Roll is a rotational movement around the longitudinal axis of a spacecraft, which runs from the nose to the tail. This motion alters the orientation of the spacecraft in relation to its direction of travel, affecting its attitude control and stability. Understanding roll is crucial for spacecraft navigation, as it interacts with concepts like reference frames and rotation matrices, small-angle approximations, and complex behaviors like nutation and precession.
congrats on reading the definition of Roll. now let's actually learn it.