Elevator Stick Force Given Hinge Moment Coefficient Calculator

Formula Used:

\[ \text{Stick Force} = \text{Gearing Ratio} \times \text{Hinge Moment Coefficient} \times 0.5 \times \text{Density} \times \text{Flight Velocity}^2 \times \text{Elevator Chord} \times \text{Elevator Area} \] \[ F = R \times C_{he} \times 0.5 \times \rho \times V^2 \times c_e \times S_e \]

Gearing Ratio (R):

1/m

Hinge Moment Coefficient (C_he):

Density (ρ):

kg/m³

Flight Velocity (V):

m/s

Elevator Chord (c_e):

Elevator Area (S_e):

m²

Stick Force (F):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Elevator Stick Force?

The elevator stick force is the force exerted by the pilot on the control column to move the elevator control surface. This force is crucial for aircraft control and stability during flight operations.

2. How Does the Calculator Work?

The calculator uses the following formula:

\[ F = R \times C_{he} \times 0.5 \times \rho \times V^2 \times c_e \times S_e \]

Where:

\( F \) — Stick Force (N)
\( R \) — Gearing Ratio (1/m)
\( C_{he} \) — Hinge Moment Coefficient
\( \rho \) — Density (kg/m³)
\( V \) — Flight Velocity (m/s)
\( c_e \) — Elevator Chord (m)
\( S_e \) — Elevator Area (m²)

Explanation: The formula calculates the stick force required to overcome the aerodynamic hinge moment of the elevator control surface.

3. Importance of Stick Force Calculation

Details: Accurate stick force calculation is essential for aircraft design, ensuring proper control response and pilot workload management during various flight conditions.

4. Using the Calculator

Tips: Enter all required parameters with appropriate units. Ensure all values are positive and within reasonable ranges for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What is gearing ratio in aircraft controls?
A: Gearing ratio represents the mechanical advantage in the control system, relating control surface deflection to control column movement.

Q2: How does flight velocity affect stick force?
A: Stick force increases with the square of flight velocity due to the dynamic pressure term in the calculation.

Q3: What factors influence hinge moment coefficient?
A: Hinge moment coefficient depends on control surface geometry, angle of attack, and deflection angle.

Q4: Why is density important in this calculation?
A: Density affects the dynamic pressure and therefore the aerodynamic forces acting on the control surface.

Q5: How does elevator area impact stick force?
A: Larger elevator areas generally require higher stick forces due to increased aerodynamic loading.