Ok, so I feel really stupid asking this question, but I guess you've gotta start somewhere to reach somewhere, so here goes nothing: I have this report to write and the title of the report has got me a bit confused. The professor's asked me to "write and present a technical report abut high speed jets as used in rocket engines". Now, I'm a total novice in the area of jet/rocket propulsion. Whilst doing some research on the internet, I learnt that jet engines are different from rocket engines, in terms of where they get their oxidizer from. This is the part that's got me confused, if jet engines are different from rocket engines, then what does the professor mean when he asked about "high speed jets as used in rocket engines"? Or have I totally misunderstood the professor, and he is simply asking me to write about rocket engines, how they work, etc.? Your help would be appreciated. Bye.