Andrew Gideon wrote:
journeyman wrote:

At least, that's my assumption. I've no idea whether or not it's correct.

Not. The "bubble" is the same size (5 miles for ARTCC?).

Interesting, and somewhat surprising to me. If you view separation as a
function of time (ie. targets are separated based upon how much time it
would take for them to reach one another), this model appears to offer the
fast-movers less of a cushion.

No, it's not an issue of time to act so much as it is the certainty of the location of
the aircraft. It's the controller's job to take into account the relative speeds of the
aircraft and to act so that the 5 mile bubbles don't burst. He has to look further
ahead of faster movers.