What type of brakes do the main gear wheels in an A320 have?

The main gear wheels of the A320 are equipped with hydraulically operated brakes that include an anti-skid protection system. This type of braking system is designed to provide efficient stopping power while ensuring safety and control during landing and taxiing phases. The hydraulic system uses fluid pressure to operate the brake calipers, which compress the brake discs and create the necessary friction to slow down or stop the aircraft.

The anti-skid protection is a crucial feature that prevents the wheels from locking up during braking, particularly in slippery conditions, thereby reducing the risk of skidding and maintaining better directional control. By modulating brake pressure, the system optimizes braking performance while enhancing safety.

This design contrasts with other options: electrically operated brakes are not used in the A320; pneumatic brakes, which rely on air pressure, do not apply to this aircraft; and friction brakes, while a fundamental concept, do not specify the operating mechanism or safety features present in the A320's braking system.