Mirror/ardupilot
5
0
Fork 0
mirror of https://github.com/ArduPilot/ardupilot synced 2025-01-03 06:28:27 -04:00
Code Issues Packages Projects Releases Wiki Activity

AP_Baro: moved constants to AP_Math/definitions.h

Browse Source
This commit is contained in:
Andrew Tridgell 2017-11-03 20:11:12 +11:00
parent ee1fea55ce
commit 5846558b0e
1 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
libraries/AP_Baro/AP_Baro.cpp
View File

@ -45,11 +45,6 @@
#include "AP_Baro_UAVCAN.h"
#endif
#define C_TO_KELVIN 273.15f
// Gas Constant is from Aerodynamics for Engineering Students, Third Edition, E.L.Houghton and N.B.Carruthers
#define ISA_GAS_CONSTANT 287.26f
#define ISA_LAPSE_RATE 0.0065f
#define INTERNAL_TEMPERATURE_CLAMP 35.0f
@ -288,7 +283,7 @@ float AP_Baro::get_EAS2TAS(void)
// provides a more consistent reading then trying to estimate a complete
// ISA model atmosphere
float tempK = get_ground_temperature() + C_TO_KELVIN - ISA_LAPSE_RATE * altitude;
_EAS2TAS = safe_sqrt(1.225f / ((float)get_pressure() / (ISA_GAS_CONSTANT * tempK)));
_EAS2TAS = safe_sqrt(AIR_DENSITY_SEA_LEVEL / ((float)get_pressure() / (ISA_GAS_CONSTANT * tempK)));
_last_altitude_EAS2TAS = altitude;
return _EAS2TAS;
}