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True vs Indicated Airspeeds

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kuffel(at)cyberport.net
Guest

Posted: Tue Mar 25, 2008 9:17 am Post subject: True vs Indicated Airspeeds

It was noted:



<< airspeed indicators being off much of the time, but this is 

easy to fix.   Go up on a Calm day, and mount a handheld GPS >>



Even better, I have an Excel spreadsheet where you enter 4 GPS 

ground tracks and speeds.  Output is 4 true airspeeds and wind. 

Only 3 inputs are required.  But if you fly an approximate square 

pattern instead then you get redundant data which gives you an 

estimate of accuracy.



Besides graphs of true vs indicated airspeeds at various 

altitudes, this method can show your *real* stall speeds.



Email me direct for a copy.



Tom Kuffel

Whitefish, MT

Building Original FireStar

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