-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Ron Jensen wrote: > On Fri, 2007-07-06 at 02:00 +0200, gh.robin wrote: > >> Thanks John, >> >> Yes the patch has vanished , probably in the vacuum space :) >> >> Because your patch is only a simple extension of the existing table it >> could >> be commit without any risk. >> >> Regards > > Hi, > > I freshened this patch to extend the altimeter from 62,000 ft to 100,000 > ft. gh.robin and I have both reviewed it and recommend it be committed. > > Thanks, > > Ron >
Committed; thanks Tim > > ------------------------------------------------------------------------ > > Index: src/Environment/environment.cxx > =================================================================== > RCS file: /var/cvs/FlightGear-0.9/source/src/Environment/environment.cxx,v > retrieving revision 1.19 > diff -u -r1.19 environment.cxx > --- src/Environment/environment.cxx 29 Jul 2006 09:22:24 -0000 1.19 > +++ src/Environment/environment.cxx 31 Aug 2007 14:47:05 -0000 > @@ -49,43 +49,50 @@ > // Atmosphere model. > //////////////////////////////////////////////////////////////////////// > > -// Copied from YASim Atmosphere.cxx, with m converted to ft, degK > -// converted to degC, Pa converted to inHG, and kg/m^3 converted to > -// slug/ft^3; they were then converted to deltas from the sea-level > -// defaults (approx. 15degC, 29.92inHG, and 0.00237slugs/ft^3). > - > -// Original comment from YASim: > - > -// Copied from McCormick, who got it from "The ARDC Model Atmosphere" > -// Note that there's an error in the text in the first entry, > -// McCormick lists 299.16/101325/1.22500, but those don't agree with > -// R=287. I chose to correct the temperature to 288.20, since 79F is > -// pretty hot for a "standard" atmosphere. > +// Calculated based on the ISA standard day, as found at e.g. > +// http://www.av8n.com/physics/altimetry.htm > > -// Elevation (ft), temperature factor (degK), pressure factor (inHG) > +// Each line of data has 3 elements: > +// Elevation (ft), > +// temperature factor (dimensionless ratio of absolute temp), > +// pressure factor (dimensionless ratio) > static double atmosphere_data[][3] = { > - { 0.00, 1.00, 1.000 }, > - { 2952.76, 0.98, 0.898 }, > - { 5905.51, 0.96, 0.804 }, > - { 8858.27, 0.94, 0.719 }, > - { 11811.02, 0.92, 0.641 }, > - { 14763.78, 0.90, 0.570 }, > - { 17716.54, 0.88, 0.506 }, > - { 20669.29, 0.86, 0.447 }, > - { 23622.05, 0.84, 0.394 }, > - { 26574.80, 0.82, 0.347 }, > - { 29527.56, 0.80, 0.304 }, > - { 32480.31, 0.78, 0.266 }, > - { 35433.07, 0.76, 0.231 }, > - { 38385.83, 0.75, 0.201 }, > - { 41338.58, 0.75, 0.174 }, > - { 44291.34, 0.75, 0.151 }, > - { 47244.09, 0.75, 0.131 }, > - { 50196.85, 0.75, 0.114 }, > - { 53149.61, 0.75, 0.099 }, > - { 56102.36, 0.75, 0.086 }, > - { 59055.12, 0.75, 0.075 }, > - { 62007.87, 0.75, 0.065 }, > + { -3000.00, 1.021, 1.1133 }, > + { 0.00, 1.000, 1.0000 }, > + { 2952.76, 0.980, 0.8978 }, > + { 5905.51, 0.959, 0.8042 }, > + { 8858.27, 0.939, 0.7187 }, > + { 11811.02, 0.919, 0.6407 }, > + { 14763.78, 0.898, 0.5697 }, > + { 17716.54, 0.878, 0.5052 }, > + { 20669.29, 0.858, 0.4468 }, > + { 23622.05, 0.838, 0.3940 }, > + { 26574.80, 0.817, 0.3463 }, > + { 29527.56, 0.797, 0.3034 }, > + { 32480.31, 0.777, 0.2649 }, > + { 35433.07, 0.756, 0.2305 }, > + { 38385.83, 0.752, 0.2000 }, > + { 41338.58, 0.752, 0.1736 }, > + { 44291.34, 0.752, 0.1506 }, > + { 47244.09, 0.752, 0.1307 }, > + { 50196.85, 0.752, 0.1134 }, > + { 53149.61, 0.752, 0.0984 }, > + { 56102.36, 0.752, 0.0854 }, > + { 59055.12, 0.752, 0.0741 }, > + { 62007.87, 0.752, 0.0643 }, > + { 65000.00, 0.752, 0.0557 }, > + { 68000.00, 0.754, 0.0482 }, > + { 71000.00, 0.758, 0.0418 }, > + { 74000.00, 0.761, 0.0362 }, > + { 77000.00, 0.764, 0.0314 }, > + { 80000.00, 0.767, 0.0273 }, > + { 83000.00, 0.770, 0.0237 }, > + { 86000.00, 0.773, 0.0206 }, > + { 89000.00, 0.777, 0.0179 }, > + { 92000.00, 0.780, 0.0156 }, > + { 95000.00, 0.783, 0.0135 }, > + { 98000.00, 0.786, 0.0118 }, > + { 101000.00, 0.789, 0.0103 }, > { -1, -1, -1 } > }; > > > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Splunk Inc. > Still grepping through log files to find problems? Stop. > Now Search log events and configuration files using AJAX and a browser. > Download your FREE copy of Splunk now >> http://get.splunk.com/ > > > ------------------------------------------------------------------------ > > _______________________________________________ > Flightgear-devel mailing list > Flightgear-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/flightgear-devel -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org iD8DBQFG2FemeDhWHdXrDRURAvhTAJwIo9TnG83JaPuyVYB+FLYuJbCYOgCguMbu K3yXvGVFNwng/B3On/g7Lu8= =wKC0 -----END PGP SIGNATURE----- ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
