This document discusses the components and functions of an aircraft roll control system for autopilot. It describes the primary flight control surfaces - ailerons, rudder, and elevators - and their purposes. It then explains the components that make up the roll control system, including the controller gain, aileron actuator, aircraft dynamics model, and gyro. The system uses these components to automatically control and maintain the aircraft's roll angle based on input from the gyro. Autopilot systems provide advantages such as reducing pilot workload and fatigue during flight.

2. Introduction
Flight Control Surfaces
Block Diagram
Components and functions
Advantages
Applications

3. Autopilot is a system of automatic controls which
holds the aircraft on any selected magnetic
heading…
 In this project our goal is to control the roll angle
of the aircraft in the auto pilot system..

4. Aircraft is controlled by three main surfaces:
1) AILERON
2) RUDDER
3) ELEVATOR
PURPOSE
TO ENABLE THE PILOT TO EXERCISE CONTROL
OVER THE AIRCRAFT DURING ALLL PORTIONS OF
FLIGHT.

5. The ailerons are one of threeThe ailerons are one of three
primary flight control surfacesprimary flight control surfaces
found on aircraft..found on aircraft..
AileronsAilerons are small hingedare small hinged
sections on the outboard portionsections on the outboard portion
of a wing.of a wing.
They are movable surfaces thatThey are movable surfaces that
control movement about thecontrol movement about the
longitudinal axis--calledlongitudinal axis--called roll.roll.
Ailerons can be used toAilerons can be used to
generate agenerate a rolling motionrolling motion for anfor an
aircraftaircraft

7. On the trailing edge of the verticalOn the trailing edge of the vertical
stabilizer is thestabilizer is the RudderRudder..
This controls theThis controls the yawyaw or theor the
left/right sliding movements of theleft/right sliding movements of the
aircraft.aircraft.
On a real aircraft, this is controlledOn a real aircraft, this is controlled
by the foot pedalsby the foot pedals
When the pilot pushes the leftWhen the pilot pushes the left
pedal, the rudder deflects left.pedal, the rudder deflects left.
Pushing the right pedal causes thePushing the right pedal causes the
rudder to deflect right.rudder to deflect right.

9. The elevator is on the tail ofThe elevator is on the tail of
the aircraft, moving the elevatorthe aircraft, moving the elevator
causes the nose of the aircraft tocauses the nose of the aircraft to
go up or down, allowing thego up or down, allowing the
aircraft to climb or descent..aircraft to climb or descent..
Elevators control the up/downElevators control the up/down
motion of aircraft that is called asmotion of aircraft that is called as
pitch..pitch..
When the pilot pulls the stickWhen the pilot pulls the stick
backward, the elevators go up.backward, the elevators go up.
Pushing the stick forward causesPushing the stick forward causes
the elevators to go down.the elevators to go down.

11. Gyro
K
Contoller gain
Desired bank
angle
Φd(s)
Φ(s)
Bank
angle
Gyro
K
Contoller gain
Desired bank
angle
Φd(s)
Φ(s)
Bank
angle
Gyro
K
Ød(s)
Desired Bank
angle
Controller gain
Ø(s)
Bank
Angle

12. The aircraft roll control provides the
components & functions including:
Controller gain
Aileron actuator
Aircraft dynamics
Gyro

13. Actuator is the device that cause the process to
provide the output..
So,the Aileron Actuator is the device which cause
the movement of ailerons..

16. The ailerons are used to bank the aircraft; to
cause one wing tip to move up and the other
wing tip to move down..
Both the Ailerons always move in opposite to
each other..
Lowering the aileron on one wing raises the
aileron on the other..
The wing with the lowered aileron rises because
of its increase lift, and the wing with the raised
aileron moves downward because of its
decreased lift.

17. Angle which is generated by the movement of
Ailerons is called as Roll Angle.
Roll is defined as a rotation about the
 x-axis, or longitudinal axis, of a flying vehicle.

19. The GYROS (TO SENSE WHAT AIRPLANE IS
DOING)
Directional Gyro(Heading Indicator) is used in an
aircraft to inform the pilot of his heading.
The Gyro works using a gyroscope, tied to the
aircraft horizontal..

21. Flight dynamics is the science of air and space
vehicle orientation and control in three
dimensions..
AirCraft Dynamics uses for determination of the
position and velocity of aircraft at some arbitrary
time..

24. Auto pilot system reduce the work strain of pilot..
Auto pilot roll controlling reduces the fatigue of
controlling the aircraft in flight by the pilot.

25. • It is used in the auto missiles to control the roll
angle..
• It can be used in almost every aircraft for auto
pilot controlling..