1. What is Change in Angle of Attack due to Upward Gust?

The change in angle of attack due to upward gust refers to the alteration in the angle between the chord line of an airfoil and the relative wind caused by an upward gust of wind. This change affects the lift and stability of an aircraft.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \Delta\alpha \) — Change in Angle of Attack (radians)
• \( u \) — Gust Velocity (m/s)
• \( V \) — Flight Velocity (m/s)

Explanation: The tangent function calculates the angle change based on the ratio of gust velocity to flight velocity.

3. Importance of Angle of Attack Calculation

Details: Accurate calculation of angle of attack changes is crucial for aircraft stability analysis, gust response prediction, and flight control system design.

4. Using the Calculator

Tips: Enter gust velocity and flight velocity in m/s. Both values must be positive and non-zero. The result is provided in both radians and degrees.

5. Frequently Asked Questions (FAQ)

Q1: Why use the tangent function in this calculation?
A: The tangent function accurately relates the ratio of gust velocity to flight velocity to the resulting angle change in a right triangle configuration.

Q2: What are typical values for gust velocity?
A: Gust velocities typically range from 5-20 m/s, though extreme conditions can produce higher values.

Q3: How does this affect aircraft performance?
A: Increased angle of attack from upward gusts increases lift momentarily, which can cause altitude changes and affect stability.

Q4: Are there limitations to this formula?
A: This formula provides an idealized calculation and may not account for all aerodynamic factors in complex gust scenarios.

Q5: Can this be used for downward gusts as well?
A: Yes, downward gusts would produce a negative change in angle of attack, calculated similarly but with appropriate sign consideration.