What must fuel jettison systems do to maintain lateral stability?

The requirement for fuel jettison systems to maintain lateral stability is primarily focused on ensuring that fuel is released in a manner that does not cause the aircraft to become unbalanced during flight. Implementing two independent systems allows for precise control over the amount of fuel being jettisoned from each side of the aircraft.

By having two independent systems, pilots can manage the fuel balancing during the jettison process, ensuring that fuel is discharged evenly or in a controlled manner, depending on the situation. This control is crucial, especially during critical phases of flight such as descent and approach, where lateral stability is vital for safe handling and maneuvering of the aircraft.

This approach helps prevent situations where one wing may be heavier than the other due to unequal fuel loads, which could lead to adverse aerodynamic effects and difficulties in controlling the aircraft. Therefore, using two independent systems is essential for maintaining the necessary lateral stability while allowing for safe and effective fuel management.