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Design and Development of Quad Copter
Department of Production Engineering, K.I.T.'s COEK Page 1
INDEX
SR. NO.
TITLE PAGE NO.
1 ABSTRACT 4 2 INTRODUCTION 6 3 PROJECT OVERVIEW 8 4 SCOPE 10 5 LITERATURE REVIEW 12 6 RECENT DEVELOPMENT 15 7 METHODOLOGY 17 7.1 BASIC MATERIAL 18 7.2 BLOCK DIAGRAM 18 7.3 WORKING PRINCIPLE 19 7.4 MOTOR ROTATION 20 7.5 CIRCUIT DIAGRAM 22 8 MATERIALS 23 8.1 FRAME 24 8.1.1 REASONS TO CHOSE ALUMINUM 25 8.2 MOTOR MOUNT BASE PLATES 27 8.2.1 DESIGN 28 8.3 CENTER PLATE 29 8.3.1 DESIGN 30 8.4 BLDC MOTOR 31 8.4.1 MOTOR DRAWING 32 8.4.2 WORKING PRINCIPLE 32 8.4.3 THRUST CALCULATION 33 8.5 ESC 34 8.5.1 WORKING PRINCIPLE 35 8.6 PROPELLERS 36 8.7 TRANSMITTER 37 8.7.1 TRANSMITTER KEYS &COMBINATION 38 8.8 CAMERA 40 8.8.1 CAMERA ACCESSORIES 41 8.9 FLIGHT CONTROLLER 42 8.10 BATTERY 43 8.11 LANDING GEAR 44 8.11.1 DESIGN 45 9 FLIGHT CONTROLS 46 9.1 MOTIONS 47 9.2 TORQUE 48 9.3 YAW 49 9.4 ROLL 50 9.5 PITCH 51
10 BILL OF MATERIALS 52 11 FUTURE SCOPE AND SUMMARY 54 12 CONCLUSION 57 13 REFERRENCE 59
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LIST OF FIGURES
SR. NO.
TITLE PAGE NO.
7.1 WORKING PRINCIPLE - BLOCK DIAGRAM 18 7.2 WORKING PRINCIPLE – RECEIVER & FLIGHT CONTROL 19
7.3.1 MOTION OF MOTORS (TAKEOFF) 20 7.3.2 MOTION OF MOTORS (LANDING) 20 7.3.3 MOTION OF MOTORS (FORWARD) 21 7.3.4 MOTION OF MOTORS (BACKWARD) 22 7.5 CIRCUIT DIAGRAM 23 8.1 ALUMINUM FRAM 25 8.2 MOTOR MOUNT BASE PLATES 27
8.2.1 DESIGN 28 8.3 CENTER PLATES 29
8.3.1 DESIGN 30 8.4 BLDC MOTOR 31
8.4.1 MOTOR DRAWING 32 8.5 ESC 34
8.5.1 WORKING PRINCIPLE – ESC 35 8.6 PROPELLERS 36 8.7 TRANSMITTERS 37
8.7.1 TRANSMITTERS KEYS & COMBINATIONS (RUDDER) 38 8.7.2 TRANSMITTERS KEYS & COMBINATIONS (ELEVATOR) 38 8.7.3 TRANSMITTERS KEYS & COMBINATIONS (AILERON) 39 8.8 CAMERA 40
8.8.1 CAMERA ACCESORIES 41 8.9 FLIGHT CONTROLLER 42 8.10 BATTERY 43 8.11 LANDING GEAR 44
8.11.1 CROSS LEGS DIMENSIONS 45 8.11.2 CROSS LEGS WITH REFERENCE TO FRAME 45
9.1 FLIGHT CONTROL MOTIONS 47 9.2 FLIGHT CONTROL - TORQUE 48 9.3 FLIGHT CONTROL - YAW 49 9.4 FLIGHT CONTROL - ROLL 50 9.5 FLIGHT CONTROL – PITCH 51 12.1 FINAL IMAGE – QUADCOPTER 58
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LIST OF TABLES
TABLE
NO.
