jtt, thank you for a very interesting reply and for helping me straight on that.
I'm not sure I understand your last about the speed not depending on the medium, or the source. If you could elaborate a little on that please? In the case of pings, say nose to tail, if the temp and density of the medium, air, is known, would comparing the time difference between the expected static speed of sound in air at that density vs the measured speed of the ping give us the speed of the medium? Which is the airspeed?
Thanks for your input
