33 lines
1.1 KiB
C++
33 lines
1.1 KiB
C++
#ifndef _ATMOSPHERE_HPP
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#define _ATMOSPHERE_HPP
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namespace yasim {
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class Atmosphere {
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public:
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static float getStdTemperature(float alt);
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static float getStdPressure(float alt);
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static float getStdDensity(float alt);
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static float calcVCAS(float spd, float pressure, float temp);
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static float calcVEAS(float spd, float pressure, float temp, float density);
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static float calcMach(float spd, float temp);
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static float calcStdDensity(float pressure, float temp);
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static float spdFromMach(float mach, float temp);
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static float spdFromVCAS(float vcas, float pressure, float temp);
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// Given ambient ("0") pressure/density/temperature values,
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// calculate the properties of static air (air accelerated to the
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// aircraft's speed) at a given velocity. Includes
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// compressibility, but not shock effects.
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static void calcStaticAir(float p0, float t0, float d0, float v,
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float* pOut, float* tOut, float* dOut);
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private:
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static float getRecord(float alt, int idx);
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static float data[][4];
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};
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}; // namespace yasim
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#endif // _ATMOSPHERE_HPP
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