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FarleyFlightAviation & Teacup Navigation

These pages will be discontinued by Sept 2014. Click here to link to the new domain TeacupNavigation.net

Hello, my name is Rodger Farley and I'm an Aerospace engineer with decades of experience 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.


You can e*m*a*i*l me with the below address




Free aircraft design software, and free radio control aircraft plans


My book, "The Armchair Celestial Navigator"
updated book renamed " Celestial Navigation in a Teacup"

Comprehensive Celestial Navigation software "Teacup Navigator"

Vortex Lattice Method (VLM) analysis tool, VLMfarley1

DH-84 Dragon radio control construction notes

DH-84 Dragon rc model construction plans

Wilga 80 construction rc model plans

Model cargo ship design book

Boat shape lofting software using conic sections

Marine engine/propeller performance software

Gyrocopter (autogiro) performance software

DH-84 Dragon "Riama" Electric scale RC


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".


Teacup Navigation

Free celestial navigation book and CN software


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. ALL MATERIAL ON THIS WEB SITE IS FOR EDUCATIONAL PURPOSES ONLY! So there.