In some motors, titanium sponge is used to cause sparks in the exhaust. Which option describes this material?

In some motors, titanium sponge is used to cause sparks in the exhaust. Which option describes this material?

• A. A modifier to increase thrust
• B. An ingredient used in some rocket motors that causes sparks in the exhaust
• C. A filler to reduce weight
• D. A coating to reduce heat

Answer: (B)

Spark effects in some rocket motors come from including a metal additive that burns in the exhaust. Titanium sponge burns in the oxidizer to produce small, glowing particles, which create visible sparks in the plume. That’s why this material is described as an ingredient used in some rocket motors that causes sparks in the exhaust. It isn’t primarily used to boost thrust, act as a weight filler, or serve as a heat-reducing coating.

Spark effects in some rocket motors come from including a metal additive that burns in the exhaust. Titanium sponge burns in the oxidizer to produce small, glowing particles, which create visible sparks in the plume. That’s why this material is described as an ingredient used in some rocket motors that causes sparks in the exhaust. It isn’t primarily used to boost thrust, act as a weight filler, or serve as a heat-reducing coating.