Difference Between Ramjet and Scramjet
Ramjet vs Scramjet
Supersonic and Hypersonic flight are dreams of aeronautical engineers, where flying as many times the speed of sound is a technically difficult endeavor. Even though supersonic is a realized dream the cost makes it difficult to be used financially.
Ramjet and Scramjets are engines using its own speed to compress air and propel the engine. The ramjet engine technology practically applies in many cases ranging from missiles, supersonic aircraft to artillery rounds, while the scramjet engines are still highly experimental.