Track of Main Undercarriage given Radius of Fillet Calculator

Track of Main Undercarriage Formula:

\[ T = -2 \times (r - R + \gamma + M) \]

Radius of Fillet (r):

Radius of Taxiway Centerline (R):

Deviation of Main Undercarriage (γ):

Minimum Safety Margin (M):

Track of Main Undercarriage (T): m

1. What is Track of Main Undercarriage?

Definition: The track of main undercarriage refers to the distance between the center points of the main landing gear wheels on an aircraft.

Purpose: This calculation is crucial for airport design to ensure safe taxiing operations and proper clearance on taxiways.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ T = -2 \times (r - R + \gamma + M) \]

Where:

\( T \) — Track of main undercarriage (meters)
\( r \) — Radius of fillet (meters)
\( R \) — Radius of taxiway centerline (meters)
\( \gamma \) — Deviation of main undercarriage (meters)
\( M \) — Minimum safety margin (meters)

Explanation: The formula calculates the required track width considering various geometric and safety factors in airport taxiway design.

3. Importance of Track Calculation

Details: Proper track calculation ensures aircraft can safely maneuver on taxiways without risk of collision with edges or other obstacles.

4. Using the Calculator

Tips: Enter all required dimensions in meters. The ±5% indicates the acceptable tolerance range for each measurement.

5. Frequently Asked Questions (FAQ)

Q1: Why is the formula multiplied by -2?
A: The negative sign accounts for the geometric relationship, and the 2 accounts for both sides of the aircraft.

Q2: What's a typical safety margin for aircraft taxiing?
A: Safety margins typically range from 3-15 meters depending on aircraft size and airport standards.

Q3: How do I determine the radius of fillet?
A: Fillet radius is determined by aircraft turning characteristics and airport design standards.

Q4: What affects the deviation of main undercarriage?
A: Factors include aircraft design, tire characteristics, and pavement conditions.

Q5: Why is taxiway centerline radius important?
A: It determines the minimum turning radius the aircraft must follow during taxi operations.