Rocket Trajectory: Why Do Rockets Curve Instead Of Going Straight Up?

Rockets follow a curved path rather than a straight line because their main objective is to enter Earth's orbit using as little fuel as possible. To get into orbit, a rocket must tilt onto its side and gradually increase the tilt until it achieves an elliptical orbit around Earth. This technique, called a gravity turn or a zero-lift turn, allows the rocket to maintain a low or zero angle of attack during the early stages of ascent and use Earth's gravity, rather than its own fuel, to change its direction. By following a curved path, the rocket can save fuel and accelerate horizontally to achieve the desired speed and enter the orbit easily.