Rocket Designer
Stability: 1.5 Calibers
Nose Cone
Body Tube
Fins (Trapezoidal)
Recovery Systems
Flight Simulation
Idle
Flight Telemetry & Presets
Apogee (Max Alt)
-- m
Max Velocity
-- m/s
Max Acceleration
-- G
Flight Time
-- s
Burnout Altitude
-- m
Wind Drift / Error
-- m
Rocket Flight Physics
A rocket's stability is governed by the relative positions of its **Center of Gravity (CG)** and **Center of Pressure (CP)**. For stable flight, the CP must be *behind* the CG. If the CP drifts forward of the CG, the aerodynamic forces will rotate the rocket around its center of mass, causing it to tumble. Barrowman's Equations calculate this CP by summing the normal force slopes of the nose cone and fins based on their surface areas and geometry. High winds cause stable rockets to *weathercock* (rotate into the wind), bending their trajectory horizontally.