- Additional or balance thrust required to achieve exhaust velocity to break escape velocity of gravity of earth
- Type of fuel, its burning mechanism, rate of combustion, generation of heat, its transfer and exit through nozzle to generate effective exhaust velocity.
- Dimensioning of solid rocket booster, its strapping and dis-joining mechanism.
- Calculations of deflection and shear stresses and bending moments in tube / shell as a result of thermal, mechanical, acoustic and atmospheric (air friction) stresses.
- Material selection and fabrication.