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Airspeed Measurement by Pitot Tube Formula

GoAirspeed Measurement by Venturi Formula

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Velocity at Point 1 is the velocity of fluid passing through point 1 in flow. Check FAQs

V 1 = \sqrt{\frac{2 \cdot (P 0 - P 1 static)}{ρ 0}}

V₁ - Velocity at Point 1?P₀ - Total Pressure?P_{1 static} - Static Pressure at Point 1?ρ₀ - Density?

Airspeed Measurement by Pitot Tube Example

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Here is how the Airspeed Measurement by Pitot Tube equation looks like with Values.

Here is how the Airspeed Measurement by Pitot Tube equation looks like with Units.

Here is how the Airspeed Measurement by Pitot Tube equation looks like.

0.3167 = \sqrt{\frac{2 \cdot (61710 - 61660)}{997}}

0.3167m/s = \sqrt{\frac{2 \cdot (61710Pa - 61660Pa)}{997kg/m³}}

0.3167 = \sqrt{\frac{2 \cdot (61710 - 61660)}{997}}

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Airspeed Measurement by Pitot Tube Solution

Follow our step by step solution on how to calculate Airspeed Measurement by Pitot Tube?

FIRST Step Consider the formula

V 1 = \sqrt{\frac{2 \cdot (P 0 - P 1 static)}{ρ 0}}

Next Step Substitute values of Variables

∴

V 1 = \sqrt{\frac{2 \cdot (61710Pa - 61660Pa)}{997kg/m³}}

Next Step Prepare to Evaluate

∴

V 1 = \sqrt{\frac{2 \cdot (61710 - 61660)}{997}}

Next Step Evaluate

∴

V 1 = 0.316703177609768m/s

LAST Step Rounding Answer

∴

V 1 = 0.3167m/s

Airspeed Measurement by Pitot Tube Formula Elements

Variables

Functions

Velocity at Point 1

Velocity at Point 1 is the velocity of fluid passing through point 1 in flow.

Symbol: V₁

Measurement: SpeedUnit: m/s

Note: Value can be positive or negative.

Formulas to find Velocity at Point 1

Total Pressure

Total Pressure denotes the sum of static pressure and dynamic pressure in a fluid flow.

Symbol: P₀

Measurement: PressureUnit: Pa

Note: Value should be greater than 0.

Formulas to find Total Pressure

Static Pressure at Point 1

Static pressure at Point 1 refers to the pressure exerted by a fluid at a specific location in a system, where the fluid is not in motion or has zero velocity.

Symbol: P_{1 static}

Measurement: PressureUnit: Pa

Note: Value can be positive or negative.

Formulas to find Static Pressure at Point 1

Density

The Density of a material shows the denseness of that material in a specific given area. This is taken as mass per unit volume of a given object.

Symbol: ρ₀

Measurement: DensityUnit: kg/m³

Note: Value should be greater than 0.

Formulas to find Density

sqrt

A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.

Syntax: sqrt(Number)

Other Formulas to find Velocity at Point 1

Go Airspeed Measurement by Venturi

V 1 = \sqrt{\frac{2 \cdot (P 1 - P 2)}{ρ 0 \cdot ({A lift}^{2} - 1)}}

Other formulas in Aerodynamic Measurements and Wind Tunnel Testing category

Go Wind Tunnel Test Section Velocity

V 2 = \sqrt{\frac{2 \cdot (P 1 - P 2)}{ρ 0 \cdot (1 - \frac{1}{{A lift}^{2}})}}

Go Wind Tunnel Pressure Difference by Manometer

δP = 𝑤 \cdot Δh

Go Wind Tunnel Pressure Difference with Test Speed

δP = 0.5 \cdot ρ air \cdot {V 2}^{2} \cdot (1 - \frac{1}{{A lift}^{2}})

Go Test Section Velocity by Manometric Height for Wind Tunnel

V T = \sqrt{\frac{2 \cdot 𝑤 \cdot Δh}{ρ 0 \cdot (1 - \frac{1}{{A lift}^{2}})}}

How to Evaluate Airspeed Measurement by Pitot Tube?

Airspeed Measurement by Pitot Tube evaluator uses Velocity at Point 1 = sqrt((2*(Total Pressure-Static Pressure at Point 1))/(Density)) to evaluate the Velocity at Point 1, Airspeed Measurement by Pitot Tube is a method used to calculate the velocity of air at a specific point in an incompressible flow by using the difference between total pressure and static pressure, and the density of the fluid. Velocity at Point 1 is denoted by V₁ symbol.

How to evaluate Airspeed Measurement by Pitot Tube using this online evaluator? To use this online evaluator for Airspeed Measurement by Pitot Tube, enter Total Pressure (P₀), Static Pressure at Point 1 (P_{1 static}) & Density (ρ₀) and hit the calculate button.

FAQs on Airspeed Measurement by Pitot Tube

What is the formula to find Airspeed Measurement by Pitot Tube?

The formula of Airspeed Measurement by Pitot Tube is expressed as Velocity at Point 1 = sqrt((2*(Total Pressure-Static Pressure at Point 1))/(Density)). Here is an example- 0.316703 = sqrt((2*(61710-61660))/(997)).

How to calculate Airspeed Measurement by Pitot Tube?

With Total Pressure (P₀), Static Pressure at Point 1 (P_{1 static}) & Density (ρ₀) we can find Airspeed Measurement by Pitot Tube using the formula - Velocity at Point 1 = sqrt((2*(Total Pressure-Static Pressure at Point 1))/(Density)). This formula also uses Square Root (sqrt) function(s).

What are the other ways to Calculate Velocity at Point 1?

Here are the different ways to Calculate Velocity at Point 1-

Velocity at Point 1=sqrt((2*(Pressure at Point 1-Pressure at Point 2))/(Density*(Contraction Ratio^2-1)))

Can the Airspeed Measurement by Pitot Tube be negative?

Yes, the Airspeed Measurement by Pitot Tube, measured in Speed can be negative.

Which unit is used to measure Airspeed Measurement by Pitot Tube?

Airspeed Measurement by Pitot Tube is usually measured using the Meter per Second[m/s] for Speed. Meter per Minute[m/s], Meter per Hour[m/s], Kilometer per Hour[m/s] are the few other units in which Airspeed Measurement by Pitot Tube can be measured.

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