Rick,

 

It sounds to me as though you have position error, caused by the position of your static source.  It is present on all aircraft, but is usually kept minimal.  Being experimental, we have more variation than normal.  If so, you have two possible solutions.  You can measure the error, which should be repeatable, and apply it as a correction factor.  Or you can try moving your static source to see if you can find a better compromise.  A small change can make a difference.

 

Have you checked with other ES builders to see if they have the same static source position, and if they have similar errors?  Of course they may not know (or want to know if they are showing exceptional performance!). 

 

Jerry

 

On 4/3/07, Rick Argente <ricargente@cs.com> wrote:

Scott/Rob/Marv,

 

Thanks for the responses/suggestions so far!

 

It appears that we should inspect/investigate the static side of the airspeed equation.  Maybe water or small bugs or dirt in the static system?  Definitely worth checking very closely...

 

While we were flying in close formation, at the same altitude, if never occurred to us to verify altitude readings.  If there were any significant differences, this would have indicated some sort of problem with the static port...  

 

I guess we have our worked cut out for us!

 

Thanks again,

Rick