Invention of the Helicopters
Renaissance artist Leonardo da Vinci sketched an idea for a helical air scew”- a craft that can spin in air in 1490. However, Frenchman Paul Cornu achieved the first successful helicopter in 1906. In 20 seconds the craft lifted off the ground.
Helicopter can do that most planes can’t do:
- Take off and land vertically
- fly backwards
- fly sideways
Air rescue by Helicopters:
Rescue helicopters saved more than 3 million lives. This helicopter’s can reach inaccessible, remote areas that other vehicles can’t.
To fly a Helicopter:
- First start the engine and ensure that the roter blades are whirring at a flat pitch ie. with no angle.
- Raise a lever at your side(the collective control stick) to increase the angle(pitch) of both blades. The two blades produce a force that force the air downwards and create an upwards force which lifting the helicopter vertically up.
- By adjusting the cyclic pitch(a control stick just in front of you) to vary the angles of the rotor blades can used to fly forwards,backwards and either sides.
- By using pedals on the cockpit floor we can control the pitch of the tail rotor(essential fro straight flight).
Uses of Helicopters:
- search and rescue
- air ambulance
- aerial crane (to carry heavy loads to high or inaccessible places)
- law enforcement
- aerial firefighting (carrying loads of water to dump o wilderness fires)
- armed forces (used to attack ground-based targets wit missiles)
- aerial photography
- traffic control
Board a VIP’s:
The US president traveled in Sikorsky VH-3D Sea King Helicopter. “Marine One” is the Helicopter’s call sign when the president is on board.
Pope Benedict XVI has a pilot’s licence and flies the papal helicopter from the Vatican to his summer residence, Castel Gandolfo.