Hi

 

I have noticed when flying default or 3rd party ( A2A C172 or Realair ) aircraft with normal 'round' instruments the Airspeed Indicator needle pulses about once every second.  With AS2012 NOT supplying weather the ASI needle is stable, so I have posted a query on both the official HiFi and the un-official Avsim forums but have had no reply after 5 days on either, so possibly its not a AS2012 problem ??

 

Does anyone else have this problem and have they found a fix ?

 

Thanks, Glen

The behavior you're describing happens in a climb or descent because the changing outside air temp (a dependent variable in the TAS-to-IAS conversion) is only updated once per second in the FSX sim engine.  I collaborated with Pete Dowson some years back to provide a smoothing feature to the airspeed as reported in the FSUIPC offset for airspeed,...Pete programmed FSUIPC v3 (for FS9) with an option to provide a moving average of the speed, which effectively smooths out those annoying ticks in the airspeed.  AFAIK, he did not include that feature in FSUIPC V4 for FSX.

 

In my programming for the Tinmouse II B737, I implemented airspeed smoothing directly in the gauge.  It would appear that other gauge programmers have tackled the issue, and some others have not...PMDG's acft, though very high quality, still all have that aggravating tick in FSX, for example.

 

So we're kind of stuck with it unless you can program your own airspeed gauge or talk the developer into dealing with it.

 

Regards

Interesting answer, many thanks for your help.

I had this problem when using Active Sky weather.  As best as I can remember, it occurred when I climbed to the level of the cloud layer.  My solution was to deactivate FSUIPC, which is accomplished by moving the .dll file out of the FSX modules folder.  You can try this and put the .dll file back in the folder to re-activate FSUIPC, or as you wish.