"Sam Spade" wrote in message
...


I don't see any need for air data to make this work. It is a positive
course guidance oval, right? So, make the oval the correct dimensions for
containment in protected airspace. Then, the autopilot, flight director,
or hand-flying pilot will compensate for wind by simply remaining on the
yellow brick road.

My autopilot, S-Tec 55, won't do more than a 90% standard rate turn, and
that is only in the high-gain capture mode. If you make the predefined oval
large enough so that such a turn will get you rolled out on the inbound
course in the presence of a stiff xwind from either side, I suppose you can
make it work. For published holds, the containment airspace is already
defined, and may be constrained in some areas due to adjacent airspace and
ATC considerations.