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Simplify SystemBody::GetAtmPressure #5662

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Nov 13, 2023
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Simplify SystemBody::GetAtmPressure #5662

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5 changes: 3 additions & 2 deletions src/galaxy/SystemBody.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -197,11 +197,12 @@ double SystemBody::GetAtmPressure(double altitude) const
{
const double gasMolarMass = GetMolarMass(GetSuperType());
const double surfaceGravity_g = CalcSurfaceGravity();
const double lapseRate_L = surfaceGravity_g / GetSpecificHeat(GetSuperType()); // deg/m
const double specificHeat = GetSpecificHeat(GetSuperType());
const double lapseRate_L = surfaceGravity_g / specificHeat; // deg/m
const double surfaceTemperature_T0 = GetAverageTemp(); //K

return m_atmosPressure * pow((1 - lapseRate_L * altitude / surfaceTemperature_T0),
(surfaceGravity_g * gasMolarMass / (GAS_CONSTANT_R * lapseRate_L))); // in ATM since p0 was in ATM
(specificHeat * gasMolarMass / GAS_CONSTANT_R)); // in ATM since p0 was in ATM
}

double SystemBody::GetAtmDensity(double altitude, double pressure) const
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