1. What is Distance to Clear 35 ft Obstacle?

Distance to Clear 35 ft Obstacle is defined as the distance required to clear an 11 m (35 ft.) imaginary obstacle on the runway. This is a critical safety parameter in aviation that ensures aircraft have sufficient runway length to safely take off and clear obstacles.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Takeoff Run in Clearway - The distance traveled by an airplane from the commencement of takeoff to the point when it leaves the ground or water
• Clearway Distance - The difference between takeoff distance available (TODA) and takeoff run available (TORA)

Explanation: This formula calculates the total distance required for an aircraft to safely clear a 35-foot obstacle by combining the takeoff run distance with the additional clearway distance available.

3. Importance of Distance Calculation

Details: Accurate calculation of the distance to clear 35 ft obstacle is crucial for flight safety, runway design, aircraft performance assessment, and compliance with aviation regulations. It ensures that aircraft have adequate runway length for safe takeoff operations.

4. Using the Calculator

Tips: Enter the takeoff run in clearway and clearway distance in meters. Both values must be valid non-negative numbers. The calculator will compute the total distance required to clear a 35-foot obstacle.

5. Frequently Asked Questions (FAQ)

Q1: Why is 35 feet used as the standard obstacle height?
A: 35 feet (approximately 11 meters) is an international aviation standard that represents typical obstacle heights near runways and ensures a safe margin for aircraft clearance during takeoff.

Q2: What factors affect the takeoff run in clearway?
A: Aircraft weight, air temperature, runway slope, wind conditions, and aircraft configuration all significantly impact the takeoff run distance.

Q3: How is clearway distance determined?
A: Clearway distance is calculated as the difference between takeoff distance available (TODA) and takeoff run available (TORA) at an airport.

Q4: Are there different standards for different aircraft types?
A: While the 35-foot obstacle clearance is a general standard, specific aircraft may have additional requirements based on their performance characteristics and regulatory certifications.

Q5: How often should these calculations be performed?
A: These calculations should be performed for every flight, as conditions such as temperature, weight, and wind can vary significantly between operations.