Sometimes called a shroud, it holds equipment, instrumentation, or computers important to the flight of the rocket. The Fins are used to help guide the rocket. They steer the rocket through the air much the same way that fins on a fish steer it through water. Now that you know the parts of a rocket, let's find out what happens when it is launched. All SEP rockets follow the same basic flight profile, or trajectory.
Launch occurs when the rocket is ignited electronically after a proper countdown.
The Boost Phase is when the rocket motor is burning and the rocket is accelerating upward. The Coast Phase occurs after the rocket motor stops burning, but the rocket continues to climb upward. The Drough Parachute is designed to slow the descent of the rocket, yet keep it from drifting off. It deploys just after apogee. The Main Parachute is designed to float the rocket safely back to earth and allow it to land gently on the ground.