1. What is Stall Velocity?

Stall Velocity is defined as the velocity of an airplane in steady flight at its maximum lift coefficient. It represents the minimum speed at which an aircraft can maintain level flight.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( V_{stall} \) — Stall Velocity (m/s)
• \( V_T \) — Touchdown Velocity (m/s)

Explanation: The formula calculates the stall velocity by dividing the touchdown velocity by a safety factor of 1.3, which is a standard aviation safety margin.

3. Importance of Stall Velocity Calculation

Details: Calculating stall velocity is crucial for aircraft design, flight safety, and determining appropriate approach and landing speeds to prevent stalling during critical flight phases.

4. Using the Calculator

Tips: Enter the touchdown velocity in meters per second (m/s). The value must be a positive number greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why is the safety factor 1.3 used?
A: The factor 1.3 provides a safety margin to ensure the aircraft operates well above its stall speed during landing, reducing the risk of stalling.

Q2: What is the relationship between touchdown and stall velocity?
A: Touchdown velocity is typically 1.3 times the stall velocity, providing a safe buffer for landing operations.

Q3: How does aircraft weight affect stall velocity?
A: Heavier aircraft have higher stall velocities as they require more lift to maintain flight, which is achieved at higher speeds.

Q4: Can this formula be used for all aircraft types?
A: While the 1.3 factor is standard for most aircraft, specific aircraft may have different safety margins based on their design and certification requirements.

Q5: What units should be used for input values?
A: The calculator uses meters per second (m/s) for velocity inputs. Convert from other units if necessary before calculation.