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The friction drag force, which is a tangential force on the aircraft surface, depends substantially on boundary layer configuration and viscosity. The net friction drag, D f {\displaystyle D_{f}} , is calculated as the downstream projection of the viscous forces evaluated over the body's surface.
The force on an object that resists its motion through a fluid is called drag. When the fluid is a gas like air, it is called aerodynamic drag or air resistance. When the fluid is a liquid like water it is called hydrodynamic drag, but never "water resistance". Fluids are characterized by their ability to flow.
10 Μαΐ 2023 · By definition, air resistance describes the forces that are in opposition to the relative motion of an object as it passes through the air. These drag forces act opposite to the oncoming flow velocity, thus slowing the object down.
17 Μαΐ 2016 · Definition: By definition, air resistance describes the forces that are in opposition to the relative motion of an object as it passes through the air. These drag forces act...
What is Friction Drag? Friction is the resistance that happens when two things rub together—like air against an airplane. Friction is partly what causes drag. How Does Friction Work? When an object moves through air, the air closest to the object’s surface is dragged along with it, pulling or rubbing at the air that it passes.
Air resistance is the frictional force that opposes an object’s motion through the air (the drag force in the air). An object’s surface area, shape, and speed affect how much air resistance they experience.
