What are the fuel additives in rocket engines?

Fuel additives in rocket engines are substances added to propellants to enhance performance, stability, and efficiency. Common additives include stabilizers to prevent decomposition, oxidizers to support combustion, and agents that reduce freezing points or improve combustion characteristics. Some formulations also incorporate additives to minimize corrosiveness or reduce the formation of harmful byproducts. These additives help optimize engine performance and ensure safe and reliable operation during launch and flight.