Question

The interval from 10% maximum initial pressure (or thrust) to web burnout, with web burnout usually taken as the aft tangent-bisector point on the pressure–time trace is called as

• A. burning rate
• B. ignition time
• C. action time
• D. burning time

Hint:

Web burnout marks the end of useful combustion, and burning time is vital for performance prediction.

Answer 1

The Correct Option is D

The question involves understanding a term used in the performance analysis of rocket motors. Let's explore the definition of each term to identify the correct answer:

• Burning Rate: It is the rate at which a propellant or fuel consumes. It is generally measured in units of length over time (e.g., inches/sec).
• Ignition Time: This is the time it takes for a propellant to start burning once the ignition source is applied.
• Action Time: This usually refers to the entire time span during which thrust or force is exerted by the motor.
• Burning Time: This is the time interval from when the pressure first reaches 10% of its maximum value to when the web burnout occurs, defined as the aft tangent-bisector point on the pressure-time trace.

Given the definition of burning time, which aligns with the description of the interval from 10% of the maximum initial pressure to web burnout, the correct answer is:

Burning Time