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Geometric altitude Formula

GoGeometric altitude for given geopotential altitude Formula

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Geometric altitude is the altitude as measured from the mean sea level. Check FAQs

h G = h a - [Earth-R]

h_G - Geometric Altitude?h_a - Absolute Altitude?[Earth-R] - Earth mean radius?

Geometric altitude Example

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With units

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Here is how the Geometric altitude equation looks like with Values.

Here is how the Geometric altitude equation looks like with Units.

Here is how the Geometric altitude equation looks like.

28991.2 = 6.4E+6 - 6371.0088

28991.2m = 6.4E+6m - 6371.0088km

28991.2 = 6.4E+6 - 6371.0088

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Geometric altitude Solution

Follow our step by step solution on how to calculate Geometric altitude?

FIRST Step Consider the formula

h G = h a - [Earth-R]

Next Step Substitute values of Variables

∴

h G = 6.4E+6m - [Earth-R]

Next Step Substitute values of Constants

∴

h G = 6.4E+6m - 6371.0088km

Next Step Prepare to Evaluate

∴

h G = 6.4E+6 - 6371.0088

Next Step Evaluate

∴

h G = 28991.2000000002m

LAST Step Rounding Answer

∴

h G = 28991.2m

Geometric altitude Formula Elements

Variables

Constants

Geometric Altitude

Geometric altitude is the altitude as measured from the mean sea level.

Symbol: h_G

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Geometric Altitude

Absolute Altitude

Absolute Altitude is the altitude as measured from the center of the earth.

Symbol: h_a

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Absolute Altitude

Earth mean radius

Earth mean radius represents the average distance from the Earth's center to any point on its surface, providing a single value to characterize the size of the Earth.

Symbol: [Earth-R]

Value: 6371.0088 km

Other Formulas to find Geometric Altitude

Go Geometric altitude for given geopotential altitude

h G = [Earth-R] \cdot \frac{h}{[Earth-R] - h}

Other formulas in Atmosphere and Gas Properties category

Go Absolute altitude

h a = h G + [Earth-R]

Go Geopotential altitude

h = [Earth-R] \cdot \frac{h G}{[Earth-R] + h G}

Go Lapse rate

λ = \frac{∆T}{Δh}

Go Equivalent Airspeed given Static Pressure

EAS = a o \cdot M \cdot {(P static \cdot \frac{6894.7573}{P o})}^{0.5}

How to Evaluate Geometric altitude?

Geometric altitude evaluator uses Geometric Altitude = Absolute Altitude-[Earth-R] to evaluate the Geometric Altitude, Geometric Altitude is a measure of the height of an object or point above the Earth's equatorial radius, calculated by subtracting the Earth's radius from the absolute altitude. Geometric Altitude is denoted by h_G symbol.

How to evaluate Geometric altitude using this online evaluator? To use this online evaluator for Geometric altitude, enter Absolute Altitude (h_a) and hit the calculate button.

FAQs on Geometric altitude

What is the formula to find Geometric altitude?

The formula of Geometric altitude is expressed as Geometric Altitude = Absolute Altitude-[Earth-R]. Here is an example- 28991.2 = 6400000-[Earth-R].

How to calculate Geometric altitude?

With Absolute Altitude (h_a) we can find Geometric altitude using the formula - Geometric Altitude = Absolute Altitude-[Earth-R]. This formula also uses Earth mean radius constant(s).

What are the other ways to Calculate Geometric Altitude?

Here are the different ways to Calculate Geometric Altitude-

Geometric Altitude=[Earth-R]*Geopotential altitude/([Earth-R]-Geopotential altitude)

Can the Geometric altitude be negative?

No, the Geometric altitude, measured in Length cannot be negative.

Which unit is used to measure Geometric altitude?

Geometric altitude is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Geometric altitude can be measured.

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