Why are there helicopters today?

The reasons why helicopters can be used today are as follows:

1. air traffic: helicopters can be used for air traffic, including air rescue, air sightseeing and air transportation. These helicopters are usually used for emergency missions or crossing areas with inconvenient ground transportation.

2. Police activities: Police or law enforcement agencies can use helicopters for surveillance, patrol and operational support. These helicopters can provide a broader vision and air superiority, and help to maintain public safety and combat crime.

3. Military training: Helicopters play an important role in military training. They can be used in tactical exercises, reconnaissance and weapons training. These helicopters are usually operated by the army or the Ministry of Defence.

4. Aerial photography: Helicopters are very common in aerial photography and media reports. They can be used to photograph ground activities, natural scenery or urban landscapes. And provide the required aerial perspective for movies, TV programs or advertisements.

5. Agricultural spraying: Helicopters can be used for crop spraying and seed sowing. In the agricultural field. They can effectively cover a large area of farmland and improve agricultural production efficiency.

6. Scientific investigation: Helicopters can be used for various scientific investigations and studies, such as environmental monitoring, geological survey and meteorological observation. These helicopters can provide more accurate survey data and real-time information.

7. Celebrations: In some celebrations, such as celebrations, exhibitions, competitions, etc. Helicopters can be used for aerial performances or to provide aerial lighting effects.

In a word, helicopters are widely used in different fields and play an important role today.