What do pilots call the joystick? The Yoke and the Stick Explained
If you've ever watched a movie or seen a picture of an airplane cockpit, you've likely noticed the primary control that pilots use to steer the aircraft. Many people casually refer to this as a "joystick," much like the ones found in video games. However, in the world of aviation, pilots use specific terms for these controls, and the terminology can differ depending on the type of aircraft.
The Yoke: The Classic Control Wheel
In most traditional and larger aircraft, including many commercial airliners, the primary flight control is a control wheel, more commonly known as a yoke. It's a large, U-shaped wheel that sits in front of the pilot and co-pilot. The yoke controls the aircraft's pitch (nose up or down) and roll (wing tilt left or right).
- Pitch Control: Pushing the yoke forward makes the nose of the aircraft go down, causing it to descend. Pulling the yoke back causes the nose to go up, making the aircraft climb.
- Roll Control: Turning the yoke to the left or right banks the aircraft in that direction. This is how pilots initiate turns.
The yoke is connected to the aircraft's control surfaces. Pushing or pulling it moves the elevators on the horizontal stabilizer (controlling pitch), and turning it moves the ailerons on the wings (controlling roll). The yoke is a familiar sight to anyone who has seen the cockpit of a Boeing 747, an Airbus A320, or a Cessna 172.
The Stick: The More Agile Control
In many smaller aircraft, particularly many general aviation planes and fighter jets, the primary flight control is a control stick, often referred to simply as a stick. This control is more akin to a traditional joystick, typically a vertical lever located between the pilots' legs or to their side.
- Pitch Control: Pushing the stick forward causes the nose to pitch down. Pulling the stick back causes the nose to pitch up.
- Roll Control: Moving the stick left or right causes the aircraft to roll in that direction.
Like the yoke, the stick is also connected to the aircraft's ailerons and elevators. The stick offers a more direct and often more sensitive control input compared to a yoke, which is why it's prevalent in high-performance aircraft where quick and precise maneuvers are crucial.
A Modern Evolution: The Sidestick Controller
More recently, some modern aircraft, particularly those manufactured by Airbus (like the A320 family and A350), have adopted a sidestick controller. This is a smaller, joystick-like control that is positioned on the side of the pilot's seat, usually to the right of the co-pilot and to the left of the captain. Unlike the traditional center-mounted stick, the sidestick is not mechanically linked to the control surfaces in many designs; instead, it sends electrical signals to computers that then move the control surfaces.
This fly-by-wire technology offers several advantages, including weight reduction and the ability for flight control computers to intervene and prevent the pilot from exceeding the aircraft's flight envelope.
Why the Different Terminology?
The distinction between a "yoke" and a "stick" is primarily due to the shape and historical development of aircraft controls. The yoke, with its wheel-like structure, was an early innovation to provide pilots with a more intuitive way to control pitch and roll simultaneously. The stick, being a simpler lever, became popular in smaller aircraft and later evolved into the sidestick in modern designs.
"While the term 'joystick' is commonly used by the public, pilots themselves will always refer to their primary flight controls by their specific names: yoke, stick, or sidestick, depending on the aircraft type."
Frequently Asked Questions (FAQ)
How do pilots control altitude with a joystick?
Pilots control altitude using either a yoke or a stick by adjusting the aircraft's pitch. Pushing the control forward lowers the nose, causing the plane to descend and lose altitude. Pulling the control back raises the nose, causing the plane to climb and gain altitude. The throttles also play a role in controlling the rate of climb or descent by adjusting engine power.
Why do some planes have a yoke and others have a stick?
The choice between a yoke and a stick is largely a matter of aircraft design philosophy and historical development. Yokes are common in larger, traditional aircraft for their perceived intuitiveness in controlling both pitch and roll. Sticks, often found in smaller aircraft and fighter jets, offer more direct and sometimes more responsive control, which is beneficial for agile flight. Sidesticks represent a modern evolution, particularly in fly-by-wire systems.
Can a pilot use a joystick to control both pitch and roll?
Yes, both the yoke and the stick are designed to control both pitch and roll. The yoke is turned left or right to control roll and pushed forward or pulled back to control pitch. A central stick is also moved in the desired direction for roll and pushed forward or pulled back for pitch. Sidesticks typically operate in a similar manner, with forward/back movement controlling pitch and left/right movement controlling roll.
