Thanks. I have found various CG calculators including one for canards. Someone may have pointed me to that in this thread.

I am back at work on RC Calculators and working on more calculators. I learned the Google AdMob interface so I could put out the Free Edition.

I'm also working on iPhone/iPad and Windows Phone versions. I will do a Windows 8 version as well as a web based solution. This is a long term project for me. I will continue to advance the paid editions and the web based one.

If you have an Android device, please install the Free Edition and give me some feedback.