Underwater submersible space motion emulation method based on hydrodynamic coefficient susceptibility

A technology of hydrodynamic coefficient and space movement, applied in the field of simulation, can solve problems such as small coupled hydrodynamic coefficient, difficulty in accurate value of hydrodynamic coefficient, etc.

Inactive Publication Date: 2009-06-17
HARBIN ENG UNIV
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Problems solved by technology

Currently generally accepted are Gertler's "Standard Equations of Motion for Submarine Simulation Research" published by the U.S. Taylor Naval Ship Research and Development Center (DTNSRDC) in 1967 and the revised standard equation of motion for submarines published in 1979. It is difficult to obtain the exact values ​​of all the hydrodynamic coefficients in the equation, especially the values ​​of some coupling hydrodynamic coefficients are very small, and it is difficult to measure them experimentally

Method used

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  • Underwater submersible space motion emulation method based on hydrodynamic coefficient susceptibility
  • Underwater submersible space motion emulation method based on hydrodynamic coefficient susceptibility
  • Underwater submersible space motion emulation method based on hydrodynamic coefficient susceptibility

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specific Embodiment approach

[0025] 1. Determine the maneuverability simulation test and its maneuverability parameters to be used in the simulation.

[0026] Three commonly used maneuverability tests are selected in this method: steady rotation test on the horizontal plane, trapezoidal rudder test on the vertical plane and Z-shaped rudder test on the horizontal plane. The maneuverability parameters are selected as follows:

[0027] (1) Steady rotation test on horizontal plane

[0028] Fixed length rotary diameter D s , tactical diameter D T , longitudinal distance A d , positive transverse distance T r and the period of rotation T.

[0029] (2) Vertical trapezoidal rudder test

[0030] Execution time, beyond trim angle θ ov and degree ζ ov .

[0031] (3) Horizontal plane Z-shaped rudder test

[0032] Initial transfer period t a , beyond time t ov , beyond the heading angle ψ ov and period T.

[0033] 2. Carry out the three tests in step 1 through the standard motion equation of the submarine...

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Abstract

The invention provides a submersible vehicle spatial motion simulation method based on hydrodynamic coefficient sensitivity, which adopts SJ (RJ-RJ*) / RJ* as the hydrodynamic coefficient sensitivity index; sets one hydrodynamic coefficient as zero, and holds other hydrodynamic coefficients, to obtain a variable submarine spatial motion model, processes same driving test on the variable model and an original motion model, to obtain two groups of maneuverability parameters, calculates one group of sensitivity indexes of the hydrodynamic coefficient, and processes same operation on each hydrodynamic coefficient; selects an acceptable error reference value A as a simplified standard to simplify a submersible vehicle spatial motion equation, and uses the submersible vehicle spatial motion equation to simulate submersible vehicle spatial motion. The inventive simplified simulation method is based on general simulation test, and is simplified according to sensitivity indexes, while the simplification is suitable for object simulation tests.

Description

(1) Technical field [0001] The invention relates to a simulation method, in particular to a simplified simulation method for submarine space motion. (2) Background technology [0002] The submarine motion simulation model is a multi-variable differential equation established based on dynamics theory, fluid mechanics theory and submarine maneuverability theory. The Taylor series of rotation and rudder speed and the rotational speed of the propeller, according to experience, for the maneuvering situations that may be encountered in general, retaining the Taylor expansion to the third order is sufficient to meet the engineering requirements, and according to people's habits and the ship model test used Due to the different devices and the convenience of calculation, only the second-order coefficients are often used. Currently generally accepted are Gertler's "Standard Equations of Motion for Submarine Simulation Research" published by the U.S. Taylor Naval Ship Research and De...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 吴鹏卢志忠朱怡张晶
Owner HARBIN ENG UNIV
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