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Conflicting Air Speed Indicator, (ASI), readings..

PostPosted: Tue May 20, 2003 12:51 pm
by Fozzer
Have you noticed that when observing your air speed indicator in the cockpit view, then swopping over to the default, 6 instrument view, (with the "W" key), for a better view of the runway ahead, that the two readings are different, sometimes as much as 20-40 knots difference....?
(The cockpit view readings are generally the higher of the two).

This raises problems in trying to calculate the real stall speed when flaring out for a landing... :o....!!

(Note: when flying prop planes with conventional  analogue instruments).

...any comments...?

(Note that both sets of instruments are reading true air speed in knots)...?

Cheers all...
Paul.
(England).

Re: Conflicting Air Speed Indicator, (ASI), readin

PostPosted: Tue May 20, 2003 2:39 pm
by Hagar
Fozzer. Which panels have you tried this with? If they're 3rd party panels I suspect the ASI gauge itself is a tad innacurate. The default gauges on the mini panel (& default panels) should be correct.

Re: Conflicting Air Speed Indicator, (ASI), readin

PostPosted: Tue May 20, 2003 3:09 pm
by Fozzer
Fozzer. Which panels have you tried this with? If they're 3rd party panels I suspect the ASI gauge itself is a tad innacurate. The default gauges on the mini panel (& default panels) should be correct.


Hi Hagar....
Thanks for the tip.
Actually all my planes are 3rd. party small prop planes, so that accounts for it...
I wonder why the designers don't match the 3rd. party/default instruments up together?
I wonder which I should rely on for accuracy, regarding stall speeds, my 3rd. party plane's gauge or the default 6 gauge layout..?


Cheers Doug... ;D...!
Paul.
(England).

Re: Conflicting Air Speed Indicator, (ASI), readin

PostPosted: Tue May 20, 2003 3:25 pm
by Hagar

Hi Hagar....
Thanks for the tip.
Actually all my planes are 3rd. party small prop planes, so that accounts for it...
I wonder why the designers don't match the 3rd. party/default instruments up together?
I wonder which I should rely on for accuracy, regarding stall speeds, my 3rd. party plane's gauge or the default 6 gauge layout..?


Cheers Doug... ;D...!
Paul.
(England).

Well Paul, as I mentioned the defaults should be accurate. Hit Shift + Z to compare them with the onscreen readout. I'm not sure offhand if this is IAS or TAS.  ::)