induced drag


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induced drag

n
(Aeronautics) the former name for trailing vortex drag
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As the aircraft rises out of ground effect with a deficiency of speed, the greater induced drag may result in marginal initial climb performance.
Jones investigated V-shaped tailless UAVs with a sweepback angle of 45[degrees] on the leading edge and found that ground effects rise pitching moment and slope of lift curve and reduces induced drag, while the total drag on the UAV increases [16].
The formation of a vortex implies energy loss in the flow and acts as a cause of induced drag, negatively affecting the vehicle aerodynamic characteristics.
Compared to the traditional layout, the induced drag for tandem airfoil configuration is smaller and the wingspan can be reduced with the same stiffness, for the reason that the two wings in tandem airfoil configuration are all generating positive lift.
The NASA technical publication is entitled, "On Wings of the Minimum Induced Drag: Spanload Implications for Aircraft and Birds," NASA/TP 2016-219072.
The discussion of drag reduction will illustrate the innovations of the British on external wire bracing drag, the French on cowl design and the Germans on cantilevered wings and induced drag. Control surfaces and handling will show the invention of balanced controls, and the use of the equations of motion to design specific handling properties, as illustrated in several aircraft.
The cause of wake turbulence is well known--the lift produced by the aircraft wing and the induced drag. When questioned as to the origin of induced drag, many pilots cite the textbook answer, "It is the product of lift." Yeah, true, but not very enlightening.
closing them to span wise airflow and helping to reduce induced drag. The wing end fences also provide a degree of yaw stability and serve as a retaining structure for the elevons.
Not only is the wing producing several hundred to a few thousand pounds of lift at that point, but the proprotors' induced power (the power required to overcome induced drag) has the total power required on a slide down the "back side" of the power-required curve (Fig 1).
The component that is resultant force parallel to the velocity vector of the wing is defined as induced drag. There are other forms of drag, which are collectively known as parasite or profile drag; this drag is created by the friction of the object moving through the air.
These vortices produce what is called induced drag and are powerful enough to disrupt aircraft flying too closely to one anotherNone reason for the carefully monitored spacing between flights at takeoff and in the air.
Also being looked into is the installation of wing-tip winglets to reduce induced drag and thereby enable the aircraft to increase its operational ceiling, which will prove a significant advantage particularly for the AEW&C version mentioned above.