Model rocketry calculators

Enter launch-ready rocket and motor data to estimate how high the rocket will go above the pad. The result separates powered flight from coast and compares the estimate with an otherwise identical no-drag flight.

Enter two stations’ synchronized azimuth and elevation readings to estimate altitude with the vertical-midpoint method. The result also shows each independent altitude, closure error, and the ground point beneath the rocket.

Enter the exposed fin dimensions, material shear modulus, launch-site conditions, and expected top speed to screen a model rocket fin for flutter. The result compares predicted flutter speed with your safety-factor target and solves backward for a minimum fin thickness.

Choose a nose-cone profile and enter the dimensions to generate coordinate stations plus geometry estimates for volume, surface area, shell mass, and center of mass. The output is meant for layout, CAD setup, and material planning before you verify the final part.

Enter the rocket mass, target landing speed, launch-site air conditions, and parachute details. The calculator solves for the needed round-canopy diameter, rounds up to a common size, and shows the likely descent speed, energy, and drift.

Enter the nose, body, fin, and measured launch-ready CG dimensions to estimate center of pressure and static margin. The calculator also works backward to suggest a fin span or nose ballast for a target margin.