In a rocket with a central composite motor and four black powder motors, what will occur regarding the ignition sequence?

The correct ignition sequence involves the black powder motors starting first, followed by the ignition of the central composite motor. This approach is typically designed for optimal thrust control and stability.

The black powder motors serve as initial thrust sources, providing a rapid ignition and a burst of power to lift the rocket off the ground. This effectively stabilizes the vehicle during the critical early moments of flight. Once the rocket has gained sufficient altitude and speed, the central composite motor ignites to continue propelling the rocket with a sustained and more controlled burn.

This sequential ignition helps to manage the thrust profile during launch, allowing for a smoother ascent and reducing the risk of instability that might occur if all motors ignited simultaneously. Additionally, the central composite motor, which often has a longer burn time and more complex fuel composition, benefits from being the second stage in the ignition sequence to ensure that the rocket is already stabilized by the time it begins to burn.