The Delta IV RS-68 main engine is the world’s most powerful hydrogen/oxygen engine. At 100 percent power level, the engine produces 3.3 meganewtons of thrust. The turbopumps can pump more than 815 kilograms per second of propellant into the combustion chamber when operating at full power. The engine can also be throttled to 57 percent power to meet mission trajectory needs. Three RS-68 engines will power the Delta IV heavy launch vehicle
This makes me feel things. @carlos_adama @outlawpoet
The big engines are a full-body experience when they fire. I spent some time out on the proving ground Thiokol has in Utah, and when they light, you can feel it in your bones before you hear it. Ground-wave propagation.
SpaceX is making the Merlin engines out here in California, I have a standing invite for a tour I really need to take. Xcor out in Mojave makes smaller engines, but there’s the possibility of actually riding a rocket plane which would be almost as religious experience, I would think.