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`epsilon = ( DeltaS )/( DeltaH )`

Enter a value for all fields

The **Glide Ratio** calculator computes the glide ratio based on the change in forward distance and the change in altitude.

**INSTRUCTION:** Choose units and enter the following:

- (
**ΔS**) Forward Distance Traveled. - (
**ΔH**) Change in Altitude.

**Glide Ratio (ε):** The calculator returns the Glide Ratio as a real number.

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:

**ε = ΔS** /** ΔH**

where:

**ε**= Glide Ratio**ΔS**= distance of forward travel**ΔH**= altitude change in forward travel

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