PPRuNe Forums - View Single Post - Aeromexico Crash
View Single Post
Old 7th Sep 2018, 03:30
  #138 (permalink)  
RatherBeFlying
 
Join Date: Sep 2001
Location: Toronto
Posts: 2,559
Received 39 Likes on 18 Posts
Headwind shears from sim photos

MM:SS Hdg A/S G/S Wθ xWθ WV HW =cos(xWθ)*WV
22:42 32 146 122 47 15 33 32
22:47 34 144 139 63 29 18 16
22:50 32 145 146 103 71 11 4
22:56 30 124 159 204 174 21-21
22:57 30 127 162 220 190 24-24

Unfortunately the source tag fails to put out a fixed pitch font. Mods, feel welcome to fix

Note the change in airspeed and groundspeed in close step with headwind component - a signature of windshear incidents and accidents.

While these photos are at variable intervals, they do show a - 56 kt h/w shear over 15 seconds.
RatherBeFlying is offline