1. What is Taxiway Width Calculator?

Definition: This calculator determines the required width of an airport taxiway based on aircraft undercarriage dimensions, safety margins, and maximum permissible deviation.

Purpose: It helps airport engineers design taxiways that safely accommodate aircraft movements while considering operational factors.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( TW \) — Taxiway Width (meters)
• \( \lambda \) — Maximum Deviation without Filleting (meters)
• \( M \) — Minimum Safety Margin (meters)
• \( T \) — Track of Main Undercarriage (meters)

Explanation: The formula accounts for aircraft track width, safety margins, and potential pilot deviation from centerline.

3. Importance of Taxiway Width Calculation

Details: Proper taxiway width ensures safe aircraft movement, prevents wingtip collisions, and accommodates various aircraft types.

4. Using the Calculator

Tips: Enter the maximum deviation (typically 4.1m for Code E aircraft), safety margin (usually 4.5m), and main undercarriage track width (e.g., 7m for Boeing 747). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is maximum deviation without filleting?
A: The maximum lateral distance an aircraft may deviate from taxiway centerline without needing curved fillets at intersections.

Q2: How is safety margin determined?
A: It's based on aircraft type, pilot experience, and airport conditions. ICAO recommends 4.5m for Code E aircraft (±5%).

Q3: Where do I find undercarriage track width?
A: Aircraft technical manuals or airport design references provide this data for common aircraft types.

Q4: Does this include clearance for wingtips?
A: Yes, the safety margin accounts for wingtip clearance in addition to undercarriage position.

Q5: How does this relate to ICAO standards?
A: The formula aligns with ICAO Annex 14 recommendations for taxiway design.

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