The Boeing 787 main wheel brake assembly uses four electric brake actuators per wheel, replacing the hydraulic pistons traditionally used to apply braking force. The actuators convert electrical commands into mechanical force that clamps the carbon brake discs to generate braking torque, and the system also provides real-time carbon-disc wear information to the cockpit.
A close-up look at the Boeing 787’s electric brake assembly, showing the electric actuators, wiring and carbon brake stack.
The 787 uses four electric brake actuators on each main wheel, replacing the hydraulic pistons traditionally used to apply the brakes. The actuators convert electrical commands into mechanical force that clamps the carbon discs and produces braking torque. Boeing
What looks like a relatively simple brake assembly is actually a highly integrated electromechanical system, replacing much of the conventional hydraulic actuation with electrical control while also providing brake-condition information such as real-time carbon-disc wear.
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The Boeing 787 uses electrically actuated carbon brakes on its main landing gear. Instead of hydraulic pistons, electric brake actuators use motors and gear mechanisms to press the carbon brake discs together. The discs rotate with the wheels, and the braking force converts the aircraft's kinetic energy into heat, slowing the aircraft. The brake assembly includes the carbon discs, torque tube, actuator carrier, electric actuators and electrical connections. The system also monitors carbon-disc wear, allowing brake-condition information to be provided to the cockpit.
Source: Tengiz · x.com