Question

In a solid propellant rocket, the thrust level is primarily controlled by

• A. Injector design
• B. Turbopump speed
• C. Grain geometry and burning surface area
• D. Mixture ratio control

Hint:

For a solid rocket, \[ \boxed{ \text{Grain Geometry} \Longrightarrow \text{Burning Surface Area} \Longrightarrow \text{Mass Flow Rate} \Longrightarrow \text{Thrust}. } \] Different grain shapes (tubular, star, finocyl, etc.) produce different thrust-time profiles.

Answer 1

The Correct Option is C