TABLE NAME PAGE NO.
1 BILL OF MATERIAL 53
Design and Development of Quad Copter
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1. ABSTRACT
Design and Development of Quad Copter
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1. ABSTRACT
The military use of unmanned aerial vehicles (UAVs) has grown because of
their ability to operate in dangerous locations while keeping their human operators at
a safe distance. The larger UAVs also provide a reliable long duration, cost effective,
platform for reconnaissance as well as weapons. They have grown to become an
indispensable tool for the military. The question we posed for our project was whether
small UAVs also had utility in military and commercial/industrial applications. We
postulated that smaller UAVs can serve more tactical operations such as searching a
village or a building for enemy positions. Smaller UAVs, on the order of a couple feet
to a meter in size, should be able to handle military tactical operations as well as the
emerging commercial and industrial applications and our project is attempting to
validate this assumption.
To validate this assumption, my team considered many different UAV designs
before we settled on creating a Quadcopter. The payload of our Quadcopter design
includes a camera and recording of video that will allow us to watch it from the
Quadcopter on a laptop. We have just finished the project but we will continue to
work on the Quadcopter to improve performance and controllability.
Our project has verified that it is possible to build a small-scale Quadcopter
that could be used for both military and commercial use. Our most significant
problems to date have been an ambitious development schedule coupled with very
limited funds. These constraints have forced compromise in components selected and
methods used for prototype development. Currently our Quadcopter has achieved
stable untethered flight as well as autonomous altitude hold. Although there are many
enhancements that we could do to the design, we have proven that it is possible to
produce a small scale UAV that performs functions of interest to the military as well
as commercial/industrial applications.
Design and Development of Quad Copter
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2. INTRODUCTION
Design and Development of Quad Copter
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2. INTRODUCTION
Quad copter is an aerial vehicle which is operated to fly independently. It is a
type of a small representation of Unmanned Aerial Vehicle(UAV).A Quad Copter,
also called a Quad rotor helicopter, is a multicopter that is lifted and propelled by four
motors.
Quad Copters are classified as rotorcraft, as opposed to fixed-wing aircraft,
because their lift is generated by a set of revolving motors. Control of vehicle motion
is achieved by altering the rotation rate of one or more rotor discs, thereby changing
its torque load and thrust/lift characteristics.
Summary of goals
Determine a suitable quad copter RC UAV design.
Determine suitable parts and components to be used for the design.
Select a camera system to mount on the quad copter.
Determine a method to Record video to the controller.
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3. PROJECT OVERVIEW
Design and Development of Quad Copter
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3. PROJECT OVERVIEW
The ultimate goal of our project is to record an aerial video which can be
processed and stored. This technology can be used for search and rescue, firefighting,
law enforcement, military, and news reporting by being able to deploy aerial
correspondence much faster than conventional helicopters.
The end result of producing a digital video signal will allow for future expansions
such as UAV sentience, target tracking and video compression. There are many
components to this project and we must decide which areas will developed ourselves
and which areas will be implemented with 3rd party products.
The quad copter chassis and controller system consists of everything needed to
build and control the flying platform in which the camera will be mounted. This
includes a frame, DC motors, power supply, rotors, flight control circuit board, flight
control software, and an RC controller.
The video recording system consists of the components that record, store and
display the video. The digital video analysis system will take the raw video data,
convert it to digital if necessary, and load it into a computer. This system will need a
memory card, a computer and video processing software, if necessary.
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4. SCOPE
Design and Development of Quad Copter
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4. SCOPE
Since as early as 1920, multicopter vehicles have been designed, built, and
used to experiment with aerial vehicle designs. The quadrotor or quadcopter design is
one example of the many prototypes produced. This particular design uses four
identical rotors mounted symmetrically; the result is a very stable flight platform. The
goal of this project is to use the stable aerial quadcopter design for practical uses by
attaching a live feed camera to a small-scale, remote controlled, quadrotor, unmanned
aerial vehicle (UAV). The video received will be transmitted by digital or analog
signals. If the captured video is an analog format it must be converted to digital video
after transmission. With a digital signal, the video can be easily processed for analysis
and storage.
