Glide Ratio

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Equation / Last modified by EmilyB on 2016/08/12 12:58
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The Glide Ratio is the ratio of distance forward to distance downwards when a glider is flown at a constant speed in still air. The glide ratio varies with air speed, but there is a maximum value which is frequently quoted. Glide ratio usually varies little with vehicle load; a heavier vehicle glides faster, but nearly maintains its glide ratio. 

The following formula is used: `epsilon=(DeltaS)/(DeltaH)`, where:

  • `DeltaS` = distance of forward travel
  • `DeltaH` = altitude lost in forward travel

References


Wikipedia (https://en.wikipedia.org/wiki/Gliding_flight#Glide_ratio)