Ramjet engine, also known as a scramjet engine, is an advanced propulsion system used in aviation and aerospace engineering. These engines rely on high speed airflow through the combustion chamber for propulsion, making them ideal for hypersonic flights. Some common synonyms for "ramjet engine" include supersonic combustion ramjet (scramjet), air-breathing rocket engine, and hypersonic scramjet engine. These alternative names are used interchangeably, but they refer to the same type of engine. The unique design and capabilities of a ramjet engine make it a potential solution for future hypersonic flights, including supersonic commercial travel, space exploration, and military applications.