Radius of Taxiway Centerline given Radius of Fillet Calculator

Radius of Taxiway Centerline Formula:

\[ R = r + (\gamma + M + \frac{T}{2}) \]

Radius of Fillet (r):

Deviation of Main Undercarriage (γ):

Minimum Safety Margin (M):

Track of Main Undercarriage (T):

Radius of Taxiway Centerline (R): m

1. What is Radius of Taxiway Centerline?

Definition: The radius of the taxiway centerline is a critical design parameter that ensures safe aircraft movement on taxiways.

Purpose: It helps airport engineers design taxiways that accommodate the turning radius of aircraft while maintaining safety margins.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ R = r + (\gamma + M + \frac{T}{2}) \]

Where:

\( R \) — Radius of Taxiway Centerline (meters)
\( r \) — Radius of Fillet (meters)
\( \gamma \) — Deviation of Main Undercarriage (meters)
\( M \) — Minimum Safety Margin (meters)
\( T \) — Track of Main Undercarriage (meters)

Explanation: The formula accounts for the aircraft's undercarriage geometry and adds safety margins to determine the appropriate taxiway radius.

3. Importance of Taxiway Radius Calculation

Details: Proper radius calculation ensures aircraft can navigate turns safely without undercarriage overhang or wingtip collisions.

4. Using the Calculator

Tips: Enter all required dimensions in meters. Values are typically accurate within ±5%. All inputs must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the fillet radius in taxiway design?
A: The fillet radius is the curved transition between intersecting taxiways or between taxiways and runways.

Q2: Why is undercarriage deviation important?
A: It accounts for the lateral displacement of the main gear during turns, which affects the required taxiway width.

Q3: How is safety margin determined?
A: Safety margins are based on aircraft type, taxi speed, and airport design standards (typically ICAO or FAA).

Q4: What affects the track of main undercarriage?
A: The track varies by aircraft model and is the distance between the left and right main gear.

Q5: Are there standard values for these parameters?
A: Yes, but they vary by aircraft type. Consult aircraft technical manuals or airport design guidelines.