Define the rocket’s purpose and requirements
Select the rocket type and size
Design the airframe
Choose the propulsion system
Design the fuel and oxidizer system
Design the guidance and control system
Design the structural and thermal protection
Model the rocket in CAD
Run simulations and analyses
Build prototypes and test components
Integrate all subsystems
Perform ground tests
Review safety and regulatory compliance
Launch and evaluate performance
Refine the design based on test results