T.E. MINI PROJECT

Design and Fabrication of Fly-by-Wire System for Flight Control

JUBIN GOEL (T8023065)

ANKIT KARMAKAR (T8023069)

YOGESH SONULE (T8023155)

Internal Guide – Prof. Alwin Anuse

Wire

By

FlyFLIGHT

USING ELECTRONICCONTROL

HOW DOES IT WORK Input from various Pilot Controls:

Steer Column

Foot Pedals

Throttle Control

is taken in the form of analog inputs, converted to electronic signals which is sent via the Flight Computer to the actuators controlling the Flight Surfaces.

CURRENT TRENDSAlmost all Military and Civil Aircraft are now using

this technology.

State-of-the-Art military aircraft like the F-22 Raptor of the USAF and milestone civilian aircraft like the A380 from Airbus rely on highly advanced FBW systems.

Power-By Wire

Fly-By Optics

SCOPE

Fly-By Wireless

FBW systems are under test for incorporation with REMOTE FLIGHT ASSISTANCE SYSTEMS in case of emergencies.

More sophisticated and ‘SMARTER’ Flight Computers for increased performance and safety.

The 3 Critical Flight Parameters that we

need to control

YAW MOVEMENT

PITCH MOVEMENT

ROLL MOVEMENT

How do we do it?We have attached 3 servo-motors with three wooden

‘wings’.

By sending precise ON-OFF Pulse trains to the servo, we plan to move the Elevators and the Rudder of the model, to and fro of the stable position.

The magnitude and direction of these movements will be determined by the use of 6 Push-switches.

BLOCK DIAGRAM

UP

DOWN

RIGHT

LEFT BANKING

LEFT

RIGHT BANKING

A

T

M

E

G

A

8

M1 => Left Wing Flap M2=> Right Wing Flap M3 => Tail-planeMotor Motor Motor

M1

M2

M3

SYSTEM ALGORITHM

START

INITIALIZE I/P & O/P OF µC

INITIALIZE ALL SERVOS TO THEIR INITIAL POSITIONS

SCAN ALL JOYSTICK KEYS

GET KEYCODE OF RESP. KEY PRESSED

ROTATE SERVOS TO DESIRED POSITIONS&

HOLD UNTILL KEY IS RELEASED

COMPONENT SELECTION CRITERIA

µController: ATMEGA8

1. 3 PWM control required

2. Compactness of circuit

3. Resources available – availability of hardware and

software needed for programming and construction of

ckt.

4. 6 Analog Inputs

5. Cost-effective

Actuator: SERVO MOTOR – FUTABA S3003

1. Positioning Control by rotation around an axis

2. Precise control over rotary movement

3. Reasonable power consumption

4. Lightweight

5. Sufficient Torque

6. Market availability

in case of Damage or needed replacement.

COMPONENT SELECTION CRITERIA

SIMULATION IN PROTEUS

SIMULATION WAVEFORMS

SYSTEM SPECIFICATIONS Input Power Supply: DC 12V, 2A

µController: ATMEGA8

System Operating Frequency: 1MHz (Internal Clock)

Servo Ratings: 4.8V-6V, 500mA

Servo Motor Frequency: 414.66Hz

Joystick Input Voltage: 5V DC

Servo Motor Rotation Range: -30˚to +30˚ w.r.t. horizontal level

RESULT DISCUSSION

Type of Aircraft Rotation Range

Commercial Airliners (-14˚ to 14˚)

Fighter Jets (-35˚ to 35˚)

Our Prototype (-30˚ to 30˚)

REFERENCESWebsites:1. www.electronics-lab.com2. www.et06.com/atmega_timers3. www.avrfreaks.net4. www.extremelectronics.co.in

Books:The AVR Microcontrollers and Embedded Systems Using

Assembly And C-By Muhammad Ali Mazidi

Sarmad NaimiSepher Naimi

THANK YOU…