Travis Hunter
e6bf1fea9b
This reverts commit 6280d9fb0184275843a8f4406c7293e41e65a639, reversing changes made to 3c9c8b8c6a2b2e7430ff09efdc2cc0c1996b16ca.
33 lines
1.0 KiB
C++
33 lines
1.0 KiB
C++
#ifndef UTILS_MATH_CONSTANTS_H
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#define UTILS_MATH_CONSTANTS_H
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namespace utils::math
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{
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namespace Constants
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{
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constexpr double Rstar = 8.31432;
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constexpr const double g0 = 9.80665;
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constexpr const double airMolarMass = 0.0289644;
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// gamma is the ratio of the specific heat of air at constant pressure to that at
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// constant volume. Used in computing the speed of sound
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constexpr const double gamma = 1.4;
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// beta is used in calculating the dynamic viscosity of air. Based on the 1976 US Standard
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// Atmosphere report, it is empirically measured to be:
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constexpr const double beta = 1.458e-6;
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// Sutherland's constant
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constexpr const double S = 110.4;
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constexpr const double standardTemperature = 288.15;
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constexpr const double standardDensity = 1.2250;
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constexpr const double meanEarthRadiusWGS84 = 6371008.8;
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constexpr const long double earthGM = 398600441800000.0;
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constexpr const double earthGM_km = 398600.4418;
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};
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} // namespace utils::math
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#endif // UTILS_MATH_CONSTANTS_H
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