A simplified diagram showing hypothetical values for air flow properties through the tail of a NOTAR tail rotor-less helicopter. This diagram was intended for use as a textbook exercise.
<ul><li><a href="//commons.wikimedia.org/wiki/File:MD_500C_orthographical_image.svg" class="mw-redirect" title="File:MD 500C orthographical image.svg">Original image</a>: <a href="//commons.wikimedia.org/wiki/User:FOX_52" title="User:FOX 52">User:FOX 52</a></li>
<li>Derivative work: <a href="//commons.wikimedia.org/wiki/User:Ariadacapo" title="User:Ariadacapo">Olivier Cleynen</a></li></ul>
<span class="int-own-work" lang="en">Own work</span> by <a href="//commons.wikimedia.org/wiki/User:Ariadacapo" title="User:Ariadacapo">Olivier Cleynen</a> based on <a href="//commons.wikimedia.org/wiki/File:MD_500C_orthographical_image.svg" class="mw-redirect" title="File:MD 500C orthographical image.svg">File:MD 500C orthographical image.svg</a> by <a href="//commons.wikimedia.org/wiki/User:FOX_52" title="User:FOX 52">FOX 52</a>