From d568767164c24ec4c461806ae779567769c04e7f Mon Sep 17 00:00:00 2001 From: Michael du Breuil Date: Wed, 11 Jul 2018 19:04:11 -0700 Subject: [PATCH] AP_Math: Add conversion between inches of water to pascals --- libraries/AP_Math/definitions.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libraries/AP_Math/definitions.h b/libraries/AP_Math/definitions.h index 242fe8066f..c20f45f697 100644 --- a/libraries/AP_Math/definitions.h +++ b/libraries/AP_Math/definitions.h @@ -83,6 +83,8 @@ static const double WGS84_E = (sqrt(2 * WGS84_F - WGS84_F * WGS84_F)); #define SSL_AIR_PRESSURE 101325.01576f // Pascal #define SSL_AIR_TEMPERATURE 288.15f // K +#define INCH_OF_H2O_TO_PASCAL 248.84f + /* use AP_ prefix to prevent conflict with OS headers, such as NuttX clock.h