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Drag Force Formula

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Drag Force is the resisting force experienced by an object moving through a fluid. Check FAQs

F D = C D \cdot q \cdot A

F_D - Drag Force?C_D - Drag Coefficient?q - Dynamic Pressure?A - Area For Flow?

Drag Force Example

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With units

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Here is how the Drag Force equation looks like with Values.

Here is how the Drag Force equation looks like with Units.

Here is how the Drag Force equation looks like.

80 = 0.16 \cdot 10 \cdot 50

80N = 0.16 \cdot 10Pa \cdot 50m²

80 = 0.16 \cdot 10 \cdot 50

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Drag Force Solution

Follow our step by step solution on how to calculate Drag Force?

FIRST Step Consider the formula

F D = C D \cdot q \cdot A

Next Step Substitute values of Variables

∴

F D = 0.16 \cdot 10Pa \cdot 50m²

Next Step Prepare to Evaluate

∴

F D = 0.16 \cdot 10 \cdot 50

LAST Step Evaluate

∴

F D = 80N

Drag Force Formula Elements

Variables

Drag Force

Drag Force is the resisting force experienced by an object moving through a fluid.

Symbol: F_D

Measurement: ForceUnit: N

Note: Value can be positive or negative.

Formulas to find Drag Force

Drag Coefficient

Drag Coefficient is a dimensionless quantity that is used to quantify the drag or resistance of an object in a fluid environment, such as air or water.

Symbol: C_D

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Drag Coefficient

Dynamic Pressure

Dynamic Pressure is simply a convenient name for the quantity which represents the decrease in the pressure due to the velocity of the fluid.

Symbol: q

Measurement: PressureUnit: Pa

Note: Value should be greater than 0.

Formulas to find Dynamic Pressure

Area For Flow

Area For Flow decreases velocity increases and vice versa. For subsonic flows, M < 1, the behavior resembles that for incompressible flows.

Symbol: A

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Area For Flow

Other formulas in Hypersonic Flow Parameters category

Go Axial Force Coefficient

μ = \frac{F}{q \cdot A}

Go Coefficient of Drag

C D = \frac{F D}{q \cdot A}

Go Coefficient of Pressure with Similarity Parameters

C p = 2 \cdot θ^{2} \cdot (\frac{Y + 1}{4} + \sqrt{{(\frac{Y + 1}{4})}^{2} + \frac{1}{K^{2}}})

Go Deflection Angle

θ d = \frac{2}{Y - 1} \cdot (\frac{1}{M 1} - \frac{1}{M 2})

How to Evaluate Drag Force?

Drag Force evaluator uses Drag Force = Drag Coefficient*Dynamic Pressure*Area For Flow to evaluate the Drag Force, Drag Force formula is defined as a measure of the resistance to the motion of an object through a fluid, typically air or water, resulting from the interaction between the object and the fluid, and is a critical parameter in the study of hypersonic flow and aerodynamics. Drag Force is denoted by F_D symbol.

How to evaluate Drag Force using this online evaluator? To use this online evaluator for Drag Force, enter Drag Coefficient (C_D), Dynamic Pressure (q) & Area For Flow (A) and hit the calculate button.

FAQs on Drag Force

What is the formula to find Drag Force?

The formula of Drag Force is expressed as Drag Force = Drag Coefficient*Dynamic Pressure*Area For Flow. Here is an example- 15000 = 0.16*10*50.

How to calculate Drag Force?

With Drag Coefficient (C_D), Dynamic Pressure (q) & Area For Flow (A) we can find Drag Force using the formula - Drag Force = Drag Coefficient*Dynamic Pressure*Area For Flow.

Can the Drag Force be negative?

Yes, the Drag Force, measured in Force can be negative.

Which unit is used to measure Drag Force?

Drag Force is usually measured using the Newton[N] for Force. Exanewton[N], Meganewton[N], Kilonewton[N] are the few other units in which Drag Force can be measured.

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