Sketching-People

BILLOWING FOLD
The billowing fold (or flying fold) is created when wind is the
dominant force acting on cloth, such as on a flag. Because
the folds are dynamically swelling and gathering, the patterns
are constantly changing, but the undulating surface forms
large waves that travel across the length of the fabric. In
addition, the cloth is usually anchored at various points that
pull against the wind, where you can see loose pipe folds
trying to form horizontally while interlocking folds may begin
to form at the unsupported end.
BASIC BILLOWING FOLDS
Billowing folds are very dynamic; notice the overall undulating
wave pattern consistent in the photos below. When analyzing a
billowing fold, first look for the overall rising and falling of the cloth,
then overlay any smaller folds that ride along the larger waves.
PLACES TO FIND BILLOWING FOLDS
Though not as dramatic as a flag, when a woman’s dress catches
the wind, a billowing fold will appear. Any panel of fabric that
catches the wind will create billowing folds: The unzipped jacket of
a motorcycle rider, a cape on a superhero and the jumpsuit of a
parachutist are a few examples.