thrust-to-weight ratio

Thrust-to-weight ratio compares the engine's pushing power (thrust) of an aircraft or rocket to its overall weight. It indicates how effectively the vehicle can accelerate or climb. A ratio above 1 means the engine produces enough force to lift and accelerate the vehicle upward or forward, which is essential for takeoff and maneuvering. For example, a thrust-to-weight ratio of 1.2 suggests the engine generates 20% more thrust than the vehicle’s weight, enabling efficient acceleration and climb. Conversely, a lower ratio means more effort is needed to lift or move the vehicle.