an airfoil.
<ul><li><b>1</b>: zero lift line</li>
<li><b>2</b>: leading edge</li>
<li><b>3</b>: nose circle</li>
<li><b>4</b>: thickness</li>
<li><b>5</b>: camber</li>
<li><b>6</b>: upper surface</li>
<li><b>7</b>: trailing edge</li>
<li><b>8</b>: main camber line</li>
<li><b>9</b>: lower  surface</li></ul>
<a href="//commons.wikimedia.org/wiki/User:F_l_a_n_k_e_r" title="User:F l a n k e r">F l a n k e r</a>
2007-11-03
McCormick, <i>Aerodynamics of V/STOL flight</i>, Dover Publications, <a href="//commons.wikimedia.org/wiki/Special:BookSources/0486404609" title="Special:BookSources/0486404609">ISBN 0486404609</a>.