At what point must a rocket's stability be determined?

A rocket's stability must be determined when it is prepared for flight because this is a critical phase where the rocket is inspected, tested, and finalized before launch. Assessing stability prior to flight ensures that the design, payload, and other factors align properly for a successful launch and safe trajectory. This assessment includes evaluating factors such as the rocket's center of gravity, aerodynamic stability, and overall flight dynamics, which are essential for predicting how the rocket will behave once it is in motion.

Determining stability at this stage allows for necessary adjustments or modifications to be made, enhancing safety and effectiveness. Taking this step during the preparation phase helps identify any potential issues early on, allowing for troubleshooting and ensuring that the rocket is not only ready for takeoff but also capable of achieving its mission objectives effectively.