Volume Calculator - downloadable Microsoft Excel workbook
The coolest tool you never knew you needed.
Calculates the volume of cylinders (body tubes), frustums (transitions and boattails), cones (conical nose cones), and ogives (ogive nose cones).
It will also tell you the volume inside a cylinder with one or more cylinders running through the center (think of it as the amount of dough in a stack of donuts).
Brad compiled this calculator when he wanted to know precisely how much expandable foam was needed to fill a large conical transition.
So he wrote the formulas to determine the volume of the area between the walls of the frustum and the tube that ran through the center.
He later added computations for cylinders and cones to do precisely the same thing. The downloadable version is a workbook with several spreadsheets, so select the tab that provides the calculations you need.
GoMath's Geometry Solutions
Geometry Solutions is a sophisticated calculator that calculates the perimeter, lateral and surface areas, and volume of plane and solid geometric figures.
This calculator is not specifically geared to rocket shapes, but it will calculate the volumes of cones, cylinders, frustums, pyramids, spheres, and many others.
Flight Simulation - downloadable Microsoft Excel spreadsheet
A mathematical model for computing velocity, altitude, delay times, etc. This is not real user friendly or well documented, so use it at your own risk.
This was orignally written by Marc Casanova and adapted by Brad to accomodate two-stage flight (along with a few other bells and whistles).
As of 10/05/01, this link has been updated to a kinder, gentler, much more user-friendly version of this model. You will have to go to www.thrustcurve.com to download the thrust data pertaining to your flight, as well as inputting your other rocket specific data.
(By the way -- unlike the other files above, this one is NOT small -- it's over half a meg. So if your modem speed is really slow, don't say we didn't warn you).
Club Launch Statistics Generator
This model is designed to aid in the writing of club launch reports. Type in the motor used in each flight and the model tallies the total impulse, motor use distributions, equivalent impulse on clusters, impulse distribution curves, charts, graphs, and other cool stuff. Marc Casanova wrote it to assist in the monthly publication of statistics for the Superstition Spacemodeling Society, and if your club publishes monthly flight reports this is an awesome tool. The download is a zipped file and will require WinZip to unpack and Microsoft Excel to use. The .zip file is about 0.5 meg. It comes prepopulated with data from the SSS July 2002 club launch, so just follow the examples shown.