Question

The concept of erosive burning in solid rocket propellant operation pertains to

• A. erosion of propellant grain due to ageing
• B. decreased burning rate of propellant grain due to melting of propellant
• C. increased burning rate of propellant grain due to high velocity cross flow gases
• D. increased burning rate of propellant grain due to rocket motion

Hint:

In solid rocket design, understanding and mitigating erosive burning is critical to ensuring predictable motor performance and safety.

Answer 1

The Correct Option is C

Step 1: Understanding Erosive Burning.
Erosive burning in solid rocket propellants occurs when the gas flow rates inside the motor are high enough to erode the propellant at an increased rate. This is particularly significant in larger motors or during high-pressure operation.
Step 2: Impact on Burning Rate.
The erosive effect leads to an increased surface area being exposed, which in turn increases the burning rate of the propellant beyond what is predicted by standard burning rate laws.