Scope in present Aerospace Industry -
Quadcopters are uninhabited or unmanned aerial vehicles which are widely
being used in modern aerospace industry. The wide area of operation and high
maneuverability makes quadcopter even more useful. Quadcopters are used in
scientific research, geological survey, aerial photography, weather sensing, spying,
and reconnaissance. Quadcopters are not limited to the above specified practices.
They are light in weight, maneuverable, easy to build, easy to deploy, portable, and
can be extended and optimized as per the specific task.
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5. LITERATURE REVIEW
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5. LITERATURE REVIEW
Etienne Oehmichen was the first scientist who experimented with rotorcraft
designs in the 1920s. Among the six designs he tried, his second multicopter had four
rotors and eight propellers, all driven by a single engine. The Oehmichen used a steel-
tube frame, with two-bladed rotors at the ends of the four arms. The angle of these
blades could be varied by warping. Five of the propellers, spinning in the horizontal
plane, stabilized the machine laterally. Another propeller was mounted at the nose for
steering. The remaining pair of propellers was for forward propulsion. The aircraft
exhibited a considerable degree of stability and controllability for its time, and made
more than a thousand test flights during the middle 1920s. By 1923 it was able to
remain airborne for several minutes at a time, and on April 14, 1924 it established the
first-ever FAI distance record for helicopters of 360 m.Later, it completed the first 1
kilometer closed-circuit flight by a rotorcraft.
After Oehmichen, Dr. George de Bothezat and Ivan Jerome developed this
aircraft, with six bladed rotors at the end of an X-shaped structure. Two small
propellers with variable pitch were used for thrust and yaw control. The vehicle used
collective pitch control. It made its first flight in October 1922. About 100 flights
were made by the end of 1923. The highest it ever reached was about 5 m. Although
demonstrating feasibility, it was, underpowered, unresponsive, mechanically complex
and susceptible to reliability problems. Pilot workload was too high during hover to
attempt lateral motion.
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Convertawings Model A Quadrotor (1956) was intended to be the prototype
for a line of much larger civil and military quadrotor helicopters. The design featured
two engines driving four rotors with wings added for additional lift in forward flight.
No tail rotor was needed and control was obtained by varying the thrust between
rotors. Flown successfully many times in the mid-1950s, this helicopter proved the
quadrotor design and it was also the first four-rotor helicopter to demonstrate
successful forward flight. Due to a lack of orders for commercial or military versions
however, the project was terminated. Convertawings proposed a Model E that would
have a maximum weight of 42,000 lb (19,000 kg) with a payload of 10,900 lb (4,900
kg).
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6. RECENT DEVELOPMENT
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6. Recent Development
Recent quad rotors or quadcopter which are being manufactured and used in
aerospace industry are listed below:
·
Aermatica Spa's Anteos is the first rotary wing RPA (remotely piloted aircraft)
to have obtained official permission to fly (Permit To Fly) issued in the civil airspace,
by the Italian Civil Aviation Authority (ENAC), and will be the first able to work in
non-segregated airspace.
·
AeroQuad is an open-source hardware and software project which utilizes
Arduino boards and freely provides hardware designs and software for the DIY
construction of Quadcopters.
ArduCopter is an open-source multicopter UAV. Based on Arduino, it
supports from four to eight motors, as well as traditional helicopters, and allows fully
autonomous missions as well as RC control.Open Pilot is a model aircraft open-
source software project.
Parrot AR.Drone is a small radio controlled quadcopter with cameras attached
to it built by Parrot SA, designed to be controllable with iOS or Android devices.
