after the Native American Chinook people. It is used for troop movement, artillery placement and battlefield resupply. It is the fastest helicopter in the US inventory with a top speed of 170 knots (196 mph, 315 km/h).
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3. Mi-35M
It was developed by the Mil Moscow Helicopter Plant, and has been series produced at Rostvertol since 2005.It is a large helicopter gunship, attack helicopter and low-capacity troop transport with room for eight passengers with a maximum speed of 310km/h.
4. AW101 (EH101) Merlin
It is a military utility medium lift helicopter, manufactured by AgustaWestland (formerly EH Industries), a joint venture company formed by Agusta of Italy and the British company GKN. AgustaWestland is now wholly owned by Finmeccanica. It can fly at a maximum speed of 309km/h making it one of the fastest helicopters in the world.
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5. AgustaWestland AW139
It is a 15-seat medium-sized twin-engined helicopter developed and produced principally by AgustaWestland. It can fly at a maximum speed of 306km/h making it one of the fastest helicopters in the world.
6. NH90
It is a medium-sized, twin-engine, multi-role military helicopter and was developed in response to NATO requirements for a battlefield helicopter which would also be capable of being operated in naval environments. It can fly at a maximum speed of 300 km/h making it one of the fastest helicopters in the world.
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7. Ka-52 “Alligator”
It is a single-seat Russian attack helicopter with the distinctive coaxial rotor system of the Kamov design bureau and was designed in the 1980s and adopted for service in the Russian army in 1995. It can fly at a maximum speed of 300 km/h making it one of the fastest helicopters in the world.
8. Mi-28N Night Hunter
It is a modern attack helicopter designed to carry out search and destroy operations against tanks, armoured and un-armoured vehicles, and enemy personnel in combat, as well as low-speed airborne targets. It can operate night and day, and in adverse weather conditions. It can attain a maximum speed of 300km/h competing closely with the NH90 and Ka-52 Alligator helicopters, which offer the same speed.
9. Mil Mi-26 (Halo)
It is a Soviet/Russian heavy transport helicopter. Operated by both military and civilian operators, it is the largest and most powerful helicopter to have gone into series production. It can fly at a maximum speed of 295km/h making it one of the fastest helicopters in the world.
10. AH-64D Apache
It is an American four-blade, twin-turboshaft attack helicopter with a tail wheel-type landing gear arrangement, and a tandem cockpit for a two-man crew. It features a nose-mounted sensor suite for target acquisition and night vision systems. It can attain a maximum speed of 284km/h in hot day conditions.
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