What is wave drag in aircraft?
Wave Drag is a force, or drag, that retards the forward movement of an airplane, in both supersonic and Transonic Flight, as a consequence of the formation of shock waves.
What is wave drag in fluid mechanics?
Wave drag (also called compressibility drag) is drag that is created when a body moves in a compressible fluid and at speeds that are close to the speed of sound in that fluid. In aerodynamics, wave drag consists of multiple components depending on the speed regime of the flight.
How do you calculate drag for fuselage?
The most common method is, therefore, to estimate aircraft fuselage drag by multiplying a flat-plate fully turbulent skin friction coefficient with a form factor (FF) and the fuselage’s wetted area [see Eq.
How do you calculate wave drag?
The drag coefficient Cd is equal to the drag D divided by the quantity: density r times half the velocity V squared times the reference area A. The drag coefficient then expresses the ratio of the drag force to the force produced by the dynamic pressure times the area.
What type of drag is wave drag?
Wave drag is a component of pressure drag due to compressibility effects. It is caused by the formation of shock waves around a body. Shock waves create a considerable amount of drag, which can result in extreme drag on the body.
What is a shockwave aviation?
When an aircraft approaches the speed of sound, the airflow over the wing reaches supersonic speed before the airplane itself does, and a shock wave forms on the wing. The airflow behind the shock wave breaks up into a turbulent wake, increasing drag.
How is drag measured?
The drag equation states that drag D is equal to the drag coefficient Cd times the density r times half of the velocity V squared times the reference area A. For given air conditions, shape, and inclination of the object, we must determine a value for Cd to determine drag.
What is pressure drag?
Pressure drag is equal to the rate of change of air particles’ linear momentum normal to the local surface in a local surface’s co-moving inertial frame minus pressure forces.
Is wave drag pressure drag?
What are 3 types of drag?
Friction Drag. Wave Drag. Surface Coatings and Drag Reduction.