Parrot AR.Drone 2.0 carries a HD 720P camera and more sensors, such as altimeter
and magnetometer.
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7. METHODOLOGY
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7. METHODOLOGY
7.1 BASIC MATERIALS REQUIRED
1. KK Multicopter v 5.1.2
2. Brushless DC Motors
3. 1.2 GHz Transmitter and receiver
4. Electronic Speed Controller
5. Bullet Connectors
6. Propellers
7. Gyroscope
8. Accelerometer
9. A strong base to hold the structure (Frame)
7.2 BLOCK DIAGRAM
Fig. 7.1 Working Principle – Block Diagram
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As the figure above clearly shows block diagram as to how the quadcopter
actually works. It can be seen that the micro controller ATMEGA 328 is at the center.
The flight controller includes this MCU ATMEGA 328 which is connected to ESC –
Electronic Speed Controllers.
7.3 WORKING PRINCIPLE
Quadcopter is a device with a intense mixture of Electronics, Mechanical and
works mainly on the principle of Aviation.
The Quadcopter has 4 motors whose speed of rotation and the direction of
rotation changes according to the users desire to move the device in a particular
direction (i.e Takeoff motion, Landing motion, Forward motion, Backward motion,
Left motion, Right Motion. )
The rotation of Motors changes as per the transmitted signal send from the 6-
Channel transmitter. The program for which is written in the AT-MEGA 328 chip.
The signal from microcontroller goes to ESC’s which in turn control the speed
of motor.
Fig. 7.2 Working Principle - Receiver and Flight Control
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7.4 MOTOR ROTATIONS
Fig. 7.3.1 Working Principle – Motion of Motors (Takeoff)
This Figure above shows the motion of motors for Takeoff. It is clearly seen
that front left motor & rear right motor rotates in clockwise direction and front right
motor & rear left motor rotates in anticlockwise direction. The takeoff motion
happens when throttle is positively increased.
Fig. 7.3.2 Working Principle – Motion of Motors (Landing)
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The direction of motors while in Landing is clearly shown in the figure above. It is
same as that of takeoff motion but here the throttle that is given is negative. It means
that when throttle is decreased gradually, the quadcopter gradually lowers its altitude
and eventually touches ground.
Fig. 7.3.3 Working Principle – Motion of Motors (Forward)
From the figure above, it is clearly understood that when quadcopter is in
forward motion the front motors decreases their speed and rear motors increase their
speed.
The direction of rotation remains the same. It doesn’t get changed whilst in
flight.Now because of this the quadcopter tilts from forward region and the rear
region of the quadcopter gets lifted up. Hence the forward motion takes place.
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Fig. 7.3.4 Working Principle – Motion of Motors (Backwards)
When motor speed of front is increased and the speed of rear motors is
decreased, then the quadcopter tilts in rear direction and the front region gets lifted up.
This causes the backward motion of quadcopter. It is to be noted that the
direction of the motor remains the same while in flight.
The only way to change motor direction is to land it and make changes in
motor bullet connectors to electronic speed controller.
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7.5 CIRCUIT DIAGRAM
Fig. 7.5 Circuit Diagram
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8. MATERIALS
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8.1 FRAME
Fig. 8.1 Aluminum Frame
Material – Aluminum
Shop – Novel Aluminum, Bagal Chowk
Shape – X
Angle between Landing Gear and Frame – 40 Degrees
Nuts & Bolts – M3 (3x40mm Center, 3x30mm Side)
Raw material length–10 Foot (4 Bar 10 In. each)
Welding – Argon Welding (Udyamnagar)
Landing Gear – 15 cm
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8.1.1REASONS TO CHOOSE ALUMINIUM
Aluminum is a fine material for multis and is widely used. Aluminum is easy
to fabricate and can often be bent back into shape after crashes. Aluminum has been
used in aircraft since WW2, and is still being used today. Even the most advanced
aircraft use a significant amount of aluminum. It's also a great material for Aero
Quads.
