Photo Credit: NASA
Leaving low Earth orbitThe rocket will reach its maximum dynamic pressure — the moment at which the atmosphere exerts its maximum force on the rocket — just 90 seconds into the mission. It will jettison its solid propellant boosters after 2 minutes, then let go of its service module fairings at 3 minutes to lighten the load and make sure Orion's solar arrays are exposed. Then, it will throw away the launch abort system at 3 minutes and 40 seconds after launch.
The engines will shut down when the rocket reaches the right speed, allowing the core stage to separate. Then, an interim propulsion stage powered by fuel cooled to very low temperatures, along with the Orion spacecraft, will orbit Earth and get ready for moon operations. Orion will deploy its solar arrays, and the propulsion stage will change the spacecraft's orbit, raising the point at which it'd make its closest approach to Earth (called perigee).
When that is finished, Orion will receive the all-clear for its 20-minute-long trans-lunar injection (TLI) burn — the engine fire that will bring it coasting to the moon.
Linkback:
https://tubagbohol.mikeligalig.com/index.php?topic=87945.0