Bruster
04-28-2007, 07:50 AM
....comparing GPS Radar and a Gaffrig Pitot Speedo. In a few words all 3 read within about 1-1/2% (worse case) with the pitot speedo reading the slowest. The faster the speeds the closer all three readings were, within .03% @ 100 MPH.
There was also a chart to convert air pressure to speed to check the accuracy of your pito speedo, providing you have a calibrated air pressure gage.
There was also a chart to convert air pressure to speed to check the accuracy of your pito speedo, providing you have a calibrated air pressure gage.