.
look at a wind tunnel
I actually use a picture like this as an avatar in another forum.
Vapor cones (or trails) occur at various speeds below (or above) the speed of sound and formation depends on relative humidity, atmospheric pressure, and aircraft size, speed, and attitude.
[#ditto] Yep that sounds about right. In my training to become an aircraft mechanic I had about 2 months of aerodynamics, and thats pretty much what they told us.
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I agree[:D]
Richard
Foster and Monrad have it right.
Relative humidity and flow pressures (read up on Bernoulli) cause the “fogging” you see at the leading edge of a wing, or you can also see the same sort of things on wingtip vortices.
I’ve also seen these vortices produced by the rear wings of Formula One cars during races held in countries with high humidity (Malaysia is one that springs to mind).
But is really is a cool picture…
[#ditto][#ditto][#ditto]seen a jaguar at biggen hill two year ago , came in at 600+ mph, vapour trails round the inlets
Here is an example of why I think it is a metaphore.
A P-3 Orion breaking the sound barrier!!!
Randie [C):-)]
You better watch out Randie, that pic was of our newest, most classified turbo prop to date. Expect a visit from Uncle Sam later to discuss your security clearance. lol
Completely correct. We actually discussed this in my university physics class. It’s all about airflow, and how it acts. Differing contours moving through the air tend to create all sorts of foces as they move along. It’s a similar phenomenon to vapour being seen from a jet as it banks to make a turn.