Am Sonntag 26 Juni 2005 17:17 schrieb Roy Vegard Ovesen: > On Sunday 26 June 2005 14:57, Bernhard Auzinger wrote: > > I reach about 740 knots at 40000 feet. > > Apparently there is a big difference between indicated airspeed and actual > distance travelled per time unit, at 40 000 feet. If you look at the GPS > instrument in the property browser, you wil see that it indicates about > 1150 knots when you fly at mach 2 at 40 000 feet.
Now, I think I got it right. The airspeed shown on the hud is not the true airspeed. It's the indicated airspeed. At high altitudes the IAS is much lower because of the lower air pressure etc. But aerodynamically 400 knots IAS at sea level and 400 knots IAS at 40000 ft behave identical. I think I need more basics :) Regards Bernhard _______________________________________________ Flightgear-users mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-users 2f585eeea02e2c79d7b1d8c4963bae2d
