A ero F oil E ngineering.com

AeroFoil Revision History:

Version 3.2, 10 April 2013

Removed e-mail registration and replaced it with an internet based solution.

Version 3.1, 31 March 2013

SI units added to all the calculations. Now compiled in Visual Basic 2012.

Version 3.0, 27 November 2010

A complete re-write in Visual Basic 2010. Improvements made to the Mean Line Modification and Smoothing routines.

Version 2.2, 3 August 2009

A few minor improvements and the help files now work with Firefox as well as Internet Explorer.

Version 2.1, 24 December 2007

Rulers are now available on all of the graphical displays. A improved method of surface smoothing is now in place. Minor improvements were made to the mean line modification routine. The Help files were converted to html to support Windows Vista (my thoughts on Vista)

Version 2.0, 27 July 2007

Unregistered copies now become AeroFoil Lite if not registered after the 14-day trial period. The program look and feel has been altered to conform more closely to the Microsoft standard. Rulers have been added to several of the graphical displays. Improvements were made to the wing simulation routine; all angles of attack are now referenced to the fuselage Angle Of Attack. Minor improvements were made to the mean line modification routine.

Version 1.3, 10 February 2006

Additional error trapping has been incorporated in the Inverse Design calculations. Calculation of the aerodynamic center has been revised slightly to account for a wider range of highly cambered airfoils. An error trap has been included in the Wing simulation when the configuration is invalid.

Version 1.2, 22 April 2005

At the request of a prospective user, values of surface velocity and boundary layer thickness may be saved in a file and used in other analytical software. Minor changes were made to the on-line help file to help a user create coordinate data files manually.

Version 1.1.01, 27 January 2005

A bug was fixed in the "Smooth" routine. An error was generated in a small set of airfoils when attempting to smooth around the leading edge. An additional warning message and data check has been added to the "import x,y,z data" routine.

Version 1.1, 23 January 2005

A very minor change to the .dxf file import that adds additional flexibility for reading Polyline drawing entities.

Version 1.0, 3 January 2005

Support has been added for an additional .dxf drawing entity, limited edit capability has been added to the airfoil data files through an interactive data grid, and the registration process has been incorporated. Many, many thanks to those of you who helped me in testing the registration and last minute details. I could not have done it without your help.

Beta 3.1, 15 November 2004

The calculations for compressible flow have been vastly improved and an alternate Pressure Coefficient display has been added.

Beta 3.0, 19 September 2004

Seven different types of control surfaces may be modeled. In addition, two different errors were reported to me that I was unable to reproduce. The only common point between them was that they occured in forms that used conditional statements as they were being closed and they were both reported from European users. I can only surmize that this is either caused by a European version of Windows that treats the Form Query_Unload event differently or it is a result of Windows XP Service Pack 2. Beta Version 3.0 has been re-compiled using the latest version of Visual Basic. This should eliminate the problem.

Beta 2.4, 16 April 2004

Airfoil coordinates may be inported in either raw x, y, z coordinates or a limited set of .dxf entity types. This version was the basis for the last course work of my Master's degree in Mechanical/Aerospace Engineering.

Beta 2.3, 10 March 2004

Airfoil files may now be saved in the Drawing Interchange Format (.dxf) where they may be imported into a variety of drafting and design software packages.

Beta 2.2b, 7 March 2004

Minor changes to correct form colors when any color combinations other than Windows Classic Style are used. Placement of the progress bar altered to look better in the Windows XP Style.

Beta 2.2a, 5 March 2004

This version included a context sensitive help file that virtually eliminates the need for user's instructions. It also corrected an error in the wing simulation which may be used to estimate the overall behavior of airfoils in a real-world situation.

Beta 2.2, 7 February 2004