PPRuNe Forums - View Single Post - CRP-5 Wind Side Calculations Help Please
View Single Post
Old 28th Nov 2007, 21:01
  #6 (permalink)  
Whirlygig

Hovering AND talking
 
Join Date: Feb 2003
Location: Propping up bars in the Lands of D H Lawrence and Bishop Bonner
Age: 59
Posts: 5,705
Likes: 0
Received 0 Likes on 0 Posts
Given wind and heading, track is easy but given wind and track, you need to employ a "shuffle" method - best to get an instructor to show you this but, in your example, I made the initial drift to be 10 degrees so move the bezel back to 75 degrees. Reading off from W/V at 36kts, gave me a drift of 7 degrees. 7 degrees plus 75 = 82, not 85 so move the bezel another degree to 76 gives a drift of 7 (and a bit), shuffle again to 77 degrees, drift = 8 degrees which equals track of 085.

I think that's also what is meant by balancing the drift; you sort of have to work backwards.

Cheers

Whirls
Whirlygig is offline