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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.
21 Ιουλ 2022 · Drag is the aerodynamic force that opposes an aircraft’s motion through the air. Drag is generated by every part of the airplane (even the engines!). How is drag generated? Drag is a mechanical force. It is generated by the interaction and contact of a solid body with a fluid (liquid or gas).
In aerodynamics, aerodynamic drag, also known as air resistance, is the fluid drag force that acts on any moving solid body in the direction of the air's freestream flow. [23] From the body's perspective (near-field approach), the drag results from forces due to pressure distributions over the body surface, symbolized .
19 Φεβ 2023 · Understanding Aerodynamic Drag. Drag and lift are the forces that act on a body moving through a fluid, or that act on a stationary object in a flowing fluid. We call these aerodynamic forces if the fluid is a gas like air, or hydrodynamic forces if the fluid is a liquid.
4 Οκτ 2024 · drag, force exerted by a fluid stream on any obstacle in its path or felt by an object moving through a fluid. Its magnitude and how it may be reduced are important to designers of moving vehicles, ships, suspension bridges, cooling towers, and other structures.
15 Ιουλ 2024 · Drag depends on the density of the air, the square of the velocity, the air’s viscosity and compressibility, the size and shape of the body, and the body’s inclination to the flow. In general, the dependence on body shape, inclination, air viscosity, and compressibility is very complex.
Aerodynamic Drag. … viscosity. drag. turbulence … Drag is the friction from fluids like air and water. A runner feels the force of aerodynamic drag. A swimmer feels the force of hydrodynamic drag.
