Current software constitutes modifications and extensions to XROTOR and DFDC, both by Prof. Mark Drela of MIT and Harold Youngren of Aerocraft Inc. Packages for Unix/Linux, Win32 and Mac OS X are posted under the GPL. The esBlade SolidWorks macro is proprietary.


The ESBLADE Lofting System automates the lofting of blade designs in SolidWorks from loft data generated by ESLOFT in CROTOR or DFDC-ES, thus removing a bottleneck in the design and development of propulsors and turbines. ESBLADE consists of a file format and a SolidWorks macro.


CROTOR v755-ES1 is XROTOR 7.55 with additional features, including:

- Counter-rotation
- Blade lofting
- Multi-axis parametric analysis

Available for download under the GPL.

DFDC v070-ES3

DFDC is a unique Ducted Fan Design Code. This version fixes many bugs in DFDC v0.70 while adding a variety of enhancements. Version ES2 introduced ESLOFT, a unique facility for lofting rotor and stator blades. Version ES3 introduces a blade blockage correction model along with many other enhancements.

Available for download under the GPL.


ESPROP forms part of a unique parametric analysis system for variable pitch and constant speed propellers. Several propellers can be directly compared across a wide range of operating conditions. Both numeric and plot output are supported.

ESPROP and a sample database are available for download under the GPL.

© Copyright 2015 Philip Carter

This white text is to make Internet Explorer center the images on the full span of the browser window. Perhaps Microsoft will address this issue at some time since Netscape does not have this problem and renders pages properly.