Ampere K. Hardraade wrote:
On Wednesday 19 April 2006 01:21, John Wojnaroski wrote:
A change that large (13 knots!!) is a major wind shear.
Might it make sense to provide some sort of filtering or extrapolation
between stations to moderate such extreme changes
Regards
John W.
I also find it extremely annoying.
I had just finished installing an auto-throttle capability in the sim
and feeling pretty good about how the takeoff and climb were proceeding
when the throttles violently and suddenly rolled back and reduced power.
Guess I had noticed the a/s speed jumps in the past but this was the
first time there was a physical event associated with the weather update.
There were several such events during the cruise to Albuquerque and they
were disconcerting.
I do think the real-weather feature is an excellent addition. In fact,
an amusing antecdote --- at Scale4x we enabled the feature at the
morning start and were presented with a blank grey OTW view on the
screen. Walked outside (we were located at LAX) and sure enough the
coastal fog was laid in nice and thick and low. We had to turn the
weather off so folks could see the scenery and pick out local landmarks
and terrain features :-)
This also relates to the "why does my aircraft jerk suddenly" question that we
get occasionly. Some people like to think that it is some sort of
turbulence, but the not-very-well-thought-out weather simulation routine is
the most likely suspect.
As John said, instead of relying on just one set of data from a single
station, it might make sense to take data from all the surrounding stations
and perform some extrapolation.
Or perhaps save the current value before updating and "blend" the new
value with the previous over, say a 5 minute period.
Regards
John W.
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