Ship Roll Decay Tests with Flywheel Stabilization скачать в хорошем качестве

Ship Roll Decay Tests with Flywheel Stabilization

A roll decay test is used to fundamentally understand how much damping a ship has in roll. Roll damping determines how much and for how long a ship will continue to roll back and forth after encountering a wave, with higher damping resulting in less residual roll motion. A flywheel was installed in the MHL's ONR-Tumblehome model and roll decay testing conducting under three conditions: Off, Passive and Active. In the Off condition the flywheel is present but without rotation or precession. The Passive condition has the flywheel rotating with precession uncontrolled (moving freely). The Active condition uses an IMU to read the model's roll angle and precess the flywheel to apply a corrective moment to bring the model back to a zero degree roll angle.