Aluminum is an excellent electrical conductor though, and therefore adequate
care must be taken to not short out your electronics, or more importantly your Li-
Po.Because it is a homogeneous material three dimensional shapes can be machined
from it as well, something that can't really be done with composites like carbon fiber
or fiberglass.
It's readily available and fairly inexpensive. It's also easy to machine, as
carbide and steel tools can machine it fairly easily. There are a fair range of different
aluminum alloys available, and although they generally have similar densities and
stiffness's, the strength can vary greatly. Although 6061 is frequently referred to as
'Aircraft grade' it isn't used on modern aircraft at all and with a tensile strength of just
30 ksi, it’s not very strong.
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8.2MOTOR MOUNT BASE PLATES
Fig. 8.2 Motor Mount Base Plates
Material – Acrylic
Pieces – 4
Diameter– Center Hole – 8mm & Side holes – 3mm
Length – 40mm
Thickness – 2mm
Number of holes – 7
Radius – 12mm
Designing Software – AutoCAD & CorelDraw
Cutting Method – Laser Cutting
Nuts & Bolts - 3x30 mm
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8.2.1DESIGN
Fig. 8.2.1 Motor Mount Base Plates Design in CorelDraw
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8.3CENTER PLATE
Fig. 8.3Center Plates
Centre Plate Size – 10x10 cm
Quantity – 2
Material – Acrylic
No. of holes – 1 Center, 8 Sides
Design Software – CorelDraw & AutoCAD
Cutting Method – Laser Cutting
Nuts & Bolts – 3x40 mm
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8.3.1 DESIGN
Fig. 8.3.1 Center Plate CorelDraw Design
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8.4 BLDC Motor
Fig. 8.4 BLDC Motor
Manufacturer – Phantom
Type – Brushless DC (Out runner)
Shaft Diameter – 4mm
Shaft Length: 49mm
Ratings – 930 KV , 6000 - 8000 rpm , 12 – 14 Volt
Thrust – 850 to 950 Grams using 10 X 4.5 (Inch X Pitch) Propellers
Connectors – Gold Bullet
Dimension: 28X24mm
Shaft: 8.0mm
Weight: 56gr (with Prop Adapter)
Standard Current: 15-25A Max Current : 30A
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8.4.1MOTOR DRAWINGS
Fig. 8.4.1 BLDC Motor Drawings
8.4.2WORKING PRINCIPLE – BLDC MOTOR
A brushless motor is constructed with a permanent magnet rotor and wire
wound stator poles. Electrical energy is converted to mechanical energy by the
magnetic attractive forces between the permanent magnet rotor and a rotating
magnetic field induced in the wound stator poles. There are three electromagnetic
circuits connected at a common point.
Each electromagnetic circuit is split in the center, thereby permitting the
permanent magnet rotor to move in the middle of the induced magnetic field. Most
BLDC motors have a three-phase winding topology with star connection. A motor
with this topology is driven by energizing 2 phases at a time.
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The static alignment is that which would be realized by creating an electric
current flow from terminal A to B, noted as path 1.The suggested magnetic alignment
is used only for illustration purposes because it is easy to visualize. In practice,
maximum torque is obtained when the permanent magnet rotor is 90 degrees away
from alignment with the stator magnetic field.
8.4.3THRUST CALCULATION
The Thrust we calculated is 850 – 950 grams.Method Used – Digital
Weighing Machine. Setting the digital weighing machine to zero we started the
motors and began revolving in anticlockwise direction.
The reason for anti-clockwise direction is that, we don’t want the Quad to be
lifted in air. Instead, we want it to apply force on weighing machine.So when Quad
Copter applies force on weighing machine, the display unit shows 850- 950 grams on
Full Throttle.
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8.5ELECTRONIC SPEED CONTROLLER
Fig. 8.5 Electronic Speed Controller
It has Power requirement of 25 Ampere. ItIncludes Microcontroller and
MOSFET Signal transmitted from transmitter is converted by Pulse Width
Modulation. The working of electronic speed controller is explained below.
