Jim Wilson wrote: > On the other hand it could be lift. A possible clue: when I'm having > trouble the "mach" reading seems to be way too high as compared to the > KAIS reading just above. Examples: > > @ 19000ft 419KIAS MACH=0.91 > @ 23000ft 344KIAS MACH=0.83
Those numbers look correct to me. As altitude increases, the speed of sound is decreasing due to the drop in temperature and the absolute speed corresponding to "indicated" airspeed is increasing due to the drop in density. At sea level, mach one is about 700 KIAS. At the tropopause, it's only something like 370. Andy -- Andrew J. Ross NextBus Information Systems Senior Software Engineer Emeryville, CA [EMAIL PROTECTED] http://www.nextbus.com "Men go crazy in conflagrations. They only get better one by one." - Sting (misquoted) _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
