The Impossibility of Flying Heavy Aircraft Without Training

On Sat, 4 Mar 2006 at 05:38:33 in message
.com,
wrote:

A more efficient wing will produce less downwash than a less efficient
one, for the same lift.

Yes but it still has to provide the exact same amount of rate of change
of momentum. It tends to move a bigger mass of air slower but at the
same momentum change.
--
David CL Francis

David CL Francis wrote:
On Sat, 4 Mar 2006 at 05:38:33 in message
.com,
wrote:

A more efficient wing will produce less downwash than a less efficient
one, for the same lift.

Yes but it still has to provide the exact same amount of rate of change
of momentum. It tends to move a bigger mass of air slower but at the
same momentum change.

An infinite wing has no induced downwash.

How is it supported?

--

FF

An infinite wing has no induced downwash.

How is it supported?

It has downwash. There is upflow in front of the wing, and downwash
behind the wing. There is more downwash than upflow, this counteracts
mg of the wing.

There is no vortex at the wingtips (no wingtips) but there is a vortex
in the direction of flight.

Jose
--
Money: what you need when you run out of brains.
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