AVIATION & AERONAUTIC CALCULATOR
Vref Speed
A precise tool.
What is the Vref Speed & How does it work?
The reference landing speed, Vref, is a critical parameter in aviation that represents the minimum speed at which an aircraft can safely land. It is typically calculated as 1.3 times the stalling speed in level flight, Vso.
Vso is influenced by various factors including the weight of the aircraft, air density, and configuration (e.g., flaps setting). Understanding Vref helps pilots manage their approach speed to ensure a safe landing.
V_{ref} = 1.3 times V_{so}
Vref = Reference landing speed
Vso = Stalling speed in level flight
Vso = Stalling speed in level flight
Parameters
Result
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Frequently Asked Questions
What is Vref in aviation?
Vref, or reference landing speed, is the minimum safe speed at which an aircraft can land, typically 1.3 times the stalling speed (Vso).
How do I calculate Vref?
To calculate Vref, multiply the stalling speed in level flight (Vso) by 1.3.
What factors affect Vso?
Vso is influenced by aircraft weight, air density, and configuration such as flaps setting.
Why is Vref important for pilots?
Understanding Vref helps pilots manage their approach speed to ensure a safe landing.
Can I use this calculator for any aircraft?
This calculator provides a general guideline. Always refer to your specific aircraft’s manual for precise calculations.
What does Vso stand for in aviation?
Vso stands for stalling speed in level flight, which is the minimum speed at which an aircraft can maintain controlled flight.
How does air density affect Vref?
Higher air density increases the stalling speed (Vso), thus increasing Vref. Lower air density has the opposite effect.
Results are for informational purposes only and do not constitute professional advice.