Date: 12 Oct 98 00:02:16 From: Alan Browne <abrowne@SPAMX.sympatico.ca> Organization: Bell Solutions References: 1 2 3 Followups: 1
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Phil Dunn wrote: > Do you think this could be condensation instead of shock wave? > > I have flown lots of supersonic formation and you don't see shock waves. > You can feel them though. > > But as the pressure gets very low, you can see transient condensation of > water and this appears like shock wave. I agree: I have often seen condensation form in sheets over a wing, and occasionally in sharply defined patterns that could be interpreted as a shock wave. Since the density of water vapour can vary greatly as the wing flies through it, these patterns tend to pop into view, disappear and pop back. Alan.