Stall Speed Calculator

Formula

The formula to calculate the stall speed is:

\[ V = \sqrt{\frac{2L}{Cl \cdot p \cdot S}} \]

Where:

\( V \) is the Stall Speed (m/s)
\( L \) is the Lift Force (N)
\( Cl \) is the Coefficient of Lift
\( p \) is the Air Density (kg/m³)
\( S \) is the Surface Area of Wings (m²)

What is Stall Speed?

Stall speed is defined as the velocity of an aircraft at which the lift force becomes equal to the force of gravity. It is a critical parameter in aviation for ensuring safe flight operations.

Example Calculation

Let's assume the following values:

Lift Force (L): 5000 N
Coefficient of Lift (Cl): 1.2
Air Density (p): 1.225 kg/m³
Surface Area of Wings (S): 20 m²

Using the formula to calculate the stall speed:

\[ V = \sqrt{\frac{2 \times 5000}{1.2 \times 1.225 \times 20}} \approx 22.36 \text{ m/s} \]

The stall speed is approximately 22.36 m/s.