[EMAIL PROTECTED] writes: > Why don't we use SI Units in flightgear? > > Why unknown feets when meter is the international standard in this > world?
Ah, this is a long-standing thread. Personally, I'd love to use SI internally, but for the user interface, we still need to use Imperial, because that's what most of the aviation world uses. As far as I know, even countries that use SI for some things (such as runway length or altimeter setting) still use a lot of Imperial for flying, including altitude and airspeed. One exception is temperature -- nearly everyone is using degC now for aviation weather. By the way, I live in Canada, which is also a Metric country, so I have to convert constantly between the liters I buy fuel in and the U.S. gallons in my aircraft's published performance data. Even though Canada switched to SI in the 1970's, however, we still give runway length and altitude in feet, visibility in statute miles, and distance in nautical miles. We give the altimeter setting primarily in inHg, but the METAR includes the hPa setting in comments. All the best, David _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