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8.5.1 WORKING
Fig. 8.5.1 Working – ESC
Signals are directly sent by the transmitter remote control to receiver and then
sent to ESC. Transmitter is used by the user to control the quad manually. If the user
changes the input, transmitter sends radio signals to receiver and receiver changes
these signals to PWM signals. These PWM signals are sent to ESC’s causing the
change in the speed of the motors.
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8.6 PROPELLERS
8.6 PROPELLERS
Material – Plastic & Nylon Combination
Pitch – 10 X 4.5 (Inch x Pitch)
Quantity – 4
Color Coding –
Orange – Rear
Black – Forward
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8.7TRANSMITTER
Fig. 8.7 Transmitter
Channel – 6
Frequency – 2.4 GHz
Manufacturer – Fly Sky
Channel 5 – Auto Stability
Channel 6 – Free for GPS
Transmitting Range – 1 Km
Power – 12 Volt
Source – AA Batteries
Our Transmitter is Mode 2, where left hand side is throttle unlike Mode 1, where left
right hand side is throttle (European)
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8.7.1TRANSMITTER KEYS & COMBINATIONS
Fig. 8.7.1 Transmitter Keys & Combinations – Rudder
It is clearly seen in the above figure, the left joystick in transmitter is for
Throttle in vertical direction (up and down) and Rudder in horizontal direction (left
and right). This motion is related to Yaw motion of quadcopter which is explained
later.
Fig 8.7.2 Transmitter Keys & Combinations – Elevator
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From the figure above it is clearly seen that right joystick in the transmitter is
for Elevator motion in vertical direction ( up and down ). This motion is related with
Roll motion of quadcopter.
Fig. 8.7.3Transmitter Keys & Combinations – Aileron
From the figure above, it is understood that right joystick of transmitter is for
Aileron motion in horizontal direction (left and right). The aileron motion is
concerned with Pitch motion of quadcopter.
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8.8 CAMERA
Fig. 8.8 Digital Camera - Recording
5 MP Camera
1280x960 Pixels Camera
Rechargeable Camera
Mini Camera
Size: 4.6cm x 3cm x 1.5cm – (1.81inch x 1.18inch x 0.59inch)
Format: AVI (video), JPG (picture), WAV (sound)
Video compression: M-JPEG
Charging time: About 3 hours
Video resolution: 720*480 @ 30fps
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8.8.1 CAMERA ACCESORIES
Fig. 8.8.1 Camera Accessories
The Accessories that are provided with the camera are:
USB charging cable
Portable Camera Charging unit
Neck Hanging Belt
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8.9 FLIGHT CONTROLLER
Fig. 8.9 Flight Controller
Manufacturer – Hobby King KK
Version – 2.1.5
Weight: 21 gram
MCU – ATMEGA 328
Gyroscope & Barometer – MPU 6050
Accelerometer – ADXL 35
Auto-level: Yes
It Includes Gyroscope and Accelerometer with hybrid sensors and algorithms.
Gyroscope detects which side is down.Accelerometer accelerates and de-accelerates
motor speed.Flight Controller is used for Auto Stability.
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8.10 BATTERY
Fig. 8.10 Li-Po Battery
Type – Li-Po (LithiumPolymer)
12 Volt
3 cells
2.2 Ampere
2200 MAh
Selection Method –
1) 12 Volt for propeller size 10 X 4.5 Inch X Pitch
2) 8 Volt for propeller size 8 X 5 Inch X Pitch
It is to be noted that Thrust is directly proportional to Battery Power Rating.
