AboutJames Bell Expertise I am a member of Tripoli Rocketry Association, and am certified to fly hi power rockets. I can answer questions anyone may have about design, materials selection, stability calculations, motor selection, altitude and performance predictions, and parachute and recovery options.
Experience I make my rockets from existing kits or parts readily made through commercial channels. I do NOT make my own motor propellants (they are challenging enough even for the companies that do this for a living), and I do not advocate making rockets using "typical household item" such as paper towel rolls.
It is an altitude prediction program. Input the diameter of the rocket, the loaded weight and motor, and it will give you a good idea of its performance. You can play with different weights and motor combinations to see how that affects performance. I've had a lot of fun working different combinations to maximize performance.
