"Jack Harrison" wrote in message


"Michael Mcneil" wrote in message
news:9009dc8b5fe10d00759c8646af9396ec.45219@mygate .mailgate.org...

Does anyone on here know the diameter of condensation trails of
aircraft?

I could never of course see my own contrails. But I did see plenty of
contrails made by other aircraft.

The trail is initially produced some distance (circa a few tens to a hundred
metres) behind the engines. All aircraft produces vortices from the
wing tips. These affect the contrail and result in the swirling pattern
that can often be seen when close.

I was wandering if there is a rule of thumb for the size of the initial
vortice. It is quite obvious that they are the product of the wing as
two are evolved no matter how many engines there are.

I was thinking they might be related in size to the speed and weight of
the craft that produce them. Might give some idea of the power in more
naturally produced votices. I don't suppose there is a way of gauging
them though.


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