د "چورلکه" د بڼو تر مېنځ توپير

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'''چورلکه''' يو ډول آلوتکه ده چې وزرونه نه لري او يواځې د پره لرونکي څرخونو په مرسته چې په يوه يا څو افقي چورلاونو (rotors) پورې نښتې دي څرخېږي او همدا څرخي سېک هوا ته د چورلکې د پورته کېدلو سبب ګرځي. ددې لپاره چې چورلکې د نورو آلوتکو نه چې وزرونه يې ثابت دي او بېلې تخنيکي ځانګړنې لري نو له همدې کبله چورلکې د چورلاونکو ماشينونو په ټولګيو هم وېشل کېږي. consisting of two or more rotor blades. Helicopters are classified as rotorcraft to distinguish them from fixed-wing aircraft because the helicopter derives its source of lift from the rotor blades rotating around a mast. In fact, the word 'helicopter' originates from the Greek words elikoeioas (helical or spiral) and pteron (wing or feather).[1]
 
The primary advantages of the helicopter are due to its rotor, which provides lift in a vertical direction, giving it the ability to take off and land vertically and to maintain a steady hover in the air over a single point on the ground. This allows the helicopter to land and take off from pinnacles and confined areas that airplanes are not able to take off from, including heliports in the middle of busy cities and rugged terrain in remote areas. The helicopter is used for rescue, medical evacuation and as an observation platform. Other operations that involve the use of helicopters are fire fighting, tours, as an aerial crane, logging, personnel transport, electronic news gathering, law enforcement, military and for pleasure.