Five by Five Development

This page contains links to utilities that I've written over the years. Rather than let them rot on my computer I've posted them here, free for you to use. If you find them useful, or you can think of something that would make them better, let me know.

Protocol generation tool for Windows and Mac OSX and Linux

This is a program for automatically generating C source code for packet communications. The protocol is specified in an xml file and the software generates well commented and readable source code as well as html formatted documentation for the protocol.

Detailed documentation and source code of the ProtoGen software can be found here.

Propeller analysis tool for Windows and Mac OSX

This is a program (Windows or OSX) for doing low speed propeller analysis. The propeller is specified according to blade section properties (lift and drag as a function angle of attack and Reynolds number), and blade shape and twist. McCormick's blade element momentum method is applied to calculate the propeller characteristics at one or multiple advance ratios (J).

Android Unit Converter

This is a native android app (minimum SDK: 15, i.e. Android 4.X) for doing unit conversions. This version is 1.2.2. You can find newer versions on the google play store. There are many similar apps, but this one is particularly useful for my kind of work:

Airfoil plotting tool

This is a Win32 program (should run on XP, Vista, 7, and 8) for plotting airfoils. I originally wrote it to make templates for cutting foam core wings. As such it can apply wing skin thickness, leading edge cap, and template incidence to the plot. The program can also be used to increase or decrease the camber and thickness of the airfoil. Airfoils are specified according to the Selig .dat format. An example airfoil is included and more can be easily downloaded from the UIUC web site.

Old propeller analsysis tool

This is a Win32 program (should run on XP, Vista, 7, and 8) for doing low speed propeller analysis. The propeller is specified accoridng to blade section properties (Coefficient of lift and drag versus angle of attack and Reynolds number), and blade shape and twist. The propeller specification is done through input text files, and examples are provided. McCormick's momentum method is applied to a series of blade elements to calculate the propeller performance (Coefficient of thrust and power) at one or multiple advance ratios (J). The tool produces a nice plot of the propeller performance and can save the resulting data to a text file for incorporation into other simulation software.