1. What is Stick Deflection Angle?

Stick Deflection Angle is the angle made by the control stick (used to move control surface) of an aircraft with the vertical. It represents the physical displacement of the control stick required to achieve a specific control surface deflection.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \delta_s \) — Stick Deflection Angle (rad)
• \( H \) — Hinge Moment (N·m)
• \( \delta_e \) — Elevator Deflection Angle (rad)
• \( F \) — Stick Force (N)
• \( l_s \) — Stick Length (m)

Explanation: This formula calculates the stick deflection angle based on the hinge moment, elevator deflection, stick force, and stick length parameters.

3. Importance of Stick Deflection Angle Calculation

Details: Accurate calculation of stick deflection angle is crucial for aircraft control system design, pilot workload assessment, and ensuring proper control response characteristics in flight.

4. Using the Calculator

Tips: Enter hinge moment in N·m, elevator deflection angle in radians, stick force in Newtons, and stick length in meters. All values must be positive and valid.

5. Frequently Asked Questions (FAQ)

Q1: What factors affect stick deflection angle?
A: Stick deflection angle is influenced by hinge moment characteristics, control surface effectiveness, stick mechanical advantage, and pilot applied force.

Q2: How does stick length affect deflection angle?
A: Longer stick lengths generally require smaller deflection angles for the same control surface movement due to increased mechanical advantage.

Q3: What are typical stick deflection angle ranges?
A: Typical stick deflection angles vary by aircraft type but generally range from 15-30 degrees in each direction for conventional aircraft.

Q4: How does hinge moment affect stick forces?
A: Higher hinge moments require greater stick forces to achieve the same control surface deflection, which affects pilot workload and control feel.

Q5: Are there limitations to this calculation?
A: This calculation assumes linear relationships and may need adjustment for non-linear control systems, friction, and aerodynamic effects at extreme deflections.