Attrition rate
The speed of loss or simply loss rate is the minimum speed at which an aircraft is able to fly by staying in the air, that is, getting a lift that is able to match its weight and not lose height.
When an aircraft decreases the speed at which it flies by correcting the angle of attack (lever back) while keeping the engines' thrust fixed, the lift progressively increases, but at the same time the point is moved forward. generation of the turbulent layer that is not sustaining. If the angle of attack continues to increase (reducing the speed) progressively, a point is reached in which the loss is reached, at which point the Suspension disappears more or less abruptly, according to the type of Aerodynamic Profile in each case .
The stall speed depends on the configuration of the aircraft. For example, in the landing configuration (with the maximum deflector devices deflected) it is possible that the loss rate of the aircraft is minimal, or what is the same: the aircraft in landing configuration will be able to fly the slowest possible staying in the air. Loss process of a wing profile: non-sustaining turbulent flow appears in yellow
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