Aerial cranes are helicopters used for lifting weights. they are one of the mobile cranes type.Also they are called sky cranes. These helicopters lift the loads by its long cables. They are used in remote and accessible places whereit is very hard to get any crane type.
These places like buildings tops, hill or mountain top and other places that cost a lot of money and time to get any other crane like telescopic or tower crane. This type of crane was first used in 1950 by a plane "Bell 47" but this type of lifting was not popular until 1960. after that the planes companies started to design special helicopters for lifting and moving loads which are called sky cranes. Then they were used in construction for loading many utilities on building roofs such as conditioning systems and water reservoirs and any other materials needed.
Sky cranes also can be used in fire fighting in far forests, the helicopter has a bucket attached to a rope connected to the plane. The helicopter fills the bucket from near lake or river and then empties the water on the fire from the above. They are very effective in this field as they also used in rescuing operations.
The aerial cranes are economical and quick in their work, but nothing is all good, they also have some disadvantages, like the load limit they can lift and the skills needed near this crane. The pilot has to be very clever to avoid terrible accidents. in the next video,aerial crane is used for rugged area.
