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AP_Math: add macro for m/s to knots convertion

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Francisco Ferreira 2019-03-21 23:38:38 +00:00 committed by Andrew Tridgell
parent 32a6f0026a
commit 6e95a144ef
1 changed files with 2 additions and 0 deletions
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2
libraries/AP_Math/definitions.h
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@ -73,6 +73,8 @@ static const double WGS84_E = (sqrt(2 * WGS84_F - WGS84_F * WGS84_F));
#define C_TO_KELVIN 273.15f
#define M_PER_SEC_TO_KNOTS 1.94384449f
// 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