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Expanded or Developed Blade Area of Propeller Calculator

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Mooring Forces Important Formulas of Mooring Forces

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Form Drag Propeller Drag Skin Friction

✖Waterline Length of a Vessel is the length of a ship or boat at the level where it sits in the water.ⓘ Waterline Length of a Vessel [l_wl]			+10% -10%
✖Vessel Beam refers to the width of a vessel, such as a ship or boat, measured at its widest point.ⓘ Vessel Beam [B]			+10% -10%
✖Area Ratio is a parameter used to describe the proportion of a specific area relative to another reference area.ⓘ Area Ratio [A_r]			+10% -10%

✖Expanded or Developed Blade Area of a Propeller refers to the surface area of the propeller blades when they are "unwrapped" and laid flat on a plane.ⓘ Expanded or Developed Blade Area of Propeller [A_p]

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Formula

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Expanded or Developed Blade Area of Propeller

Formula

A p = \frac{l wl \cdot B}{0.838} \cdot A r

Example

20.26539 m² = \frac{7.32 m \cdot 2 m}{0.838} \cdot 1.16

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Expanded or Developed Blade Area of Propeller Solution

STEP 0: Pre-Calculation Summary

Formula Used

Expanded or Developed Blade Area of a Propeller = (Waterline Length of a Vessel*Vessel Beam)/0.838*Area Ratio
A_p = (l_wl*B)/0.838*A_r
This formula uses 4 Variables

Variables Used

Expanded or Developed Blade Area of a Propeller - (Measured in Square Meter) - Expanded or Developed Blade Area of a Propeller refers to the surface area of the propeller blades when they are "unwrapped" and laid flat on a plane.
Waterline Length of a Vessel - (Measured in Meter) - Waterline Length of a Vessel is the length of a ship or boat at the level where it sits in the water.
Vessel Beam - (Measured in Meter) - Vessel Beam refers to the width of a vessel, such as a ship or boat, measured at its widest point.
Area Ratio - Area Ratio is a parameter used to describe the proportion of a specific area relative to another reference area.

STEP 1: Convert Input(s) to Base Unit

Waterline Length of a Vessel: 7.32 Meter --> 7.32 Meter No Conversion Required
Vessel Beam: 2 Meter --> 2 Meter No Conversion Required
Area Ratio: 1.16 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

A_p = (l_wl*B)/0.838*A_r --> (7.32*2)/0.838*1.16

Evaluating ... ...

A_p = 20.2653937947494

STEP 3: Convert Result to Output's Unit

20.2653937947494 Square Meter --> No Conversion Required

FINAL ANSWER

20.2653937947494 ≈ 20.26539 Square Meter <-- Expanded or Developed Blade Area of a Propeller

(Calculation completed in 00.004 seconds)

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< Mooring Forces Calculators

Coefficient of Drag for Winds Measured at 10 m given Drag Force due to Wind

Go Coefficient of Drag = Drag Force/(0.5*Air Density*Projected Area of the Vessel*Wind Speed at Height of 10 m^2)

Projected Area of Vessel above Waterline given Drag Force due to Wind

Go Projected Area of the Vessel = Drag Force/(0.5*Air Density*Coefficient of Drag*Wind Speed at Height of 10 m^2)

Mass Density of Air given Drag Force due to Wind

Go Air Density = Drag Force/(0.5*Coefficient of Drag*Projected Area of the Vessel*Wind Speed at Height of 10 m^2)

Drag Force due to Wind

Go Drag Force = 0.5*Air Density*Coefficient of Drag*Projected Area of the Vessel*Wind Speed at Height of 10 m^2

< Important Formulas of Mooring Forces Calculators

Undamped Natural Period of Vessel

Go Undamped Natural Period of a Vessel = 2*pi*(sqrt(Virtual Mass of the Ship/Effective Spring Constant))

Individual Stiffness of Mooring Line

Go Individual Mooring Line Stiffness = Axial Tension or Load on a Mooring Line/Elongation in the Mooring Line

Mass of Vessel given Virtual Mass of Vessel

Go Mass of a Vessel = Virtual Mass of the Ship-Mass of Vessel due to Inertial Effects

Virtual Mass of Vessel

Go Virtual Mass of the Ship = Mass of a Vessel+Mass of Vessel due to Inertial Effects

Expanded or Developed Blade Area of Propeller Formula

Expanded or Developed Blade Area of a Propeller = (Waterline Length of a Vessel*Vessel Beam)/0.838*Area Ratio
A_p = (l_wl*B)/0.838*A_r

What causes Skin Friction?

Skin friction drag is caused by the viscosity of fluids and is developed from laminar drag to turbulent drag as a fluid moves on the surface of an object. Skin friction drag is generally expressed in terms of the Reynolds number, which is the ratio between inertial force and viscous force.

How to Calculate Expanded or Developed Blade Area of Propeller?

Expanded or Developed Blade Area of Propeller calculator uses Expanded or Developed Blade Area of a Propeller = (Waterline Length of a Vessel*Vessel Beam)/0.838*Area Ratio to calculate the Expanded or Developed Blade Area of a Propeller, The Expanded or Developed Blade Area of Propeller formula is defined as the parameter influencing the propeller drag that is due to the form drag of the propeller with a locked shaft. Expanded or Developed Blade Area of a Propeller is denoted by A_p symbol.

How to calculate Expanded or Developed Blade Area of Propeller using this online calculator? To use this online calculator for Expanded or Developed Blade Area of Propeller, enter Waterline Length of a Vessel (l_wl), Vessel Beam (B) & Area Ratio (A_r) and hit the calculate button. Here is how the Expanded or Developed Blade Area of Propeller calculation can be explained with given input values -> 20.26539 = (7.32*2)/0.838*1.16.

FAQ

What is Expanded or Developed Blade Area of Propeller?

The Expanded or Developed Blade Area of Propeller formula is defined as the parameter influencing the propeller drag that is due to the form drag of the propeller with a locked shaft and is represented as A_p = (l_wl*B)/0.838*A_r or Expanded or Developed Blade Area of a Propeller = (Waterline Length of a Vessel*Vessel Beam)/0.838*Area Ratio. Waterline Length of a Vessel is the length of a ship or boat at the level where it sits in the water, Vessel Beam refers to the width of a vessel, such as a ship or boat, measured at its widest point & Area Ratio is a parameter used to describe the proportion of a specific area relative to another reference area.

How to calculate Expanded or Developed Blade Area of Propeller?

The Expanded or Developed Blade Area of Propeller formula is defined as the parameter influencing the propeller drag that is due to the form drag of the propeller with a locked shaft is calculated using Expanded or Developed Blade Area of a Propeller = (Waterline Length of a Vessel*Vessel Beam)/0.838*Area Ratio. To calculate Expanded or Developed Blade Area of Propeller, you need Waterline Length of a Vessel (l_wl), Vessel Beam (B) & Area Ratio (A_r). With our tool, you need to enter the respective value for Waterline Length of a Vessel, Vessel Beam & Area Ratio and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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