Created By : Abhinandan Kumar

Reviewed By : Rajashekhar Valipishetty

Last Updated : May 17, 2023

The lift coefficient calculator uses the lift force as well as the dynamic parameters surrounding the wings, such as fluid density and flow speed, to calculate the coefficient of lift. The lift equation is used by aeronautical engineers and RC aircraft hobbyists to calculate the wingspan/area or lift coefficient of their designs. Continue reading to learn how to use our calculator and how to compute the lift coefficient formula.

Lift Force (F)
Flow speed (V)
Surface Area (A)

What does the term Lift Coefficient mean?

The lift coefficient is the relationship between the lift force and the product of surface area and dynamic pressure surrounding the lifting surface. It is a quantity with no units and no dimensions. For a surface with surface area A, fluid dynamic pressure q, and lift force F, the lift coefficient CL can be stated as CL = F /(A x q)

For a fluid with density and flow speed V, the dynamic pressure q can be expressed as q = 1/2 x ρ x V^2. As a result, the formula for calculating the lift coefficient CL = 2 x F / (A x ρ x V^2)

How do I calculate the Coefficient of Lift?

To use the coefficient of lift equation, follow these four simple steps.

  • Step 1: Put the lift force.
  • Step 2: Enter the flow speed.
  • Step 3: Enter the lifting surfaces and surface area.
  • Step 4: If the medium isn't air, set the default density of air value to the required value.
  • Step 5: The calculator will now return the lift coefficient value using the coefficient of lift equation.

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Factors affecting Aircraft's Lift Force

The amount of lift force required to fly is determined by various factors, including:

  • Weight: What is the aircraft's weight? This covers the empty weight of the ship as well as any onboard cargo. It's also utilized to find out how much weight is on the wings.
  • Speed: The speed at which it is traveling. If it goes too slowly, there's a chance it won't be able to produce enough lift force to fly. As a result, every plane has a stall speed. The stall speed is the slowest speed required to maintain level flight.
  • Density: Aircraft behave differently depending on the density of the air. Changes in height, temperature, and other meteorological factors produce these fluctuations in air density. As a result, the service altitude ceiling values for different types of aircraft vary.

FAQs on Lift Coefficient Calculator

1. How do you calculate the highest lift coefficient?

The maximum lift coefficient of an airfoil is determined by its geometry. The maximum lift coefficient increases as the camber become more apparent. The maximum lift coefficient will be lower if the leading edge radius is less.

2. What is the purpose of a lift coefficient?

The Coefficient of Lift. Aerodynamicists utilize the lift coefficient to model all of the intricate relationships between shape, tilt, as well as some flow conditions and lift.

3. How drag is affected by the size of the object?

The quantity of drag caused by an object is proportional to its size. Drag is an aerodynamic force that is determined by the pressure variations in the air surrounding the body as it passes through it.

4. How to find out the coefficient of lift?

To find the coefficient of lift, use the following steps:

  • Step 1: Divide the product by 2 after multiplying fluid pressure by velocity squared.
  • Step 2: Multiply the surface area by the product before it.
  • Step 3: Divide the product from the lift force.