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captain007

Well-known member
Joined
Oct 16, 2007
Posts
141
Climb Gradient into %.

Is it Ft/nm / 6079? For what ground speed?

Isn't there also an easier way?


Thanks for all the info.
 
Climb gradient is usually expressed in percent or ft/NM. If you have a gradient that's in "percent", you can convert it to "ft/NM" by multiplying the gradient by 6076.1. Conversely, you can convert a gradient that's expressed in ft/NM to "percent" by dividing by 6076.1 and multiplying the result by 100.

For instance, 4.2% is 255 ft/NM (0.042 x 6076.1 = 255).

Second example: 400 ft/NM is a gradient of 6.58% (400/6076.1*100).
 
to add to this....if you're then asked "well what's my VSI going to read with a Single Engine"?

Gradient % x ground speed = Ft/Min.

ex. 6.3% x 140 kts (beechjet) = 882 FPM. (VSI with Single Engine)
 

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