I tend to agree with the above comments about the GPS only being relied upon for position, and velocity as a maybe. I tested the accuracy of it while driving around on the street, and came to the conclusion that its not a realistic comparison... There's far less abrupt movement, the antennae is always in the same orientation, the velocities are lower, and the system tends to operate on the same plane at all times. The readings and 3D plots looked far different than that of the aircraft tests...

I run the Eagle tree unit with both GPS and Airspeed, where I've seen some readings appear to be realistic while others are totally out to lunch. The only way to verify speed through a GPS reading is with direct comparison to airspeed, keeping in mind they are not exactly the same measurement and noting the wind conditions while the readings were taken...

I hope someone here gives some accurate speed data on the new KingCat with a Titan, since I've been contracted to build one for a new jet guy up here... I'd like to know what Its capable of before I go to maiden it in the spring time!

Kelly