(Thrust ~ Battery Power)
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8.11LANDING GEAR
Fig. 8.11 Landing Gear
For Shock Absorption – Smiley Balls
Material – EPP – High Density Foam
Attachment - Stuck to landing gear (Legs) by Cyanoacrylate
Cross Legs – 4
Angle(Between Horizontal plane and cross legs) – 40 Degrees
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8.11.1 DESIGN OF LANDING GEAR
Fig. 8.11.1 Cross legs dimensions
The aluminum bar of 16.5 centimeters is chosen. It is then cut according to the
diagram shown above. This is required for proper balance of quadcopter when it ia on
the ground. The bar is cut from top and bottom side by 1.5 centimeters in 45 degree
angle.
Fig. 8.11.2 Cross legs with reference to frame
The figure 8.10.2 clearly shows the angle between horizontal frame and cross
legs. It is given as 40 degrees. The angle is chosen based on the space requirement for
motor on motor mount base plates and the flight controller and battery at center.
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9. FLIGHT CONTROL
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9.1 MOTIONS
Each rotor produces both a thrust and torque about its center of rotation, as
well as a drag force opposite to the vehicle's direction of flight. If all rotors are
spinning at the same angular velocity, with rotors one and three rotating clockwise
and rotors two and four counterclockwise, the net aerodynamic torque, and hence the
angular acceleration about the yaw axis, is exactly zero.
Fig. 9.1 Flight control motions
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9.2 TORQUE
Fig. 9.2 Flight Control - Torque
Schematic of reaction torques on each motor of a quad copter aircraft, due to
spinning rotors. Rotors 1 and 3 spin in one direction, while rotors 2 and 4 spin in the
opposite direction, yielding opposing torques for control
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9.3 YAW
A quad rotor adjusts its yaw by applying more thrust to rotors rotating in one
direction. Yaw is induced by mismatching the balance in aerodynamic torques (i.e.,
by offsetting the cumulative thrust commands between the counter-rotating blade
pairs).The shown figure indicates the motion of quadcopter in yaw motion when
rudder is applied through transmitter. The method of applying rudder can be referred
in section 8 – materials – transmitter – transmitter keys and combinations.
Fig. 9.3 Flight Control – Yaw
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9.4ROLL
A quad rotor adjusts its roll by applying more thrust to one rotor and less
thrust to its diametrically opposite rotor. The figure shown clearly indicates that when
aileron is applied through transmitter key and combinations, the quadcopter can
perform roll motion which can be explained as the motion of quadcopter where it
rotates about its own axis.
Fig, 9.4 Flight Control – Roll
Design and Development of Quad Copter
Department of Production Engineering, K.I.T.'s COEK Page 51
9.5 PITCH
A quad rotor adjusts its pitch by applying more thrust to one rotor and less thrust
to its diametrically opposite rotor. As seen in the figure the quadcopter can rise its
altitude or lower its altitude using the pitch motion. When transmitter keys are used to
give elevator function to quadcopter, it performs pitch motion.
Fig. 9.5 Flight Controls – Pitch
Design and Development of Quad Copter
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10.BILL OF MATERIALS
Design and Development of Quad Copter
Department of Production Engineering, K.I.T.'s COEK Page 53
Particulars Qty Specification Function Cost Manufacturer
BLDC
(brushless
DC Motor)
4
930kv,
6000-8000rpm,
12-14volt
Motion to
Propeller
6000
Phantom
ESC
(Electronic
Speed
Control)
1
25A,Contains
Microcontroller,
MOSFET
Speed
Control
Of Dc
Motor
4000
Hobby king
Battery
1
12v,3cell,Li-Po
Power
Supply
2000
Turnigy zippy
Propellers
4
10X4.5 (InchXpitch)
Flight
500
Turnigy
Transmitter
1
6channel,2.4Ghz,range-
1km
Transmit
signal to
flight
controller
5000
Fly sky
Flight
Controller
1
mcu- Atmega 328
Gyroscope MPU6050
Accelerometer
ADXL35
Autopilot
system
with
hybrid
sensors
and
algorithm
6000
KK Board
Design and Development of Quad Copter
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11. SUMMARY AND
FUTURE WORKS
Design and Development of Quad Copter
Department of Production Engineering, K.I.T.'s COEK Page 55
The system would consist of GPS tracking for location tracking, ultrasonic
range finders for collision detection, and an autopilot controller to tie all the systems
together.
