When I search for 'most powerful rocket engine' on Google, I found the answer is the F-1 engine, used on the Saturn V. It generates 6,770 kN of thrust.
However, in my opinion, the most powerful rocket engine is Space Shuttle Solid Rocket Boosters. They generates 12,000 kN of thrust.

Please view my online educational website Pilot Astronaut Flight Academy - PAFA https://pafa.thinkific.com/. It is designed to teach students the fundamentals of aviation and astronautics. I would like to get some feed back on how to improve the course, some are much more developed then others. Thanks for taking the time to look it over.

My thoughts on Disney:
Now that we’re back from Spring Break and a long stay at the House of the Mouse I thought I’d collected my thoughts enough to put them down in one place in a (hopefully) coherent fashion. Disney can be overwhelming, there’s a lot of information in many different places, between what friends, neighbors and various other blogs say is a “must do” and finding out what actually works for you can be vastly different. This is just the view of a regular dude....

Any one working on a new updated default ISS ?

An interesting course about hypersonic flight I found by accident.

From engines to aerodynamics.

Course's homepage here.

Youtube videos here.