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Is a higher lift to drag ratio better?
A greater or more favorable L/D ratio is typically one of the major goals of aircraft design; since a particular aircraft’s required lift is set by its weight, delivering that lift with lower drag results directly in better fuel economy in aircraft, climb performance, and glide ratio.
Does maximum lift create minimum drag?
The lift to drag ratio (L/D) is the amount of lift generated by a wing or airfoil compared to its drag. The maximum lift/drag ratio occurs at one specific CL (Lift Coefficient) and AOA (Angle of Attack (AOA)). If the aircraft is operated in steady flight at Lift/Drag maximum ratio, the total drag is at a minimum.
Does flying higher reduce drag?
Actually aerodynamic drag stays the same when altitude is increased.
When does the maximum lift and drag ratio occur?
The maximum lift/drag ratio occurs at one specific CL (Lift Coefficient) and AOA ( Angle of Attack (AOA) ). If the aircraft is operated in steady flight at Lift/Drag maximum ratio, the total drag is at a minimum.
How does AOA affect lift and drag ratio?
Any AOA lower or higher than that producing the maximum Lift/Drag ratio reduces the Lift/Drag ratio and consequently increases the total drag for a given aircraft’s lift. Lift/drag ratio also determines the glide ratio and gliding range.
What is the aerodynamic penalty for lift generation?
The aerodynamic penalty for lift generation is the production of what is called induced drag. Figure 1.14 (a) shows the force balance for a vehicle in level, unaccelerated flight. It is clear that if a particular level flight speed is to be maintained, a force must be introduced to balance the drag force.
How does the angle of the tether affect the lift to drag ratio?
The angle of the tether reflects the dramatic improvement in the lift-to-drag ratio In aerodynamics, the lift-to-drag ratio, or L/D ratio, is the amount of lift generated by a wing or vehicle, divided by the aerodynamic drag it creates by moving through the air.