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Glide Angle is defined as the angle made by the glide flight path with the horizontal. Check FAQs
θ=atan(FDFL)
θ - Glide Angle?FD - Drag Force?FL - Lift Force?

Glide angle Example

With values
With units
Only example

Here is how the Glide angle equation looks like with Values.

Here is how the Glide angle equation looks like with Units.

Here is how the Glide angle equation looks like.

0.15Edit=atan(15.11Edit100Edit)
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Glide angle Solution

Follow our step by step solution on how to calculate Glide angle?

FIRST Step Consider the formula
θ=atan(FDFL)
Next Step Substitute values of Variables
θ=atan(15.11N100N)
Next Step Prepare to Evaluate
θ=atan(15.11100)
Next Step Evaluate
θ=0.149965568243607rad
LAST Step Rounding Answer
θ=0.15rad

Glide angle Formula Elements

Variables
Functions
Glide Angle
Glide Angle is defined as the angle made by the glide flight path with the horizontal.
Symbol: θ
Measurement: AngleUnit: rad
Note: Value can be positive or negative.
Drag Force
Drag Force is the resisting force experienced by an object moving through a fluid.
Symbol: FD
Measurement: ForceUnit: N
Note: Value should be greater than 0.
Lift Force
The Lift Force, lifting force or simply lift is the sum of all the forces on a body that force it to move perpendicular to the direction of flow.
Symbol: FL
Measurement: ForceUnit: N
Note: Value should be greater than 0.
tan
The tangent of an angle is a trigonometric ratio of the length of the side opposite an angle to the length of the side adjacent to an angle in a right triangle.
Syntax: tan(Angle)
atan
Inverse tan is used to calculate the angle by applying the tangent ratio of the angle, which is the opposite side divided by the adjacent side of the right triangle.
Syntax: atan(Number)

Other Formulas to find Glide Angle

​Go Glide angle for given lift-to-drag ratio
θ=atan(1LD)

Other formulas in Gliding Flight category

​Go Lift Force for given Glide Angle
FL=FDtan(θ)
​Go Lift-to-drag ratio for given glide angle
LD=1tan(θ)
​Go Drag for given Glide Angle
FD=FLtan(θ)
​Go Weight of Glider
Wg=FLcos(θ)+FDsin(θ)

How to Evaluate Glide angle?

Glide angle evaluator uses Glide Angle = atan(Drag Force/Lift Force) to evaluate the Glide Angle, The Glide angle formula it is the angle between the horizontal plane and the flight path of the aircraft during gliding flight, it represents the angle of descent or descent rate of the aircraft relative to the horizontal. Glide Angle is denoted by θ symbol.

How to evaluate Glide angle using this online evaluator? To use this online evaluator for Glide angle, enter Drag Force (FD) & Lift Force (FL) and hit the calculate button.

FAQs on Glide angle

What is the formula to find Glide angle?
The formula of Glide angle is expressed as Glide Angle = atan(Drag Force/Lift Force). Here is an example- 0.066004 = atan(15.11/100).
How to calculate Glide angle?
With Drag Force (FD) & Lift Force (FL) we can find Glide angle using the formula - Glide Angle = atan(Drag Force/Lift Force). This formula also uses Tangent (tan), Inverse Tan (atan) function(s).
What are the other ways to Calculate Glide Angle?
Here are the different ways to Calculate Glide Angle-
  • Glide Angle=atan(1/Lift-to-drag Ratio)OpenImg
Can the Glide angle be negative?
Yes, the Glide angle, measured in Angle can be negative.
Which unit is used to measure Glide angle?
Glide angle is usually measured using the Radian[rad] for Angle. Degree[rad], Minute[rad], Second[rad] are the few other units in which Glide angle can be measured.
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