Gravity Turn

Lore & Background

This technique became a rite of passage for every new Kerbal astronaut. It represents the moment a pilot stops fighting the planet and starts dancing with it. The successful execution of a gravity turn is often cited in flight logs as the defining characteristic of a professional mission, distinguishing amateur rockets that crash or run out of fuel from those that achieve stable orbit. It is the silent partner in every great ascent, working alongside the engines to sculpt the trajectory.

Reader's Guide

The Gravity Turn relies on the interplay between thrust vectoring and gravitational acceleration. In the game's physics engine, a rocket must achieve significant horizontal velocity to maintain orbit; flying straight up only gains altitude without orbital speed. To execute this, pilots launch vertically until atmospheric drag decreases significantly, usually around 10 kilometers or when reaching maximum dynamic pressure (Max Q). At this point, they begin a slow pitch-over maneuver, typically aiming for the horizon.

As the rocket tilts, gravity acts perpendicular to the flight path, curving the trajectory without requiring constant engine input to steer. This method minimizes gravity losses and aerodynamic drag compared to a vertical ascent followed by a sharp turn. If the pilot tilts too early, atmospheric drag may destroy the vessel or prevent orbit; tilt too late, and fuel is wasted fighting gravity directly. The simulation rewards smooth, gradual adjustments that align with the planet's curvature.