Transonic tunnel fan blades, with light reflections. Grady McCoy is shown standing next to the fan blades.
NASA/photographer unknown
1990-03-31
<a rel="nofollow" class="external text" href="http://dayton.hq.nasa.gov/IMAGES/LARGE/GPN-2000-001300.jpg">Great Images in NASA</a> <a rel="nofollow" class="external text" href="http://grin.hq.nasa.gov/ABSTRACTS/GPN-2000-001300.html">Description</a>