Definition
The amount of the airplane's weight supported by each wheel during ground operations. Wheel loading determines how firmly the tires press against the runway surface, which affects braking effectiveness, tire traction, and the airplane's resistance to being pushed sideways by crosswinds during rollout.
Plain English
How much weight is pressing down on each wheel when the airplane is on the ground. More weight on a wheel means more grip; less weight means less grip.
Context Anchor
Used during landing discussions, especially when describing how the airplane settles onto the runway and how control inputs affect the weight on each wheel.
Derivation
“Load” means a weight or force carried by something. In this term, the wheel is not being loaded with cargo; it is carrying part of the airplane’s weight and landing force.
Why Pilots Care
Adequate wheel loading increases tire friction, which improves braking power and directional control on the runway.
Analogy
Like pressing your hand lightly on a table versus pressing down firmly, more pressure gives more contact and more resistance to sliding.
Intuition Check
Do not read “wheel loading” as loading baggage or cargo near a wheel. Here it means the weight and force pressing down on a wheel during landing and rollout.
Example Sentence 1
After the main wheels touched down, the pilot eased the elevator forward to increase wheel loading and improve braking on the short runway.
Example Sentence 2
Crosswind landing technique keeps some wheel loading on the upwind main gear to maintain directional control.