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AP_AHRS: added get_air_density_ratio()

This commit is contained in:
Andrew Tridgell 2024-05-04 13:44:15 +10:00 committed by Peter Barker
parent 6e4de623df
commit 5a439bb9b7
3 changed files with 11 additions and 1 deletions
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7
libraries/AP_AHRS/AP_AHRS.cpp
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@ -3570,6 +3570,13 @@ float AP_AHRS::get_EAS2TAS(void) const
return 1.0;
}
// get air density / sea level density - decreases as altitude climbs
float AP_AHRS::get_air_density_ratio(void) const
{
const float eas2tas = get_EAS2TAS();
return 1.0 / sq(eas2tas);
}
// singleton instance
AP_AHRS *AP_AHRS::_singleton;

3
libraries/AP_AHRS/AP_AHRS.h
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@ -143,6 +143,9 @@ public:
// get apparent to true airspeed ratio
float get_EAS2TAS(void) const;
// get air density / sea level density - decreases as altitude climbs
float get_air_density_ratio(void) const;
// return an airspeed estimate if available. return true
// if we have an estimate
bool airspeed_estimate(float &airspeed_ret) const;

2
libraries/AP_AHRS/AP_AHRS_Backend.cpp
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@ -265,7 +265,7 @@ void AP_AHRS::Log_Write_Home_And_Origin()
// get apparent to true airspeed ratio
float AP_AHRS_Backend::get_EAS2TAS(void) {
return AP::baro().get_EAS2TAS();
return AP::baro()._get_EAS2TAS();
}
// return current vibration vector for primary IMU