*Handbook*for almost my entire rocket building career, I’ve always had a copy of the Barrowman equations at my disposal. I’ve wanted to learn how to do them for the longest time, but I started at an age when the math was beyond me and I still don’t believe my skills are up to doing it independently. I never completed any math class past Algebra 1 (8th grade in California at the time) and I think my mathematical know-how has deteriorated noticeably since then.

There are just so many placeholder variables, terms, constants, and operations that my brain just refuses to make any sense of them or figure out where to get started. I’ve been getting by through sticking with kit builds, making best guesses regarding modifications to those designs, and occasionally checking stability in OpenRocket, but I feel like I’m cheating myself by not gaining this deeper understanding.

What I’m looking for is a resource that can:

A.). Walk me through a few practice calculations with a simple rocket like an Estes Alpha or similar, just showing me where to get started and what steps to follow. The equations apparently support body tube transitions and multi-staging but I think that’s a bit ambitious for my first attempt.

B.). Explain in a

*simple*way where the equations come from and how they account for a given rocket’s attributes, linking the abstract and mathematical with the concrete and physical. In my experience, the ability to plug and chug is distinct from actually understanding what I’m doing.