Fly-by-wire technology replaces the conventional manual flight controls of an aircraft with an electronic interface. It converts the movements of flight controls into electronic signals transmitted by wires to flight control computers, which then determine how to move actuators at each control surface. This allows the system to automatically stabilize the aircraft and prevent unsafe maneuvers. Fly-by-wire provides advantages like increased stability, reduced weight and maintenance needs, higher fuel efficiency, and easier integration of advanced flight control functions.

1. FLY BY WIRE
PRESENTED BY
A.P.PAVAN KUMAR(128W1A1058)
K.SARAVANA BHAVA(128W1A1087)
Y.BHARATH(128W1A10B4)
S.DILEEP(138W5A1025)
GUIDE
MR.P.RAJESH
M.Tech

2. PLAN OF TALK
• INTRODUCTION
• PROBLEM
• EFFECTS
• METHOD OF SOLVING
• SELECTED METHOD
• CONCLUSION

3. INTRODUCTION
A fly-by-wire (FBW) system is a computer-
based flight control system that replaces the
mechanical link between the pilot’s cockpit
controls and the moving surfaces by much
lighter electrical wires also replaces the
conventional manual flight controls of an
aircraft with an electronic interface.

4. PROBLEM
• Mechanical and hydro-mechanical flight control
systems are relatively heavy and require careful routing of
flight control cables through the aircraft by systems of
pulleys, cranks, tension cables and hydraulic pipes.
• Both systems often require redundant backup to deal with
failures, which increases weight. Both have limited ability
to compensate for changing aerodynamic conditions.
• Dangerous characteristics such as stalling, spinning
and pilot-induced oscillation (PIO), which depend mainly on
the stability and structure of the aircraft concerned rather
than the control system itself, can still occur with these
systems.

6. EFFECTS
• Increased weight of the air craft systems
• Increased complexity
• Less survivability
• Fuel inefficiency
• Reduced safety and reliability
• CO2 and NO2 emissions
• Increased pilot work load
• High cost
• High maintenance
• reduced stability

7. FLY BY WIRE
TECHNOLOGY
• Fly-by-wire (FBW) is a system that replaces the
conventional manual flight controls of an aircraft with
an electronic interface.
• The movements of flight controls are converted to
electronic signals transmitted by wires (hence the fly-by-
wire term), and flight control computers determine how to
move the actuators at each control surface to provide the
ordered response.
• The fly-by-wire system also allows automatic signals sent
by the aircraft's computers to perform functions without
the pilot's input, as in systems that automatically help
stabilize the aircraft, or prevent unsafe operation of the
aircraft outside of its performance envelope.

9. The fly-by-wire system also allows
automatic signals sent by the aircraft's
computers to perform functions without
the pilot's input, as in systems that
automatically help stabilize the aircraft,
or prevent unsafe operation of the
aircraft outside of its performance
envelope.

11. ADVANTAGES
• Flight envelope protection
• Increase of stability and handling qualities
• Weight reduction
• Maintenance reduction
• Fuel efficiency
• Higher stability
• Drag reduction
• Easier interfacing
• Turbulence suppression and consequent
decrease of fatigue loads