How Do Rudder Pedals Work on an Airplane? | Yaw And Brake

Rudder pedals steer the nose left or right by deflecting the vertical tail fin. The pedal’s bottom controls the rudder; the top applies the brakes.

Rudder pedals are the foot-operated controls on the cockpit floor that let a pilot steer the aircraft’s nose left and right in the air and guide it on the runway during takeoff and landing. They work by deflecting the rudder—the vertical surface on the tail—which pushes the tail in the opposite direction and rotates the nose. But each pedal actually does two jobs, and knowing the difference between them is what keeps a landing smooth instead of sudden. Understanding how rudder pedals work on an airplane starts with two basic facts: they steer the nose and they stop the wheels, and those two functions live on different parts of the same pedal.

What Rudder Pedals Actually Do

Pressing the left pedal forward deflects the rudder to the left, which pushes the tail to the right and yaws the nose left. Pressing the right pedal does the reverse. The pedals move in tandem—when one goes forward, the other rises automatically—and the rudder deflects proportionally to how much pressure you apply. Release the pressure, and a spring-loaded system returns the pedals to neutral.

That movement is carried from the pedals to the rudder through mechanical cables in most small aircraft or hydraulic linkages in larger, faster planes. The rudder changes the angle of the vertical stabilizer’s airfoil, creating a side force that rotates the aircraft around its center of gravity.

The Two Jobs Of Each Pedal

Every rudder pedal has two distinct control zones. The bottom part—where you slide your whole leg forward and back—controls the rudder and, on the ground, the nose wheel steering. The top part, which you pivot with your ankle, activates the brakes on that side. On most general aviation aircraft, depressing a pedal turns the nose wheel about 10 degrees each side of center, and applying brakes simultaneously increases that turn to 30 degrees each side.

This design means your feet have to be placed deliberately. During the ground roll, you keep your heels on the floor and rest your toes on the bottom of the pedals so you can steer without accidentally braking. To stop, you lift your feet and press the top of the pedals with your instep, rotating the pedal around its center. The difference between sliding your leg and flexing your ankle is the difference between a controlled taxi and an abrupt halt.

How Do Pilots Use Rudder Pedals On The Ground And In The Air?

The most common in-flight use of rudder pedals is coordinating turns and counteracting adverse yaw. When you bank with ailerons, the descending wing creates more drag and pulls the nose in the wrong direction. A touch of opposite rudder keeps the turn coordinated. In aircraft with sidestick controls and automatic yaw damping, the rudder pedals see less use during normal flight, but they become critical when an engine fails—the asymmetric thrust tries to yaw the plane toward the dead engine, and the pilot uses the pedals to hold the nose straight.

On the ground, the pedals steer the nose wheel during taxi and keep the aircraft aligned with the centerline during the takeoff roll and landing rollout. During a crosswind landing, the pilot uses the rudder to point the nose straight down the runway while the wings stay level.

Common mistakes include inadvertently pressing the top of the pedal during takeoff (which applies the brakes instead of steering), over-depressing one pedal while the other rises, and confusing heading with track. In high-speed aircraft, excessive rudder input can stress the airframe, which is why large planes use hydraulic actuators to assist with the loads. For pilots and sim enthusiasts looking at the hardware side, our roundup of the best airplane rudder pedals on the market covers the top options available today.