Numerical Analysis for Water-Exit Trajectory of Submarine-launched UUV

Wang, Yonghu; Lin, Tianlong; Jiang, Hao

doi:10.2991/mmsa-18.2018.62

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides them, there are some important works which focus on modeling and simulation studies for water-exit motion of some vehicles operationally and physically similar to missiles. In these works, the dynamic model for water-exit of slender vehicles [23], [24], a morphing unmanned submersible aerial vehicle [25], a cylinder vehicle [26], submarine-launched vehicles [27], [28], are developed and motion simulations are performed.…”

Section: Introductionmentioning

confidence: 99%

Energy-Optimal Control of a Submarine-Launched Cruise Missile

Köklücan,

Leblebicioğlu

2020

Preprint

View full text Add to dashboard Cite

A typical mission profile of submarine-launched cruise missiles begins with the launch phase which covers the motion of the missile from the launch to the water-exit and continues with the boost phase which lasts from the water-exit to the beginning of the cruise phase. In order to achieve the desired range of the launch and boost phases, efficient utilization of available energy which carries the missile to the beginning of the cruise phase is necessary. For this purpose, this study presents a new approach for energy-optimal control of the underwater and air motion of a submarine-launched cruise missile. In this approach, the aforementioned problem is modeled and solved as a minimum-effort optimal control problem. Then, the effects of initial and final conditions on energy need are investigated, and the optimal conditions that result with the minimum energy need are determined. Prior to the guidance and control design steps, six degrees of freedom (6 DOF) motion equations are derived and the hydrodynamic and aerodynamic parameters are retrieved. The nonlinear 6 DOF motion model is simplified and linearized before minimum-effort optimal control design part. Results of the designed guidance and control strategies are presented through the nonlinear 6 DOF simulations. Finally, some comments are made and future studies are mentioned based on theoretical and simulation studies.

show abstract

Section: Introductionmentioning

confidence: 99%

Energy-Optimal Control of a Submarine-Launched Cruise Missile

Köklücan,

Leblebicioğlu

2020

Preprint

View full text Add to dashboard Cite

show abstract

Coupling Dynamics Study on Multi-Body Separation Process of Underwater Vehicles

Chen,

Han,

et al. 2024

Drones

View full text Add to dashboard Cite

Based on the Newton-Euler method, a coupling rigid-body dynamics model of a Trans-Medium Vehicle (TMV) separating from an Unmanned Underwater Vehicle (UUV) has been established. The modeling is based on the “holistic method” and “Kane” ideas respectively, so that most of the equations can be derived without considering the internal forces between the two bodies. The separation propulsion force, which is an internal force, only appears in the relative glide dynamics equation of the TMV along the axis of the separation tube that is installed on the UUV. This greatly reduces the workload of modeling and derivation. The UUV works entirely underwater, while the hydrodynamic shape of the TMV changes continuously during the process of the TMV separating from the UUV. Therefore, accurate hydrodynamic calculations for the UUV and TMV are the basis of numerical resolution for the two rigid bodies’ coupling dynamics model in water. A large number of numerical simulations was conducted using CFD methods to investigate the hydrodynamic performance of the UUV and TMV under various conditions. These simulations aim to establish a hydrodynamic database, and accurate hydrodynamic models were developed through fitting methods and online interpolation. In the process of solving the coupling dynamics of two bodies, the hydrodynamic model is used to calculate the hydrodynamic force experienced by the UUV and TMV. This balances the accuracy and efficiency of a numerical simulation. Finally, numerous simulations and comparative analyses were conducted under various operational conditions and separation parameters. The simulation results indicate that the impact of TMV separation on the motion state of the UUV becomes more prominent with smaller UUV to TMV mass ratios or deeper TMV separation depths. This effect can further influence the stability control of the UUV. The coupling rigid body dynamics analysis method established in this paper provides a fast and effective prediction method for use during the scheme design and separation safety evaluation phases of creating UUV-TMV systems.

show abstract

Numerical Analysis for Water-Exit Trajectory of Submarine-launched UUV

Cited by 2 publications

References 0 publications

Energy-Optimal Control of a Submarine-Launched Cruise Missile

Energy-Optimal Control of a Submarine-Launched Cruise Missile

Coupling Dynamics Study on Multi-Body Separation Process of Underwater Vehicles

Contact Info

Product

Resources

About