form drag


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Related to form drag: Induced drag, Wave drag

form drag

[′fȯrm ‚drag]
(fluid mechanics)
The drag from all causes resulting from the particular shape of a body relative to its direction of motion, as of fuselage, wing, or nacelle.
At supersonic speed, the drag caused by losses due to shock waves, exclusive of losses due to skin friction.

form drag

form drag
Flow over low drag body.
form drag
Flow over body with high form drag.
form drag
Relationship between form drag and speed.
form drag
Form lines are broken/dotted lines and sketched from visual observations.
A type of parasitic drag. Form drag is caused by the frontal area of the airplane components being exposed to the airstream. Drag is caused by the form or shape of the body and, hence, the name. It can be reduced by streamlining the exposed parts and by area ruling. Also called boundary-layer normal-pressure drag. See also area rule.
References in periodicals archive ?
TYR was the first company to decompose the components of overall total drag in racing swimsuits into three elements: form drag, pressure drag and wave drag.
The idea the adidas innovation team came up with was unique: Instead of focusing on friction drag (caused by the surface of a swimmer) that only accounts for 8% of the drag a swimmer faces in the water they looked into the effects of form drag (caused by the shape of a swimmer) that account for 56%.