basic outline of how helicopters achieve flight and there are various other factors which have not been mentioned here, such as different air to flow over each blade., accessed on 25/11/14, there are a variety of helicopters in the market and the. Times, Sunday Times (2014)The attack helicopters are able to strike more precisely than war planes that fly at higher altitudes. The helicopter flew over the sea and was able to land on the ship. The Sun (2012)Survivors of a helicopter crash that killed four oil workers have won millions of pounds in compensation. Times, Sunday Times (2012)Four naval ships and nine air force helicopters were ready to help stricken families. Helicopters are sometimes called choppers. The Sun (2013)Her feat will not be officially recognised if the helicopter was used. Times, Sunday Times (2016 fIVE.
A helicopter lifts up off of the ground and moves because of its rotors.
(countable) A helicopter is a type of aircraft.
It does not have wings, but has tw o or more long blades which rotate.
It is able to move in any direction, forward.
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This therefore makes any aircraft fly and helicopters are no different. Alexander Masters stuart: A Life Backwards (2005)Five people have been seriously hurt in a helicopter crash. This is known as increasing or decreasing the pitch angle of the rotor blades, which changes the amount of lift produced. As well as search and rescue, helicopters are useful for tourism, medical transport, fighting fires, aerial photography, military activity and more. The longest distance traveled in a helicopter without landing is 3562 km (2213 miles). Times, Sunday Times (2011)Two Apache attack helicopters provide cover. Times, Sunday Times (2016)One forthcoming wedding this summer sees the couple flying in via helicopter. The Sun (2015)Interest in polo and military helicopters an advantage.
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