This document is a presentation on drones by a group called Omega. It introduces the group members and defines drones as unmanned aerial vehicles controlled remotely or autonomously. It then provides a brief history of drones, discusses Kelvin's idea of insect wing aerodynamics, explains the working principles of lift from wing movement, and applications of drones such as search and rescue, sports filming, and armed attacks. It concludes by discussing advantages and disadvantages of nano drones specifically.

2. WELCOME TO OUR
PRESENTATION

3. GROUP NAME: OMEGA
GROUP MEMBERS:
ABUBAKAR SIDDIQUE MONIR
ID:163-15-8318
MD.JAHID HASAN MIAH
ID:163-15-8529
SAHARIAR ISLAM
ID:163-15-8426
MST.SIRAZAM MANIRA
ID:163-15-8466

4. TOPIC NAME: MECHANISM OF“DRONE”

5. INTRODUCTION
• Drones are also known as UAV: Unmanned Aerial Vehicle
• It is an aircraft without an onboard pilot, thus the name ‘unmanned’ aerial
vehicle.
• It’s flight is either pre-defined or controlled autonomously by computers or
under the remote control of a pilot on the ground.

6. BRIEF HISTORY OF UAV/DRONE
• In 1916, A. M. Low’s “Aerial Target” was one of the first unmanned aerial
vehicle
• The birth of U.S. UAVs began in 1959 when United States Air Force officers
were concerned about losing pilots over hostile territory and they thought of
unmanned flights.
• In the year 1964, U.S Navy initiated America’s highly classified ‘Red Wagon’
UAVs into their first combat missions of the Vietnam war.

7. KELVIN’S IDEA :
 KELVIN’S IDEA is from the flapping wing aerodynamics.
Kelvin’s circulation theorem, the net circulation around insect body is zero.
 ordinary insects, this build-up of high lift coefficient is delayed.
 One species of insects, ENCASIA FORMOSA , which avoid any delay in
built up of maximum lift.

8. WORKING PRINCIPLE :
1. Air comes straight at the wing :
 Air comes straight at the wings, bends around it and leaves straight behind the wing.
 There is no net action on the air so there can be no lift.

9. 2. Air passing over the wing.
Fig. shows the stream line as in the action.
 To generate lift, a wing must divert air down.
The air passes over the wing and is bent down.
As newton’s law suggests, the wing must change something of air to
get lift.
Changes in the airs momentum will result in forces on the wing.

10. UNSTEADY AERODYNAMICS
The most important unsteady aerodynamic effects are

11. CLAP AND FLING MECHANISM

12. WING ROTATION OVER ONE FLAPPING CYCLE

13. APPLICATIONS OF UAV/DRONE
• There are many different applications of UAVs. Some of the
applications of UAVs are below .
i. Search and rescue
ii. Disaster relief
iii. Sports
iv. Commercial aerial surveillance
v. Commercial and motion picture filmmaking
vi. Armed attacks

14. SEARCH AND RESCUE
• During the 2008 hurricanes that struck Louisiana and Texas, Micro UAVs, such
as the ‘Aeryon Scout’, have been used to perform search for missing persons.
• ‘Predators’, operating between 18,000–29,000 feet above sea level, performed
search and rescue and damage assessment.

15. SPORTS
• Drones were used in the 2014 Winter Olympics in Sochi for filming skiing and
snowboarding events
• Some advantages of using unmanned aerial vehicles in sports are that they allow
video to get closer to the athletes, they are more flexible than cable-suspended
camera systems.

16. ARMED ATTACKS
• Armed ‘Predators’ were first used in late 2001 from bases in Pakistan and
Uzbekistan, mostly aimed at assassinating high profile individuals (terrorist leaders,
etc.) inside Afghanistan
• A Predator based in a neighboring Arab country was used to kill suspected al-
Qaeda terrorists in Yemen on November 3, 2002. This marked the first use of an
armed Predator as an attack aircraft outside of a theater of war such as
Afghanistan.

17. ADVANTAGES AND DISAVANTAGES OF NANO
DRONE
ADVANTAGES
 Nano drones are much cheaper to maintain than traditional drones.
 Nano drones can easily recover from in flight collisions.
 Nano drones can save more lives in natural disaster because their small size and ability
to fly makes them very maneuverable.
 Nano drones can save soldiers in combat positions by scouting the enemy territory to
make sure it is safe to procede.
Low mass , low power requirements, High lift and low landing speed.

18. DISADVANTAGES
 Nano drones could be used by enemies to spy on other nations possibly
revealing top secret information for an enemy.
 They are not self powered.
 cannot launch from ground.
 There chances of air bag buckling.

19. CONCLUSION
 MICRO OR NANO air vehicles are new development of the technology by which a
variety of operations are done.
 Simple flapping of the wings does not generate sufficient lift.
 So special mechanism is designed to get the required lift using weis fogh’s model.
Flapping mechanism have more lift compared to fixed wing mechanism.
It can increase the lift without increasing vehicle speed.

20. THE END
THANK YOU