ppt on working principles of quqadcopter

1. SEMINAR ON
QUADCOPTER
Presented by: Sunny Srivastava
Univ. Roll no: 1402940165
Submitted to: Mr. Subodh Sharma
(Associate Prof.)
Department of Mechanical Engineering
KIET, Ghaziabad (U.P.)

2. CONTENT OUTLINE
• Introduction
• Components
• Flight Controls
• Applications
• Advantages
• Disadvantages
• Conclusions

3. WHAT IS A QUADCOPTER????
 A Multirotor Helicopter
 Small Unmanned Aerial Vehicle
 Lifted and propelled by four rotors

5.  FRAME
 PROPELLERS
 MOTORS
 TRANSMITTER AND RECEIVER
 MICROCONTROLLER CIRCUIT
 POWER DISTRIBUTION BOARD
 ELECTRONIC SPEED CONTROLLER

6. • Structure that holds other components
• Strong and light weight
• Usually made of : Carbon fibres , Aluminium, MDF
• Parts: Centre plate, four arms, motor brackets

7. Quadcopter frame

8. THE PROPELLERS
 4 Propellers
• 2 Pushers (CW)
• 2 Pullers (CCW)
 Works on Bernoulli’s theorem

9. WHY PUSHERS AND PULLERS???

10. PRINCIPLE OF UPLIFTMENT
 Bernoulli’s Principle for Streamlined bodies

11. MOTORS
• Brushless DC motors (BLDC)
• Less weight
• High efficiency

12. TRANSMITTER & RECEIVER
 2.4 Ghz, 35 Mhz,72 Mhz  4 Channel system

13. CONTROL BOARD
 BRAIN of the quadcopter
 Connected to receiver and ESC
 e.g.: APM 2.8, CC3D, KK2, 3DR pixhawk,etc.
 Contains Gyrosensor, Accelerometer, etc.

14. QUADCOPTER CONTROL BOARD

15. ELECTRONIC SPEED CONTROLLER
• Converts 2-phase battery current to 3-phase power
• Regulates the speed of motors

16. BATTERY
 LiPo batteries
 Light weight
 NiMH batteries are also used

17. POWER DISTRIBUTION BOARD
 Supplies power to the motors  Connected to the ESC

18. FLIGHT CONTROLS OF
QUADCOPTER
FOUR BASIC MOTIONS
 THROTTLE (UPLIFT)
 PITCH
 YAW
 ROLL

20. MECHANICS FOR PITCH, YAW AND
ROLL MOTIONS

21. APPLICATIONS
 Surveillance by MILITARY forces
 Agricultural surveillance
 Sending parcels using quadcopters
 Capturing photos and videos of events
 Mapping
 Inspection of tall buildings

22. ADVANTAGES
 4 small rotors have smaller diameter than one large helicopter rotor
 No need of tail rotor which generates no lift
 Simple to design and build
 Can traverse through difficult terrains
 Cheaper and low maintenance cost
 Generates negligible pollutions

23. DISADVANTAGES
 Less weight carrying capacity
 Battery power may be restricted and requires frequent charging
 Control can be hacked by the enemies

24. CONCLUSION
Imperative existence in the coming future. They will be
seen taking larger roles for a variety of jobs including
business.
Agriculture is predicted to be the dominant market for the
UAV’s.
Military is also involving a large role of these drones for
the surveillance of the terrains where the soldiers can not
reach easily.
They have few demerits but these can be rectified.
Hence, quadcopters have an exemplarily bright future, but
it depends whether we use it constructively or
destructively.

25. THANK YOU