The Saturn V's Rocketdyne J-2 engines had to push more than 300,000 pounds of propellant and gear, along with the Lunar and Service Modules plus the Apollo command crew. To achieve this ...

a toroidal aerospike concept intended as an improvement over the Rocketdyne J-2 engine for the Saturn V. Although promising in tests, the J-2T was never selected for operational use due to the ...

See some impressive images of the Saturn S-4B Battleship Test shown in ... shows just after the ignition of the 200,000 lb. thrust J-2 engine, flame, and steam can be seen beginning to roll ...