Hi Jean, great to hear from you, Bois de la Pierre was such a marvelous time....
When I started programming JAVA about twenty five years ago I used just the virtual machine and did all the configuration stuff on the command line, using batch files mostly, so, yes, I know that you don't need an IDE, but when I tried to fire up your program I had some trouble (as can be seen in the thread I started back then). Whether you run the program from the command line or from an IDE, you would in both cases have to configure the environment correctly. I seem to remember that a pivotal point is the CLASSPATH variable, which you set to locate all the components of your program. The advantage of using an eclipse workspace is, that the entire configuration is stored in the workspace as well, so using eclipse the program should run out of the box, once you switched to the workspace. I also remember that at one point I had to rename one of the class import statements and I actually don't understand why but again with the correct configuration that problem might be avoided. Is there perhaps a configuration file in your program I did not notice? In that case running the program would probably be straight forward.
Anyway, do you intend to resume working on your program? With mine I have added a fairly large module implementing the analytic formulae of naca 6763 and 7067 because I was time and again not able to see why the stability derivatives I had calculated numerically were far from the measured values. ( I can now even analyze tandem helicopters, but do not intend to build a tandem autogyro...;-) Currently I am implementing the control derivatives which will allow me to use a step function and compare the results to e.g. curves in old reports that were generated with analog computers. That brings me to a puzzle I have not been able to solve so far: the values for the Puma longitudinal control derivatives are given by Padfield as X_B1= -9.5 Z_B1=40.5 M_B1=6.52 while in other reports they are smaller by about two orders of magnitude. Is it possible, that in the reports with the smaller values these are given in percent, so that they would be smaller by 1/100th?
Well, I do hope you will find the time to resume working on your program since it was very helpful that I was able to compare my results with the ones you had obtained.
Happy Simming!
Juergen
PS: this year my wife and I spent a week cycling along the Loir during our holiday and visiting some châteaus. We passed by Chambord but did not enter, it is so huge that you might get lost but we did see Chenonceau and the Château d'Ussé, both very lovely indeed. After that we spent five days at Pornic, which is still a stronghold of the French, not many foreigners there.