What is the primary operational disadvantage of solid rocket motors once their ignition sequence starts?

Answer

They possess a complete lack of in-flight operational control (cannot be throttled, restarted, or shut off).

Once ignited, a solid rocket motor burns based on its internal geometry, meaning there is no mechanism to adjust thrust or terminate the burn early, unlike liquid engines.

What is the primary operational disadvantage of solid rocket motors once their ignition sequence starts?
disadvantagesrocket fuelhazardspropellantcombustion