Stability Characteristics and Control Technology of Torpedo-Parachute System

Stability Characteristics and Control Technology of Torpedo-Parachute System

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The safety of a rocket-assisted torpedo entering water becomes more sensitive to the water-entry angle as the water-entry speed of the torpedo increases.Conical pendulum motion is likely to occur during the descent of the torpedo-parachute system.The pendulum movement causes the torpedo to have an excessively large angle of attack when it enters the yale law school colors water, resulting in a large impact load that damages the torpedo.To prevent structural damage to the torpedo as it enters the water, it is necessary to reduce the angle of attack before the torpedo enters the water.

In this study, the multi-body motion simulation model of the torpedo system and the attitude-control strategy based on pulse attitude control engine are combined to analyze the attitude-control technology of the torpedo system.Simulation results indicated that when the frequency of the conical pendulum motion of the parachute was close to that of the torpedo, the torpedo had obvious conical pendulum motion, and the influence of the parachute on the torpedo could be significantly reduced by introducing the attitude-control process to change the conical pendulum frequency of the torpedo.Thus, under certain galaxy harmony nc conditions, attitude control of the torpedo with the parachute can achieve feasible results.