J-2 Engine: Versatile SidekickEngines like this J-2 powered stages 2 and 3 of the Saturn V.STAGE 2A cluster of five J-2 engines took over at an altitude of about 38 miles (61 km). The five J-2 engines boosted the rocket to 114.5 miles (184.3 km), speeding from 6,000 miles (9,700 km) to 15,300 miles (24,600 km) per hour. STAGE 3Unlike other liquid-fueled engines used in the Apollo program, J-2 engines could be restarted. This special capability was used on the Saturn V third stage. A single J-2 engine boosted the spacecraft into low-Earth orbit. After performance checks, the J-2 was reignited for translunar injection, a 6.5-minute burn which accelerated the vehicle on a course for the Moon. J-2 engines were used on the Saturn IB and Saturn V rockets for launches from the late 1960s through the mid-1970s. Saturn IB rockets were used for Apollo spacecraft tests, the three missions of Skylab, and the Apollo-Soyuz Test Project. Height: 11.1 feet (3.4 m) Diameter: 6.75 feet (2.05 m) Propellants: liquid hydrogen and liquid oxygenThrust: 230,000 pounds-force (1,023 kN)
Comments 0 comments