1. What is Clearway Distance?

Clearway Distance is the difference between takeoff distance available (TODA) and takeoff run available (TORA). It represents the additional distance beyond the runway that is available for aircraft takeoff procedures.

2. How Does the Calculator Work?

The calculator uses the Clearway Distance formula:

Where:

• \( Takeoff Distance \) — Distance from where the vehicle leaves the ground until it reaches 50 ft (or 15 m)
• \( Liftoff Distance \) — Portion of takeoff procedure during which the airplane is accelerated from standstill to airspeed that provides sufficient lift

Explanation: The formula calculates the additional distance available beyond the runway for safe takeoff operations, accounting for the aircraft's acceleration and lift-off characteristics.

3. Importance of Clearway Distance Calculation

Details: Accurate Clearway Distance calculation is crucial for aircraft performance planning, runway design, and ensuring safe takeoff operations, particularly when dealing with limited runway lengths or obstacle clearance requirements.

4. Using the Calculator

Tips: Enter Takeoff Distance and Liftoff Distance in meters. Both values must be positive numbers for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between TODA and TORA?
A: TORA (Takeoff Run Available) is the length of runway available for takeoff roll, while TODA (Takeoff Distance Available) includes both runway and clearway for aircraft to reach 50 ft altitude.

Q2: Why is the 1.15 factor used in the formula?
A: The 1.15 factor accounts for the safety margin required in aviation calculations, ensuring adequate distance for safe takeoff operations.

Q3: When is clearway distance particularly important?
A: Clearway distance becomes critical at airports with shorter runways, during hot/high altitude operations, or when operating aircraft with higher takeoff performance requirements.

Q4: Are there regulatory requirements for clearway?
A: Yes, aviation authorities like FAA and EASA have specific regulations governing clearway requirements based on aircraft type and airport conditions.

Q5: How does clearway affect aircraft performance?
A: Adequate clearway allows aircraft to achieve required climb gradients and obstacle clearance, enabling operations from runways that might otherwise be too short.