The Wheel in a 777 Cockpit Doesn’t Steer. Here’s What It Does

Airplanes turn by banking. Turning the control wheel moves the ailerons (one up, one down; on the 777, flaperons and spoilers help too), so the jet rolls. Once the wings tilt, part of their lift points sideways, and that horizontal pull curves the flight path, like a bike leaning into a corner. The rudder mostly keeps the turn coordinated. In a level 30-degree bank, the wings must make about 15% more lift (load factor = 1/cos 30° ≈ 1.15), so the nose comes up slightly.

Notes: On the ground, pilots steer the nose wheel with a small tiller. Control-surface movements are exaggerated for visibility, and the turn is shown with a tighter radius than a real airliner flies.

Sources:
– FAA Airplane Flying Handbook, ch. 10 (turns, horizontal component of lift):
– Aerodynamics of turns (Gleim):
– Load factor:
– Flight control surfaces: