Hello, my name is Rodger Farley and I'm an Aerospace engineer with 28 years at the NASA Goddard Space Flight Center. Over the years I have developed software tools for myself with respect to aircraft and stratospheric ballooncraft design, radio control model aircraft, a book on celestial navigation, and other goodies. I would love to share this work with anyone with a technical bent and who has a thirst for knowledge.

You may use any of my material for free, but you may not sell any of it. If you use any of my material, you use it ENTIRELY at your own risk. Statements like this are necessary in todays litigious society, but I say this to make you think twice before doing anything stupid. Prudent engineering requires that results and conclusions be verified using several methods. So go be prudent...and have fun with these tools.

ALL RIGHTS RESERVED

COMPLETE LIST OF RESOURCES AVAILABLE HERE







My book, "The Armchair Celestial Navigator"







Aircraft Performance software





Aircraft design software, AeroDes7


Vortex Lattice Method (VLM) analysis tool, VLMfarley1







DH-84 Dragon radio control construction notes





DH-84 Dragon rc model construction plans





DH-90 Dragonfly rc model construction plans





Wilga 80 construction rc model plans







Stratosphere Balloon Design presentation





Balloon Thermal Prediction software





Equations for the steady-state temperature of spherical balloons





Pumpkin Balloon Design Guide





Solar Montgolfiere Design Guide





Equations for approximating the rate of ascent for balloons







Satellite finding / observation software





Spacecraft fuel burn software





Orbit design simulation software





Spacecraft Mechanical Design pdf presentation







Model cargo ship design book







Boat shape lofting software using conic sections





Marine engine/propeller performance software







Gyrocopter (autogiro) performance software







Stepper motor 3 phase simulation software





Math model description of the 3-phase simulation





Stepper motor 2 phase simulation software







Ball bearing analysis software

This is a picture of the 1/6 scale de Havilland DH-84 Dragon-2 that I designed for scale radio control. Plans and instructions can be downloaded for free from this site under "Radio Control Aircraft".

Click here to e-mail me any questions or comments.

USER BEWARE!
I do not guarantee or warrant the accuracy or use or results of any of my materials provided here. You, the user, are TOTALLY responsible for validating the results from from my materials, and you the user are TOTALLY responsible for any result that may occur from either the proper use, or the improper use of my materials.
I can in no way shape or form be held liable for any lost profits, savings or any direct or indirect damages to the user or any party from the use or misuse of my materials. Finally, in addition to the above, I assume NO responsibility for any resulting craft or any damages of any kind from such craft that was designed or modified as a result from the use or misuse of these materials. So there.

Home

Celestial Navigation

Aircraft Design

Radio Control Aircraft

Stratospheric Ballooncraft Design

Miscellaneous Stuff