Drag (physics) - Wikipedia
wave drag (aerodynamics) is caused by the presence of shockwaves and first appears at subsonic aircraft speeds when local flow velocities become supersonic. The wave drag of the supersonic Concorde prototype aircraft was reduced at Mach 2 by 1.8% by applying the area rule which extended the rear fuselage 3.73 m (12.2 ft) on the production aircraft.
What is Drag? | Glenn Research Center | NASA
2022年7月21日 · 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 …
Aerodynamic Drag – The Physics Hypertextbook
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.
How to calculate aerodynamic drag force – x-engineer.org
Any body which moves through a fluid (gas or liquid) is opposed by a resistance force called aerodynamic drag force. The same principle applies for road vehicles, when moving, due to the interaction with the surrounding air, a resistive force develops which …
Drag Equation | Glenn Research Center | NASA
2024年7月15日 · 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 …
Aerodynamic Drag - an overview | ScienceDirect Topics
In high-speed formula or road cars where aerodynamic downforce is a major part of the package, aerodynamic drag is much the largest contributor to the total drag force.
Drag | Glenn Research Center | NASA
2023年1月21日 · 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 …
The Drag Equation - NASA
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.
Understanding Aerodynamic Drag - YouTube
Drag and lift are the forces which act on a body moving through a fluid, or on a stationary object in a flowing fluid. We call these aerodynamic forces (if the fluid is a gas) or hydrodynamic...
Drag | Aerodynamics, Air Resistance & Turbulence | Britannica
2024年11月15日 · 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.