Experimenting on how low a shutter speed is needed to get some decent prop blur on this magnificent beast, turns out 1/80th but lose alot of sharpness to the image :-(
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/24874528@N04">Airwolfhound</a> from  Hertfordshire, UK
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/24874528@N04/20151863691/">CV-22 Osprey - RIAT 2015</a>