The autopilot software would be the greatest challenge but also the most
useful feature. With a completely automated system the UAV could be given patrol
routes for constant surveillance in secure areas.
11.1 ADVANTAGES
Small-scale quad -copters have frames that enclose the rotors, permitting
flights through more challenging environments, with lower risk of damaging the
vehicle or its surroundings.
Quad copters do not require mechanical linkages to vary the rotor blade pitch
angle as they spin. This simplifies the design and maintenance of the vehicle.
The use of four rotors allows each individual rotor to have a smaller diameter
than the equivalent helicopter rotor, allowing them to possess less kinetic energy
during flight.
Design and Development of Quad Copter
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11.2 DISADVANTAGES
The most significant problem to date have been an ambitious development
schedule coupled with very limited funds. This is followed by complexity in
calculation and designing.
Total Flight time is considerably low because battery available can provide
backup only up to 15 minutes.Without proper permission, flying the Quad may be
considered a crime under “the drone act” , as it violates privacy of other.
11.3 APPLICATIONS – MILITARY
Quadcopter - Unmanned Arial Vehicle are used for surveillance and
reconnaissance by military and law enforcement agencies, as well as search and
rescue missions in urban environments.
One such example is the Aeryon Scout, created by Canadian company Aeryon
Labs, which is a small UAV that can quietly hover in place and use a camera to
observe people and objects on the ground.
The company claims that the machine played a key role in a drug bust in Central
America by providing visual surveillance of a Drug Traffickers compound deep in the
jungle (Aeryon won't reveal the country's name and other specifics).
Design and Development of Quad Copter
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12. CONCLUSION
Design and Development of Quad Copter
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12. CONCLUSION
After a lot of hard work and research, we completed the project in March. After
completion of quadcopter, we immediately started to learn how to fly the quadcopter.
This process took a lot of time because it is not an easy job to fly the quadcopter. But
after a while we almost perfected the art of flying the quadcopter.
The simulator software available for laptop proved to be useful before taking actual
flight in order to prevent the damage to quadcopter. The final image of quadcopter is
shown below.
Hence, here we conclude our project report.
Design and Development of Quad Copter
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13.REFERENCES
Design and Development of Quad Copter
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LINKS
http://www.aeroquadstore.com/AeroQuad_Kits_s/40.htm
http://store.diydrones.com/category_s/28.htmhttp://store.scoutuav.com/products/prod
uct-category/scout-kits/
OTHER LINKS
[1] K. Munson. (1968). Helicopters and Other Rotorcraft Since 1907 [Online].
Available: http://aviastar.org/helicopters_eng/oemichen.php
[2] Gabriel Hoffmann. (2007, January 15) Schematic of reaction torques on each
motor of a quadrotor aircraft, due to spinning rotors [Online].
Available: http://en.wikipedia.org/wiki/File:Quadrotor_yaw_torque.png
[3] FPVUK (2012) How do I go about it? [Online]
Available: http://fpvuk.org/what-is-fpv/what-do-i-need/
[4] Simon Sze. Chapter 13.6 inPhysics of semiconductor devices (3 ed.) John Wiley
and Sons, 2007.
[5] lorextechnology.com (2012) Understanding Digital and Analog Wireless
Technology [Online].
Available:http://www.lorextechnology.com/support/self-
serve/Understanding+Digital+and+Analog+Wireless+Technology/3700043
[6] Rockwell Semiconductor Systems (1997) Single-Chip Video and Broadcast Audio
Capture for the PCI Bus[Online].
Available: http://www.ituner.com/spectra/Bt878.pdf
[7] Howard Shane. (2005, January 29) The BTTV HOWTO [Online]
Available:http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-
formats/html_single/BTTV.html