PPRuNe Forums - View Single Post - When practicing vortex ring.........
View Single Post
Old 3rd Jul 2012, 18:51
  #68 (permalink)  
[email protected]
 
Join Date: Apr 2000
Location: EGDC
Posts: 10,349
Received 635 Likes on 277 Posts
Wind tunnel tests also show that your RoD has to be at least half of your downwash speed, preferably in excess of 0.6.
crab@SAAvn.co.uk is offline