A view of the #3 engine (Pratt &amp; Whitney JT9D turbofan) of a Boeing 747-100. The reversers are seen deployed.
<a href="//commons.wikimedia.org/wiki/User:Ariadacapo" title="User:Ariadacapo">Olivier Cleynen</a>
<span class="int-own-work" lang="en">Own work</span>