From: Eric van den Berg <evan_den_berg@hotmail.com>
Date: Sun, 17 Feb 2013 15:44:47 +0000 (+0100)
Subject: added physical constant cp
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=57b4ce96e4366483c3de4fc01987004c154dc1e8;p=simgear.git

added physical constant cp
---

diff --git a/simgear/constants.h b/simgear/constants.h
index a1bb71cf..8a939907 100644
--- a/simgear/constants.h
+++ b/simgear/constants.h
@@ -1,7 +1,7 @@
 // constants.h -- various constant definitions
 //
 // Written by Curtis Olson, started February 2000.
-// Last change by Eric van den Berg, Dec 2012
+// Last change by Eric van den Berg, Feb 2013
 //
 // Copyright (C) 2000  Curtis L. Olson - http://www.flightgear.org/~curt/
 //
@@ -122,6 +122,9 @@ const float SG_RADIANS_TO_DEGREES = 180.0f / SG_PI;
 /**specific gas constant of air*/
 #define SG_R_m2_p_s2_p_K      287.05   // m2/s2/K
 
+/**specific heat constant at constant pressure*/
+#define SG_cp_m2_p_s2_p_K 1004.68      // m2/s2/K   
+
 /**ratio of specific heats of air*/
 #define SG_gamma              1.4         // =cp/cv (cp = 1004.68 m2/s2 K , cv = 717.63 m2/s2 K)