1. Structure and Functions
1.1. Positioning
1.1.1. Global Positioning System (GPS)
1.1.2. Navigation system
1.2. Propulsion
1.2.1. Electronic Speed Controller
1.2.2. Energy sources
1.2.2.1. Battery
1.2.2.1.1. "Lithium Polymer" (Li-Po)
1.2.2.2. Others
1.2.2.2.1. Solar energy
1.2.3. Motor
1.2.3.1. rotates propellers
1.2.4. Printed Circuit Board
1.2.5. Power Distribution Board
1.3. Controlling
1.3.1. Remote controls
1.3.1.1. Mobile phones
1.3.2. Transmitter and receiver
1.4. Outer Structure
1.4.1. Landing Gear
1.4.2. Frame
1.4.2.1. act as a skeleton to connect all components
1.4.2.1.1. Protection
1.4.2.2. Water-proof motor frame
1.4.3. Prop guards around the propellers
1.4.4. Propellers
1.4.4.1. Wood
1.4.4.2. Plastic
1.4.4.2.1. Most popular
1.4.4.3. Carbon fiber
1.4.4.3.1. Strongest
1.4.5. Shell
1.4.5.1. outmost cover
1.4.6. LED
1.4.6.1. indicate where the drone is at night
1.5. Inner Structure
1.5.1. Dampeners
1.5.1.1. minimize vibrations
1.5.2. Sensors
1.5.2.1. Accelerometer
1.5.2.1.1. measure linear acceleration
1.5.2.2. Barometer
1.5.2.2.1. measure air pressure
1.5.2.3. Gyroscope
1.5.2.3.1. measure angular acceleration
1.6. Feature
1.6.1. Cameras
1.6.1.1. take pictures
1.6.1.2. Record videos
1.6.1.2.1. "First Person View"
1.6.1.2.2. Live videos
2. Advantages (Applications)
2.1. Improve flight experience
2.1.1. Avoid eyes burning by the Sun
2.2. Aerial photography
2.2.1. Amazing photo and video quality
2.2.1.1. Some drones come equipped with a 4K camera and 1080p quality of shooting
2.2.1.1.1. E.g. DJI Inspire 1 or Phantom 3
2.2.2. Take selfies from a higher perspective
2.2.2.1. More people could fit into the picture
2.2.2.2. Get a real aerial view
2.3. For military uses
2.3.1. Bomb detection
2.3.1.1. Aware of unexploded bombs and save lives
2.3.2. Surveillance
2.3.2.1. Conduct regular surveys in order to ensure protection of the people and the place
2.3.2.2. Reduces manual labour and get a wider field of view
2.3.3. Air strikes
2.3.3.1. E.g. President Obama once confirmed that they used drones regularly to attack militants in the tribal areas of Pakistan
2.4. Filming and Journalism
2.4.1. Filmography with drones becomes popular in movie industry
2.4.1.1. E.g. James Bond's Skyfall/ Game of Thrones
2.4.2. Easily get reach to the places where reporters cannot reach
2.5. Disaster management
2.5.1. Collect information and pictures of the debris working in a specific area with powerful cameras
2.5.1.1. Get clearer footages of the accident site without having to spend a lot of money on helicopters
2.5.1.2. Able to penetrate into places that would be difficult for helicopters to enter and provide close-up views as camera drones are small in size
2.6. Geographic mapping
2.6.1. Available for capturing imagery for 3D geographic mapping
2.7. Agriculture
2.7.1. Report significant improvements and depth analysis of crop yields for large scale farmers
2.8. Wildlife monitoring
2.8.1. Prevent poaching
2.8.2. Help study animal's behaviour and analyse their patterns without affect or disturb them
3. Disadvantages (Limitations)
3.1. Flight actions are more difficult when using a camera and remote system
3.2. Camera footage is not as reliable as the naked eye
3.3. Legal concerns
3.3.1. Invasion of privacy through surveilling
3.3.1.1. Because camera drones can carry high-power zoom lenses, night vision and see-through imaging
3.3.2. Not everyone is allowed to use for photography
3.4. Battery life
3.4.1. Battery power could be limited
3.5. Safety
3.5.1. Many questions regrading regulation and safety
3.5.2. A threat for passenger aircraft
3.5.3. Even the professionals have to prove their competency to use drones for aerial photography
3.6. law
3.6.1. need a FAA Drone Pilot License
4. Basic Information
4.1. Types
4.2. Brands
4.2.1. DJI
4.2.2. 3DR( 3d Robotics )
4.2.3. Yuneec
4.2.4. ZEROTECH
4.2.5. Parrot
4.2.6. Xiaomi
4.2.7. Wingsland
4.2.8. GoPro
4.2.9. Walkera
4.2.10. Hubsan
4.2.11. Upair One
4.2.12. Aton
4.2.13. Autel
4.3. Popularity
4.4. Cost
4.5. Definition
4.5.1. Drones with cameras
4.5.2. they are the driving factor of drones all around the globe