What is the rate of descent for the M485A2 illumination rounds?

The rate of descent for the M485A2 illumination rounds is specifically set at 5 meters per second. This rate is critical in artillery operations, especially for illumination rounds, as it determines how quickly the round will descend after deployment from the launching system. Such a controlled descent allows for effective illumination of the target area while minimizing the risk of unintended detonation or dispersion. Accurate knowledge of this descent rate enables artillery crews to adjust their firing solutions and better predict the behavior of the round upon deployment, ensuring effective light coverage and safety during operations.