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-   -   Maths Helper - Find Speed from plot of Distance and Time (http://www.subsim.com/radioroom/showthread.php?t=241155)

Elphaba 05-13-2019 02:36 AM

Maths Helper - Find Speed from plot of Distance and Time
 
Find Speed

1. Get Total Distance in Metres
2. Get Total Seconds: Sum ( Hours multiplied by 3600, minutes multiplied by 60 and seconds )
3. Get Corrected Time: Multiply Total Seconds by 0.5144.
4. Get Speed in Knots: Divide Total Distance in Metres by Corrected Time

Hope that helps.

derstosstrupp 05-13-2019 06:18 AM

Quote:

Originally Posted by Elphaba (Post 2609031)
Find Speed

1. Get Total Distance in Metres
2. Get Total Seconds: Sum ( Hours multiplied by 3600, minutes multiplied by 60 and seconds )
3. Get Corrected Time: Multiply Total Seconds by 0.5144.
4. Get Speed in Knots: Divide Total Distance in Metres by Corrected Time

Hope that helps.

Very helpful since the TSD function in the map doesn’t use increments of knots. Would be cool to have a nomograph overlay in game too.

Pisces 05-13-2019 10:58 AM

As I also added into discord: If you stick to intervals of 3 minutes and 15 seconds (properly 194.4 seconds) then speed in knots shows itself as a distance in hectometer units (100m) between the plots. As such, 13 minutes is a nice round number period to average the plots over 4 intervals.

If you were to measure in imperial units (yards) then it would require 3 minutes.


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