Understood. I didn't mean to imply that I thought you were (and don't know what I wrote that may have seemed that way) but sorry if I offered any offense.Thanks. I am not making a profit off of this. This is for you so the more you, as a group, help, the better the site will be.
Incidentally, conversion for mph to fps is exactly 22/15.Crosswind velocity mph*(5280 ft/mi)*(1 hr/3600s) = Crosswind velocity FPS
So a body tube reference?Not a calculator but some tables that might be useful
Body tube sizes
Estes engine data
Hi, Chuck. I have a list of saved web sites with a lot of different rocketry related calculators. If you want them as a reference point for a (fairly) comprehensive list of calculators that are out there in the ether, let me know.
Look for "parachute size calculator. It does exactly what your looking for. Besides flat chutes you can pick hemispherical and x form.Parachute descent speed calculator for flat parachutes (parasheets?)
Enter weight and target descent speed, give parachute size
Enter weight and parachute size, give descent speed