Vs is the Velocity (V) of the Stall (s), or minimum steady flight speed for which the aircraft is still controllable. The beginning of the Green Arc is the power off Stalling Speed with the Gear and Flaps retracted. Now that you are familiar with Vs0, it’s easy to remember Vs1. Gear Down and Flaps Down) An easy way to remember this is to think of the Velocity (V) of Stall (s) with everything hanging Out (0) or Vs0. The Vs0 (Velocity Stall 0) represents the Stalling Speed of the aircraft configured for landing.
#172P V SPEEDS FINAL APPROACH SPEEW WITH FLAPS FULL#
The beginning of the White Arc is the power off Stalling Speed with gear and full flaps extended, also known as Vs0. Flaps may only be used within this range of speeds. The Flaps Operating Range is denoted by the White Arc. Remember, this is just an example, and the V-Speeds will differ based on the exact type, model and configuration of aircraft you fly. Let’s take a closer look, to determine some of these important V-Speeds. Pictured is a sample ‘Steam Gauge’ Airspeed Indicator. You will notice the colour-coded bands or arcs on the Airspeed Indicator. These are displayed as color-coded arcs and lines located on the face of an aircraft’s airspeed indicator flight instrument.
General aviation aircraft depict the most commonly-used and most safety-critical airspeeds or V-Speeds on the Airspeed Indicator. This helps the pilot to visually recognize these V-Speeds and easily determine how close they are to the V-Speeds while in flight. Pilots should consult the Pilot’s Operating Handbook, or POH, for the aircraft they fly. These important V-Speeds will be published in the POH (Information Manual) for their specific Aircraft type and model.įortunately, the Airspeed Indicator in your airplane will have some of the more important V-Speeds highlighted or emphasized directly on the dial of the flight instrument.
Pilots should be knowledgeable about the published V-Speeds for each type and configuration of aircraft they fly. Recommended Velocity Speeds (V-Speeds) are published and these airspeeds are relied on for best performance and safety of the aircraft. The resulting flight test data is used to help determine specific best practice speeds for safe operation of the aircraft. Therefore these standard Airspeeds (Velocity) are defined as V-Speeds where the V is for Velocity.Īircraft designers and manufacturers perform flight tests to help determine performance limitations of aircraft. Scientists and Engineers refer to Speed as Velocity. Important aviation Airspeeds are identified and defined using standard terms. Your Aviation Acronym Decoder begins with some talk about Velocity. With Airspeeds and V-Speeds, there are dozens of Aviation Acronyms for the student pilot to learn and remember. Airspeed Limitations, Manoeuvring Speeds and PerformanceĪviation Acronyms can seem like Alphabet Soup!
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