Climb, cruise and descent aerodynamical equations are perfectly sovable; starting from them and FS jet aircarft model data (with the exception of some turbine flags modifiers, e.g. 1523 that preclude by now accurately calculating engine thrust), all relevant parameters can be calculated even if it needs some configuration/airfile data reading and sophisticated numerical analysis techniques. For an example see my AJPC v 1.30 application (http://www.aero.sors.fr/afsd.html)

Climb, cruise and descent aerodynamical equations are perfectly sovable; starting from them and FS jet aircarft model data (with the exception of some turbine flags modifiers, e.g. 1523 that preclude by now accurately calculating engine thrust), all relevant parameters can be calculated even if it needs some configuration/airfile data reading and sophisticated numerical analysis techniques. For an example see my AJPC v 1.30 application (http://www.aero.sors.fr/afsd.html)

AJPC gives Error Message 339 relating to MSFLXGRD.OCX.

It is probably because you didn't use the AJPC_setup. exe that copies this ocx at the proper place (system directory)..If you prefer not using the install package be sure the MSFLXGRD.ocx is in the same directory as the AJPC.exe. I expect MSFLXGRD.OCX can be downloaded somewhere from the web (latest version is 6.1.97.82). BTW I will include it in the no install rar package.

It is probably because you didn't use the AJPC_setup. exe that copies this ocx at the proper place (system directory)..If you prefer not using the install package be sure the MSFLXGRD.ocx is in the same directory as the AJPC.exe. I expect MSFLXGRD.OCX can be downloaded somewhere from the web (latest version is 6.1.97.82). BTW I will include it in the no install rar package.

Wrong - it's actually because you didn't include the MSFLXGRD.OCX redistributable with your installer. Also It couldn't be copied because that file's not on my PC.

yep..correct..it was included but with an incorrect Inno setup flag so file was not properly copied in the sys directory. Curiously no error message on Windows 7. Install package has been updated. Thanks