Helikoptery

Helikoptery, often simply called helicopters, are a type of rotorcraft in which lift and thrust are supplied by horizontally spinning rotors. This unique design allows helicopters to take off and land vertically, hover in place, and fly forwards, backwards, and sideways. These capabilities distinguish them from fixed-wing aircraft.

The fundamental principle of helicopter flight relies on the rotation of the main rotor. The angle of the rotor blades, known as the angle of attack, can be adjusted collectively for ascent or descent, or cyclically to control direction. A tail rotor is typically used to counteract the torque produced by the main rotor, preventing the fuselage from spinning in the opposite direction. Some helicopters use a co-axial rotor system, where two main rotors spin in opposite directions, eliminating the need for a tail rotor.

Helicopters have a wide range of applications. They are extensively used in military operations for troop transport, attack missions, and reconnaissance. In civilian life, they are vital for medical evacuation, law enforcement, firefighting, search and rescue, and transporting goods and people to remote or inaccessible locations. Their versatility and ability to operate in confined spaces make them indispensable for many critical tasks.