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Old 8th Sep 2015, 23:13
  #8 (permalink)  
Chu Chu
 
Join Date: Feb 2009
Location: Virginia
Posts: 2,101
Received 31 Likes on 25 Posts
I can't find a good reference to link to, but I've read in several reports about ships with propellers in steerable pods that were designed to "crash stop" by turning the pods 90 degrees inward or outward. I don't understand why that works. But presumably its more effective at higher speed (a stationary ship that set its pods that way would not accelerate at all).

Whatever the phenomenon, it could be related to why thrust reversers are more effective at high speed -- at least they also create a lot of sideways flow.
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